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#1176 2021-09-13 07:23:18

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/08/17  Tuesday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/13 Monday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

One day note: According to my Astronomical Themed calendar, Mars and the Sun will be in conjunction (as seen from Earth) on October 7th.
What I am looking forward to seeing is whether the online display by theskylive.com shows the Sun in the vicinity of Mars. Recently we (forum readers) noted the appearance of Mercury as it passed by Mars.  I would expect something similar when the Sun appears in the display, except how the programmers handle an object of that size and optical magnitude is going to be interesting to watch.

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 098.3  Sol Number: 212  Change in degrees is +.4
Previous SL:      097.9  Previous Sol:211

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   246,359,697 km [22.3 km/s] Difference is -095089 <= 3729 km/hour at 9.0 on 09/13 (time:9:00)
Distance: Mars >> Sun per theskylive.com:   246,454,786 km [22.2 km/s] Difference is -088090 <= 3670 km/hour at 7.5 on 09/12 (time:7:30)
Distance: Mars >> Sun per theskylive.com:   246,542,876 km [22.2 km/s] Difference is -088159 <= 3613 km/hour at 7.5 on 09/11 (time:7:30)

Next up: Galaxy closest to path PGC 1184974 RA 11h 57m 59.5s Day 0 11 hours ahead
A pair: TYC 273-548-1 Magnitude 12.05 above and TYC 273-644-1 Magnitude 10.21 below about 10 hours ahead on Day 0 - Day 0 about 10 hours behind
We have on mini-Boomer in the view, and a ** lot ** of galaxies! I counted 36 and probably missed a couple.  UGC 6903 RA 11h 55m 36.4s is broadside!

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,100,123
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 212 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 212 is Tuesday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1177 2021-09-14 08:27:28

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/08/18  Wednesday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/14 Tuesday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 098.7  Sol Number: 213  Change in degrees is +.4
Previous SL:      098.3  Previous Sol:212

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   246,266,912 km [22.3 km/s] Difference is -092785 <= 3787 km/hour at 9.5 on 09/14 (time:9:30)
Distance: Mars >> Sun per theskylive.com:   246,359,697 km [22.3 km/s] Difference is -095089 <= 3729 km/hour at 9.0 on 09/13 (time:9:00)
Distance: Mars >> Sun per theskylive.com:   246,454,786 km [22.2 km/s] Difference is -088090 <= 3670 km/hour at 7.5 on 09/12 (time:7:30)

Next up: We have an asterism amid a cluster of galaxies: TYC 280-472-1 Magnitude 10.29 in path Day 0 about 15 hours ahead
Galaxy closest to path PGC 1184974 RA 11h 57m 59.5s Day 0 11 hours ahead- Day 1 about 11 hours behind
We have one mini-Boomer in the view, and a ** lot ** of galaxies! For record: HIP 58375

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,100,123
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 213 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 213 is Wednesday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1178 2021-09-15 06:24:57

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/08/19  Thursday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/15 Wednesday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 099.2  Sol Number: 214  Change in degrees is +.5
Previous SL:      098.7  Previous Sol:213

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   246,182,368 km [22.3 km/s] Difference is -084544 <= 3843 km/hour at 7.5 on 09/15 (time:7:30)
Distance: Mars >> Sun per theskylive.com:   246,266,912 km [22.3 km/s] Difference is -092785 <= 3787 km/hour at 9.5 on 09/14 (time:9:30)
Distance: Mars >> Sun per theskylive.com:   246,359,697 km [22.3 km/s] Difference is -095089 <= 3729 km/hour at 9.0 on 09/13 (time:9:00)

Next up: HIP 58700 Magnitude 7.81 below path and about 11 hours ahead
TYC 280-472-1 Magnitude 10.29 in path Day 0 about 15 hours ahead - Day 1 right at the 5.5 hour marker behind Mars
We have one mini-Boomer in the view, and a ** lot ** of galaxies! For record: HIP 58700

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,100,123
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 214 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 214 is Thursday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1179 2021-09-16 09:15:54

