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

tahanson43206 · 2024-11-02 10:10:15

===
Today on Mars: 0037/24/18 Wednesday Days of the week offset 3 with Earth. (count from Mars to Earth (updated 2024/08/28))

Today on Earth: 2024/11/02 Saturday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37 Martian Astronomical Month in 12 month format: 12 <<== The Astronomical year will increment when longitude reaches 360 degrees

===
Solar Longitude: 354.6 Sol Number: 659 Change in degrees is +.5 Julian date is: J0037659
Solar Longitude: 354.1 Sol Number: 658 Change in degrees is +.5 Julian date is: J0037658
Solar Longitude: 353.6 Sol Number: 657 Change in degrees is +.5 Julian date is: J0037657
<<#

Note that Solar Longitude measurement varies as a function of location in orbit. Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other. Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
Aphelion occurred at--- Ls 071 on Sol 152. Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 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.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun. Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com: 231,118,435 km [23.8 km/s] Difference is +190067 <= +7919 km/hour at 12 on 11/02 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 230,928,368 km [23.8 km/s] Difference is +190528 <= +7938 km/hour at 12 on 11/01 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 230,737,840 km [23.8 km/s] Difference is +190887 <= +7953 km/hour at 12 on 10/31 (time 12:00) (24 hours)
==*==*==*

Observation: The sky view is ** filled ** with objects and some have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth. The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth. Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: Star just above path TYC 1388-790-0 RA 08h 7m 54.2s – Day 0
TYC 1388-1397-1 RA 08h 6m 28.7s – Day 0 – Day 1 – Right at Mars –
TYC 1388-688-1 RA 08h 5m 17.9s – Day 0 – Day 1 still ahead of Mars – Day 2 above 18 hours past marker
====*====*>>>

Zoom Out Capability As a general observation ... 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 (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading left at a downward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

Light travel time today is between 8 and 9 minutes. Communications delay would be 16+ minutes round trip.

===
Earth Distance: 2024/11/02 150,591,000 (decreasing)
Earth Distance: 2024/11/01 151,619,000 (decreasing)
Earth Distance: 2024/10/31 152,822,000 (decreasing)
#>

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers. Estimated light times:
1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun)
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022. Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

===
Sol 659 is in Month 24 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 24 extends from Sol 642 through 668. <<== There are 27 days in Month 24. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 659 is Wednesday in the Proposed Business calendar for Mars. Sol 630 was a Skip Day on Mars. Next is near 667
##

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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.
The next cycle began on the first Sol of the period of coincidence. The alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

***https://mars.nasa.gov/insight/weather/***
***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
Su Mo Tu We Th Fr Sa
1    2    3    4    5    6    7
8    9 10    11 12 13 14
15 16 17    18 19 20 21
22 23 24    25 26 27 28

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

Month 24 of 24: Last month of Quarter 4 and Last month of Mars year 37

tahanson43206 · 2024-11-03 07:02:06

Place holder for today's Calendar update

Today's snapshot is taken after an elapsed time of 25 hours, due to the end of Daylight Savings Time in the US.

Greenwich, UK 11/03/2024, 13:00:00 Europe/London
Object: Mars (open sky map)
RA 08h 09m 08.4s Dec +21° 38' 11.3" Appar J2000
Mag: 0.05 (Estimated: JPL) Const: Cancer
Sun Dist: 231,316,018 km [23.8 km/s]
Earth Dist: 149,634,346 km [16.5 km/s]

Martian Year: << we are in the final weeks of Year 37
37
Martian Astronomical Month:
12
Solar longitude Ls: << Year 38 will begin when longitude reaches 360
355.1
Sol number: << Year 38 will begin when Sol reaches 668+
660

tahanson43206 · 2024-11-03 09:21:40

===
Today on Mars: 0037/24/19 Thursday Days of the week offset 3 with Earth. (count from Mars to Earth (updated 2024/08/28))

Today on Earth: 2024/11/03 Sunday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37 Martian Astronomical Month in 12 month format: 12 <<== The Astronomical year will increment when longitude reaches 360 degrees

===
Solar Longitude: 355.1 Sol Number: 660 Change in degrees is +.5 Julian date is: J0037660
Solar Longitude: 354.6 Sol Number: 659 Change in degrees is +.5 Julian date is: J0037659
Solar Longitude: 354.1 Sol Number: 658 Change in degrees is +.5 Julian date is: J0037658
<<#

Note that Solar Longitude measurement varies as a function of location in orbit. Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other. Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
Aphelion occurred at--- Ls 071 on Sol 152. Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 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.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun. Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com: 231,316,018 km [23.8 km/s] Difference is +197583 <= +7903 km/hour at 12 on 11/03 (time 12:00) (25 hours)
Distance: Mars >> Sun per theskylive.com: 231,118,435 km [23.8 km/s] Difference is +190067 <= +7919 km/hour at 12 on 11/02 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 230,928,368 km [23.8 km/s] Difference is +190528 <= +7938 km/hour at 12 on 11/01 (time 12:00) (24 hours)
==*==*==*

Observation: The sky view is ** filled ** with objects and some have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth. The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth. Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: Galaxy at 19 hours ahead marker: PGC 1654920 RA 08h 9m 7.1s – Day 0 -
TYC 1388-790-0 RA 08h 7m 54.2s – Day 0 – Day 1 right at Mars -
TYC 1388-1397-1 RA 08h 6m 28.7s – Day 0 – Day 1 – Right at Mars – Day 2 just past 19 hours ago marker
====*====*>>>

Zoom Out Capability As a general observation ... 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 (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading left at a downward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

Light travel time today is between 8 and 9 minutes. Communications delay would be 16+ minutes round trip.