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/08/20  Friday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/16 Thursday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 099.6  Sol Number: 215  Change in degrees is +.4
Previous SL:      099.2  Previous Sol:214

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   246,086,957 km [22.3 km/s] Difference is -095411 <= 3895 km/hour at 8.0 on 09/16 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   246,182,368 km [22.3 km/s] Difference is -084544 <= 3843 km/hour at 7.5 on 09/15 (time:7:30)
Distance: Mars >> Sun per theskylive.com:   246,266,912 km [22.3 km/s] Difference is -092785 <= 3787 km/hour at 9.5 on 09/14 (time:9:30)

Next up: Star TYC 280-449-1 Magnitude 9.38 Below path Day 0 about 8 hours ahead of Mars
HIP 58700 Magnitude 7.81 below path and about 11 hours ahead - Day 1 near the edge of the view and more than 11 hours past
We have one mini-Boomer in the view, and a ** lot ** of galaxies! For record: HIP 58700

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,100,123
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 215 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 215 is Friday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1180 2021-09-17 05:36:24

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/08/21  Saturday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/17 Friday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 100.1  Sol Number: 216  Change in degrees is +.5
Previous SL:      099.6  Previous Sol:215

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   245,996,065 km [22.3 km/s] Difference is -090892 <= 3952 km/hour at 7.0 on 09/17 (time:7:00)
Distance: Mars >> Sun per theskylive.com:   246,086,957 km [22.3 km/s] Difference is -095411 <= 3895 km/hour at 8.0 on 09/16 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   246,182,368 km [22.3 km/s] Difference is -084544 <= 3843 km/hour at 7.5 on 09/15 (time:7:30)

Next up: A star and galaxy pair: PGC 1155743 RA 12h 07m 51.8s Star TYC 280-321-1 Magnitude 10.63 in path Day 0 about 15 hours ahead
Star TYC 280-449-1 Magnitude 9.38 Below path Day 0 about 8 hours ahead of Mars - Day 1 at edge of view about 11 hours past Mars

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,100,123
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 216 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 216 is Saturday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1181 2021-09-18 06:31:45

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/08/22  Sunday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/18 Saturday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 100.5  Sol Number: 217  Change in degrees is +.4
Previous SL:      100.1  Previous Sol:216

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   245,895,893 km [22.3 km/s] Difference is -100172 <= 4007 km/hour at 8.0 on 09/18 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   245,996,065 km [22.3 km/s] Difference is -090892 <= 3952 km/hour at 7.0 on 09/17 (time:7:00)
Distance: Mars >> Sun per theskylive.com:   246,086,957 km [22.3 km/s] Difference is -095411 <= 3895 km/hour at 8.0 on 09/16 (time:8:00)

Next up: Both pairs are about 16 hours ahead on Day 0
Next up: Pairs of galaxies above and below the path: Below are PGC 38725 and PGC 1146376; Above are PGC 1150318 and PGC 38746
Mars just passed through a quadrangle shaped asterism - it is close to being a square-No Boomers today-plenty of galaxies are in the scene
PGC 1155743 RA 12h 07m 51.8s Star TYC 280-321-1 Magnitude 10.63 in path Day 0 about 15 hours ahead - Day 1 about 8 hours behind

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,100,123
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 217 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 217 is Sunday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1182 2021-09-19 07:54:50

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/08/23  Monday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/19 Sunday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 101.0  Sol Number: 218  Change in degrees is +.5
Previous SL:      100.5  Previous Sol:217

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   245,794,311 km [22.3 km/s] Difference is -101582 <= 4063 km/hour at 9.0 on 09/19 (time:9:00)
Distance: Mars >> Sun per theskylive.com:   245,895,893 km [22.3 km/s] Difference is -100172 <= 4007 km/hour at 8.0 on 09/18 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   245,996,065 km [22.3 km/s] Difference is -090892 <= 3952 km/hour at 7.0 on 09/17 (time:7:00)

Next up: Galaxy PGC 1141197 RA 12h 12 m 33.8s in path Day 0 about 15 hours ahead
Both pairs are about 16 hours ahead on Day 0 - on Day 1 the galaxies are all showing at about 5.5 hours past Mars
Pairs of galaxies above and below the path: Below are PGC 38725 and PGC 1146376; Above are PGC 1150318 and PGC 38746

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,100,123
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 218 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 218 is Monday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1183 2021-09-20 08:05:26

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/08/24  Tuesday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/20 Monday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 101.4  Sol Number: 219  Change in degrees is +.4
Previous SL:      101.0  Previous Sol:218

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   245,699,565 km [22.3 km/s] Difference is -094746 <= 4119 km/hour at 8.0 on 09/20 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   245,794,311 km [22.3 km/s] Difference is -101582 <= 4063 km/hour at 9.0 on 09/19 (time:9:00)
Distance: Mars >> Sun per theskylive.com:   245,895,893 km [22.3 km/s] Difference is -100172 <= 4007 km/hour at 8.0 on 09/18 (time:8:00)

Next up: HIP 58733 Magnitude 8.78 above path Day - about 15 hours ahead.
There are three mini-Boomers on the scene today.  There are more galaxies than I care to count. 
Galaxy PGC 1141197 RA 12h 12 m 33.8s in path Day 0 about 15 hours ahead - Day 1 about 8 hours behind

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,100,123
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 219 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 219 is Tuesday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1184 2021-09-21 07:32:39

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/08/25  Wednesday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/21 Tuesday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 101.9  Sol Number: 220  Change in degrees is +.5
Previous SL:      101.4  Previous Sol:219

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   245,597,280 km [22.3 km/s] Difference is -102285 <= 4175 km/hour at 8.5 on 09/21 (time:8:30)
Distance: Mars >> Sun per theskylive.com:   245,699,565 km [22.3 km/s] Difference is -094746 <= 4119 km/hour at 8.0 on 09/20 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   245,794,311 km [22.3 km/s] Difference is -101582 <= 4063 km/hour at 9.0 on 09/19 (time:9:00)

Next up: Two galaxies just below path: PGC 1127204 RA 12h 17m 32.0s and PGC 1126921 Day 0 about 15 hours ahead
HIP 58733 Magnitude 8.78 above path Day - about 15 hours ahead. - Day 1 about 10 hours behind
There are two mini-Boomers on the scene today.  There are ** way ** more galaxies than I care to count. 

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,100,123
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 220 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 220 is Wednesday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1185 2021-09-22 07:09:05

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/08/26  Thursday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/22 Wednesday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 102.3  Sol Number: 221  Change in degrees is +.4
Previous SL:      101.9  Previous Sol:220

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   245,497,935 km [22.3 km/s] Difference is -099345 <= 4227 km/hour at 8.0 on 09/22 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   245,597,280 km [22.3 km/s] Difference is -102285 <= 4175 km/hour at 8.5 on 09/21 (time:8:30)
Distance: Mars >> Sun per theskylive.com:   245,699,565 km [22.3 km/s] Difference is -094746 <= 4119 km/hour at 8.0 on 09/20 (time:8:00)

Next up: Star TYC 4940-264-1 Magnitude 11.20 below path Day 0 about 11 hours ahead
Next up: Galaxy PGC 1124430 RA 12h 19m 46.6s above path Day 0 about 15 hours ahead
Two galaxies just below path: PGC 1127204 RA 12h 17m 32.0s and PGC 1126921 Day 0 about 15 hours ahead - Day 1 about 5 hours behind
There are ** way ** more galaxies than I care to count.  NGC 4202 is close enough to have a clear shape. Magnitude is given as 14.50.

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,640,041
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 221 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 221 is Thursday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1186 2021-09-23 08:48:33

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/08/27  Friday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/23 Thursday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

One Day note: Today was a Triple Sol Day. These come every 100 Sols (or so).  222 is 1/3 of 666, roughly corresponding to Month 8 of 24.

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 102.8  Sol Number: 222  Change in degrees is +.5
Previous SL:      102.3  Previous Sol:221

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   245,390,811 km [22.3 km/s] Difference is -107124 <= 4285 km/hour at 9.0 on 09/23 (time:9:00)
Distance: Mars >> Sun per theskylive.com:   245,497,935 km [22.3 km/s] Difference is -099345 <= 4227 km/hour at 8.0 on 09/22 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   245,597,280 km [22.3 km/s] Difference is -102285 <= 4175 km/hour at 8.5 on 09/21 (time:8:30)

Next up: Star TYC 4941-583-1 Magnitude 9.45 above path Day 0 about 15 hours ahead
Star TYC 4940-264-1 Magnitude 11.20 below path Day 0 about 11 hours ahead - Day 1 about 12 hours behind
Galaxy PGC 1124430 RA 12h 19m 46.6s above path Day 0 about 15 hours ahead - Day 1 about 11 hours behind
There are ** way ** more galaxies than I care to count. 

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,640,041
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 222 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 222 is Friday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1187 2021-09-24 06:31:02

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/08/28  Saturday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/24 Friday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

One day note ... this is the last Sol for Month 8

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 103.2  Sol Number: 223  Change in degrees is +.4
Previous SL:      102.8  Previous Sol:222

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   245,295,319 km [22.3 km/s] Difference is -095492 <= 4341 km/hour at 7.0 on 09/24 (time:7:01)
Distance: Mars >> Sun per theskylive.com:   245,390,811 km [22.3 km/s] Difference is -107124 <= 4285 km/hour at 9.0 on 09/23 (time:9:00)
Distance: Mars >> Sun per theskylive.com:   245,497,935 km [22.3 km/s] Difference is -099345 <= 4227 km/hour at 8.0 on 09/22 (time:8:00)

Next up: Star TYC 4941-1166-1 Magnitude 11.33 below path Day 0 about 16 hours ahead
Star TYC 4941-583-1 Magnitude 9.45 above path Day 0 about 15 hours ahead - Day 1 about 7 hours behind

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,640,041
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 223 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 223 is Saturday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1188 2021-09-25 05:56:44

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/09/01  Sunday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/25 Saturday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 103.7  Sol Number: 224  Change in degrees is +.5
Previous SL:      103.2  Previous Sol:223

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   245,189,687 km [22.3 km/s] Difference is -105632 <= 4383 km/hour at 7.1 on 09/25 (time:7:06)
Distance: Mars >> Sun per theskylive.com:   245,295,319 km [22.3 km/s] Difference is -095492 <= 4341 km/hour at 7.0 on 09/24 (time:7:01)
Distance: Mars >> Sun per theskylive.com:   245,390,811 km [22.3 km/s] Difference is -107124 <= 4285 km/hour at 9.0 on 09/23 (time:9:00)

Next up: Star TYC 4941-795-1 Magnitude 10.48 below path Day 0 about 12 hours ahead
Star TYC 4941-1166-1 Magnitude 11.33 below path Day 0 about 16 hours ahead - Day 1 about 5.5 hours behind

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,640,041
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 224 is in Month 09 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 09 extends from Sol 224 through 251. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 09
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 224 is Sunday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 9 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1189 2021-09-26 07:49:14

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/09/02  Monday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/26 Sunday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 104.1  Sol Number: 225  Change in degrees is +.4
Previous SL:      103.7  Previous Sol:224

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   245,074,355 km [22.3 km/s] Difference is -115332 <= 4452 km/hour at 9.0 on 09/26 (time:9:02)
Distance: Mars >> Sun per theskylive.com:   245,189,687 km [22.3 km/s] Difference is -105632 <= 4383 km/hour at 7.1 on 09/25 (time:7:06)
Distance: Mars >> Sun per theskylive.com:   245,295,319 km [22.3 km/s] Difference is -095492 <= 4341 km/hour at 7.0 on 09/24 (time:7:01)

Next up: HIP 60924 Magnitude 6.74 below path Day 0 about 15 hours ahead
There arre three Mini-Boomers in the view today, along with a generous set of galaxies.
Star TYC 4941-795-1 Magnitude 10.48 below path Day 0 about 12 hours ahead - Day 1 about 12 hours behind

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,640,041
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 225 is in Month 09 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 09 extends from Sol 224 through 251. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 09
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 225 is Monday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 9 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1190 2021-09-27 08:06:52

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/09/03  Tuesday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/27 Monday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 104.6  Sol Number: 226  Change in degrees is +.5
Previous SL:      104.1  Previous Sol:225

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   244,968,754 km [22.4 km/s] Difference is -105601 <= 4494 km/hour at 8.5 on 09/27 (time:8:30)
Distance: Mars >> Sun per theskylive.com:   245,074,355 km [22.4 km/s] Difference is -115332 <= 4452 km/hour at 9.0 on 09/26 (time:9:02)
Distance: Mars >> Sun per theskylive.com:   245,189,687 km [22.4 km/s] Difference is -105632 <= 4383 km/hour at 7.1 on 09/25 (time:7:06)

Next up: Star just above path TYC 4951-161-1 Magnitude 10.43 Day 0 about 10 hours ahead
Next up: Galaxy in path: Data is inaccessible - About 11 hours ahead
HIP 60924 Magnitude 6.74 below path Day 0 about 15 hours ahead -Day 1 about 7 hours past
There are two Mini-Boomers in the view today, along with a generous set of galaxies.

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,426,842 (decreasing)
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 226 is in Month 09 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 09 extends from Sol 224 through 251. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 09
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 226 is Tuesday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 9 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1191 2021-09-28 07:10:59

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/09/04  Wednesday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/28 Tuesday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 105.0  Sol Number: 227  Change in degrees is +.4
Previous SL:      104.6  Previous Sol:226

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   244,861,778 km [22.4 km/s] Difference is -106976 <= 4552 km/hour at 8.0 on 09/28 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   244,968,754 km [22.4 km/s] Difference is -105601 <= 4494 km/hour at 8.5 on 09/27 (time:8:30)
Distance: Mars >> Sun per theskylive.com:   245,074,355 km [22.4 km/s] Difference is -115332 <= 4452 km/hour at 9.0 on 09/26 (time:9:02)

Next up: Galaxy in path PGC 1082318 RA 12h 33m 17.8s Day 0 about 10 hours ahead
Star just above path TYC 4951-161-1 Magnitude 10.43 Day 0 about 10 hours ahead -Day 1 about 12 hours past
Galaxy in path: Data is inaccessible - About 11 hours ahead - Day 0 about 11 hours past Galaxy ID is PGC 1088154 RA 12h 31m 8.1s

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 393,359,412 (decreasing)
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 227 is in Month 09 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 09 extends from Sol 224 through 251. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 09
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 227 is Wednesday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 9 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1192 2021-09-29 07:58:24

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/09/05  Thursday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/29 Wednesday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 105.5  Sol Number: 228  Change in degrees is +.5
Previous SL:      105.0  Previous Sol:227

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   244,744,286 km [22.4 km/s] Difference is -117492 <= 4608 km/hour at 9.5 on 09/29 (time:8:31)
Distance: Mars >> Sun per theskylive.com:   244,861,778 km [22.4 km/s] Difference is -106976 <= 4552 km/hour at 8.0 on 09/28 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   244,968,754 km [22.4 km/s] Difference is -105601 <= 4494 km/hour at 8.5 on 09/27 (time:8:30)

Next up: Star TYC 4951-295-1 RA 12h 37m 04.4s just above path Day 0 about 20 hours ahead
Galaxy in path PGC 1082318 RA 12h 33m 17.8s Day 0 about 10 hours ahead - Day 1 out of view (elapsed time was 25.5 hours

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,277,493
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 228 is in Month 09 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 09 extends from Sol 224 through 251. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 09
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 228 is Thursday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 9 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1193 2021-09-30 06:32:00

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/09/06  Friday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/30 Thursday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 105.9  Sol Number: 229  Change in degrees is +.4
Previous SL:      105.5  Previous Sol:228

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   244,639,508 km [22.4 km/s] Difference is -104778 <= 4657 km/hour at 8.0 on 09/30 (time:8:00
Distance: Mars >> Sun per theskylive.com:   244,744,286 km [22.4 km/s] Difference is -117492 <= 4608 km/hour at 9.5 on 09/29 (time:9:31)
Distance: Mars >> Sun per theskylive.com:   244,861,778 km [22.4 km/s] Difference is -106976 <= 4552 km/hour at 8.0 on 09/28 (time:8:00)

Next up: Galaxy PGC 1072723 RA 12h 38m 15.9s in path Day 0 about 11 hours ahead
Star TYC 4951-295-1 RA 12h 37m 04.4s just above path Day 0 about 20 hours ahead - Day 1 Just past Mars

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal. 

Earth Distance at most recent update 2021/09/30 km 394,195,830 (decrease) The Mars/Earth distance is past maximum
Earth Distance (at last previous update here) was km 394,277,493

Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance reached maximum.

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 229 is in Month 09 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 09 extends from Sol 224 through 251. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 09
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 229 is Friday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 9 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1194 2021-10-01 05:22:11

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/09/07  Saturday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/10/01 Friday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 106.4  Sol Number: 230  Change in degrees is +.5
Previous SL:      105.9  Previous Sol:229

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   244,531,239 km [22.4 km/s] Difference is -108269 <= 4707 km/hour at 7.0 on 10/01 (time:7:00)
Distance: Mars >> Sun per theskylive.com:   244,639,508 km [22.4 km/s] Difference is -104778 <= 4657 km/hour at 8.0 on 09/30 (time:8:00
Distance: Mars >> Sun per theskylive.com:   244,744,286 km [22.4 km/s] Difference is -117492 <= 4608 km/hour at 9.5 on 09/29 (time:9:31)

Next up: Galaxy with visible shape: PGC 42409 RA 12h 40m 01.4s below path Day 0 about 8 hours ahead
Galaxy PGC 1072723 RA 12h 38m 15.9s in path Day 0 about 11 hours ahead  - Day 1 about 10 hours past
Star TYC 4951-295-1 RA 12h 37m 04.4s just above path Day 0 about 20 hours ahead - Day 1 Just past Mars - Day 2 Still visible at upper right of view

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal. 

Earth Distance 2021/10/01 394,101,657 (decrease)
Earth Distance at most recent update 2021/09/30 km 394,195,830 (decrease) The Mars/Earth distance is past maximum

Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance reached maximum.

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 230 is in Month 09 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 09 extends from Sol 224 through 251. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 09
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 230 is Saturday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 9 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1195 2021-10-02 09:25:29

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/09/07  Saturday <<-- Days of the week are ** IN ** alignment with Earth.  << Today is a Skip Day on Mars

Today on Earth: 2021/10/02 Saturday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

One Day Note: SearchTerm:Alignment start 2021/10/02 estimated 337 days between alignments

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 106.8  Sol Number: 230  Change in degrees is +.4
Previous SL:      106.4  Previous Sol:230

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   244,404,975 km [22.4 km/s] Difference is -126264 <= 4765 km/hour at 9.5 on 10/02 (time:9:30)
Distance: Mars >> Sun per theskylive.com:   244,531,239 km [22.4 km/s] Difference is -108269 <= 4707 km/hour at 7.0 on 10/01 (time:7:00)
Distance: Mars >> Sun per theskylive.com:   244,639,508 km [22.4 km/s] Difference is -104778 <= 4657 km/hour at 8.0 on 09/30 (time:8:00

Next up: We have two mini-Boomers on scene: HIP 62039 Magnitude 7.75 well below path Day 0 about 11 hours ahead
Galaxy with visible shape: PGC 42409 RA 12h 40m 01.4s below path Day 0 about 8 hours ahead - Day 1 Out of view

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal. 

Earth Distance 2021/10/02 393,976,495 (decrease)
Earth Distance 2021/10/01 394,101,657 (decrease)

Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance reached maximum.

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 230 is in Month 09 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 09 extends from Sol 224 through 251. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 09
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 230 is Saturday  in the Proposed Business calendar for Mars.  <<== Skip day occurred October 2nd the next skip day is expected November 8th on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in November (8th on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 9 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1196 2021-10-03 06:21:38

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/09/08  Sunday <<-- Days of the week are ** IN ** alignment with Earth. The next skip day is in November on Earth.

Today on Earth: 2021/10/03 Sunday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 107.3  Sol Number: 231  Change in degrees is +.5
Previous SL:      106.8  Previous Sol:231

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   244,296,638 km [22.4 km/s] Difference is -108337 <= 4815 km/hour at 8.0 on 10/03 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   244,404,975 km [22.4 km/s] Difference is -126264 <= 4765 km/hour at 9.5 on 10/02 (time:9:30)
Distance: Mars >> Sun per theskylive.com:   244,531,239 km [22.4 km/s] Difference is -108269 <= 4707 km/hour at 7.0 on 10/01 (time:7:00)

Next up: We have two mini-Boomers and a nice nebula in the view today: Star TYC 4952-702-1 Magnitude 10.46 is in path Day 0 about 10 hours ahead
HIP 62039 Magnitude 7.75 well below path Day 0 about 11 hours ahead - Day 1 about 10 hours past Mars

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal. 

Earth Distance 2021/10/03 393,874,053 (decrease)
Earth Distance 2021/10/02 393,976,495 (decrease)

Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance reached maximum.

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 231 is in Month 09 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 09 extends from Sol 224 through 251. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 09
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 231 is Sunday  in the Proposed Business calendar for Mars.  <<== Skip day occurred October 2nd the next skip day is expected November 8th on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in November 8th on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 9 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1197 2021-10-04 05:53:07

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/09/09  Monday <<-- Days of the week are ** IN ** alignment with Earth. The next skip day is in November on Earth.

Today on Earth: 2021/10/04 Monday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 107.8  Sol Number: 232  Change in degrees is +.5
Previous SL:      107.3  Previous Sol:231

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   244,182,212 km [22.5 km/s] Difference is -114426 <= 4869 km/hour at 8.5 on 10/04 (time:8:31)
Distance: Mars >> Sun per theskylive.com:   244,296,638 km [22.5 km/s] Difference is -108337 <= 4815 km/hour at 8.0 on 10/03 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   244,404,975 km [22.4 km/s] Difference is -126264 <= 4765 km/hour at 9.5 on 10/02 (time:9:30)

There is a nicely defined galaxy seen edge on in the view today: PGC 43235 RA 12h 48m 11.7s above path Day 0 about 14 hours ahead
Star TYC 4952-702-1 Magnitude 10.46 is in path Day 0 about 10 hours ahead - Day 1 About 12 hours behind at edge of view

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal. 

Earth Distance 2021/10/04 393,750,906 (decrease)
Earth Distance 2021/10/03 393,874,053 (decrease)
Earth Distance 2021/10/02 393,976,495 (decrease)

Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance reached maximum.

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 232 is in Month 09 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 09 extends from Sol 224 through 251. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 09
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 232 is Monday  in the Proposed Business calendar for Mars.  <<== Skip day occurred October 2nd the next skip day is expected November 8th on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in November 8th on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 9 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1198 2021-10-05 06:39:14

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/09/10  Tuesday <<-- Days of the week are ** IN ** alignment with Earth. The next skip day is in November on Earth.

Today on Earth: 2021/10/05 Tuesday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 108.2  Sol Number: 233  Change in degrees is +.4
Previous SL:      107.8  Previous Sol:232

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   244,061,768 km [22.5 km/s] Difference is -120444 <= 4916 km/hour at 8.0 on 10/05 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   244,182,212 km [22.5 km/s] Difference is -114426 <= 4869 km/hour at 8.5 on 10/04 (time:8:31)
Distance: Mars >> Sun per theskylive.com:   244,296,638 km [22.5 km/s] Difference is -108337 <= 4815 km/hour at 8.0 on 10/03 (time:8:00)

Next up: Mini-Boomer HIP 62729 Magnitude 9.17 above path and about 20 hours ahead on Day 0
Mini-Boomer 62422 Magnitude 7.27 is about to disappear from view in the lower right
Galaxy PGC 43235 RA 12h 48m 11.7s above path Day 0 about 14 hours ahead - Day 1 about 10 hours past - near top of view

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal. 

Earth Distance 2021/10/05 393,611,662 (decrease)
Earth Distance 2021/10/04 393,750,906 (decrease)
Earth Distance 2021/10/03 393,874,053 (decrease)

Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance reached maximum.

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 233 is in Month 09 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 09 extends from Sol 224 through 251. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 09
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 233 is Tuesday  in the Proposed Business calendar for Mars.  <<== Skip day occurred October 2nd the next skip day is expected November 8th on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in November 8th on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 9 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

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#1199 2021-10-06 07:00:22

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0036/09/11  Wednesday <<-- Days of the week are ** IN ** alignment with Earth. The next skip day is in November on Earth.

Today on Earth: 2021/10/06 Wednesday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 108.7  Sol Number: 234  Change in degrees is +.5
Previous SL:      108.2  Previous Sol:233

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Distance: Mars >> Sun per theskylive.com:   243,940,010 km [22.5 km/s] Difference is -121758 <= 4970 km/hour at 8.5 on 10/06 (time:8:30)
Distance: Mars >> Sun per theskylive.com:   244,061,768 km [22.5 km/s] Difference is -120444 <= 4916 km/hour at 8.0 on 10/05 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   244,182,212 km [22.5 km/s] Difference is -114426 <= 4869 km/hour at 8.5 on 10/04 (time:8:31)

The field is full of galaxies - only a couple are near enough to have definition
Next up: Mini-Boomer HIP 62898 Magnitude 9.32 in path Day 0 about 18 hours ahead
HIP 62729 Magnitude 9.17 above path and about 20 hours ahead on Day 0 - Day 1 about 5 hours behind

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal. 

Earth Distance 2021/10/06 393,464,715 (decrease)
Earth Distance 2021/10/05 393,611,662 (decrease)
Earth Distance 2021/10/04 393,750,906 (decrease)

Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance reached maximum.

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

Sol 234 is in Month 09 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 09 extends from Sol 224 through 251. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 09
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 234 is Wednesday  in the Proposed Business calendar for Mars.

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in November 8th on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 9 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

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#1200 2021-10-07 06:40:20

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 8,093

Re: Martian Calender - I have created a martian calender...

This post is about the conjunction of the Sun and Mars.  Earlier this topic reported on the appearance of Mercury in the view of Mars.

The Sun and Mars are close but not close enough to be visible in the view of the other.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

Update on October 7th: the Sun is NOT visible in the display by theskylive.com/mars-tracker
The display for the Sun shows the object at RA 12h 52m 08.9s and Declination -5 degrees 35 minutes 09.4 seconds
The display for Mars shows the object at      RA 12h 53m 57.9s and Declination -5 degrees 03 minutes 48.3 seconds
The Sun may pass below Mars and not in the view of Mars

***
243,822,004 km [22.5 km/s]
Thursday October 7 Sol 235 Lg 109.1

Investigation of conjunction of Mars and the Sun at 9 AM Earth (local) time:

Mars: RA 12h 53m 58.9s    Declination: -5 degrees 3 minutes 54.8 seconds

Sun:  RA 12h 52m 10.9s    Declination: -5 degrees 35 minutes 21.8 seconds

Galaxy PGC 170211 RA 12h 53m 29.4s   Declination: -5 25 minutes 47.0 seconds

Galaxy PGC 170211 appears to be between Mars and the Sun

Galaxy PGC 1045876 is above 170211 and to the left

Galaxy PGC 1045876 RA 12h 54m 3 seconds Declination: -5 degrees 21 minutes 8 seconds

It appears that in 7 hours the Sun will be at the RA where Mars is now.

But Mars is moving as well.



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