===
Earth Distance: 2024/11/03 149,528,000 (decreasing)
Earth Distance: 2024/11/02 150,591,000 (decreasing)
Earth Distance: 2024/11/01 151,619,000 (decreasing)
#>

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers. Estimated light times:
1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun)
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022. Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

===
Sol 660 is in Month 24 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 24 extends from Sol 642 through 668. <<== There are 27 days in Month 24. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 660 is Thursday in the Proposed Business calendar for Mars. Sol 630 was a Skip Day on Mars. Next is near 667
##

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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.
The next cycle began on the first Sol of the period of coincidence. The alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

***https://mars.nasa.gov/insight/weather/***
***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
Su Mo Tu We Th Fr Sa
1    2    3    4    5    6    7
8    9 10    11 12 13 14
15 16 17    18 19 20 21
22 23 24    25 26 27 28

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

Month 24 of 24: Last month of Quarter 4 and Last month of Mars year 37

tahanson43206 · 2024-11-04 07:04:49

Place holder for today's Calendar update.

We are in the closing stretch for Year 37 on Mars.

Greenwich, UK 11/04/2024, 13:00:00 Europe/London << today's computation will cover 24 hours. We counted 25 hours yesterday due to end of DST
Object: Mars (open sky map)
RA 08h 10m 36.3s Dec +21° 35' 46.8" Appar J2000
Mag: 0.04 (Estimated: JPL) Const: Cancer
Sun Dist: 231,505,264 km [23.8 km/s]
Earth Dist: 148,535,106 km [16.3 km/s]

Martian Year: << we are in the final days of Year 37
37
Martian Astronomical Month:
12
Solar longitude Ls: Year 38 will begin when Mars passes 360 degrees
355.6
Sol number: << New Year's Eve will occur on Sol 668
661

tahanson43206 · 2024-11-04 11:45:47

===
Today on Mars: 0037/24/20 Friday Days of the week offset 3 with Earth. (count from Mars to Earth (updated 2024/08/28))

Today on Earth: 2024/11/04 Monday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37 Martian Astronomical Month in 12 month format: 12 <<== The Astronomical year will increment when longitude reaches 360 degrees

===
Solar Longitude: 355.6 Sol Number: 661 Change in degrees is +.5 Julian date is: J0037661
Solar Longitude: 355.1 Sol Number: 660 Change in degrees is +.5 Julian date is: J0037660
Solar Longitude: 354.6 Sol Number: 659 Change in degrees is +.5 Julian date is: J0037659
<<#

Note that Solar Longitude measurement varies as a function of location in orbit. Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other. Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
Aphelion occurred at--- Ls 071 on Sol 152. Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 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.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun. Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com: 231,505,264 km [23.8 km/s] Difference is +189246 <= +7885 km/hour at 12 on 11/04 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 231,316,018 km [23.8 km/s] Difference is +197583 <= +7903 km/hour at 12 on 11/03 (time 12:00) (25 hours)
Distance: Mars >> Sun per theskylive.com: 231,118,435 km [23.8 km/s] Difference is +190067 <= +7919 km/hour at 12 on 11/02 (time 12:00) (24 hours)
==*==*==*

Observation: The sky view is ** filled ** with objects and some have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth. The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth. Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: Two stars above and below 19 hours ahead marker: TYC 1389-1644-1 RA 08h 10m 33.5s – Day 0 -
PGC 1654920 RA 08h 9m 7.1s – Day 0 – Day 1 just past Mars
TYC 1388-790-0 RA 08h 7m 54.2s – Day 0 – Day 1 right at Mars – Day 1 Past 19 hours ago marker
====*====*>>>

Zoom Out Capability As a general observation ... 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 (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading left at a downward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

Light travel time today is between 8 and 9 minutes. Communications delay would be 16+ minutes round trip.

===
Earth Distance: 2024/11/04 148,320,000 (decreasing)
Earth Distance: 2024/11/03 149,528,000 (decreasing)
Earth Distance: 2024/11/02 150,591,000 (decreasing)
#>

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers. Estimated light times:
1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun)
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022. Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

===
Sol 661 is in Month 24 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 24 extends from Sol 642 through 668. <<== There are 27 days in Month 24. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 661 is Friday in the Proposed Business calendar for Mars. Sol 630 was a Skip Day on Mars. Next is near 667
##

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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.
The next cycle began on the first Sol of the period of coincidence. The alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

***https://mars.nasa.gov/insight/weather/***
***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
Su Mo Tu We Th Fr Sa
1    2    3    4    5    6    7
8    9 10    11 12 13 14
15 16 17    18 19 20 21
22 23 24    25 26 27 28

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

Month 24 of 24: Last month of Quarter 4 and Last month of Mars year 37

tahanson43206 · 2024-11-05 06:52:36

Place holder for today's Calendar Update

Greenwich, UK 11/05/2024, 13:00:00 Europe/London
Object: Mars (open sky map)
RA 08h 12m 02.7s Dec +21° 33' 27.5" Appar J2000
Mag: 0.01 (Estimated: JPL) Const: Cancer
Sun Dist: 231,694,069 km [23.7 km/s]
Earth Dist: 147,436,583 km [16.1 km/s]

Martian Year:
37
Martian Month:
12
Solar longitude Ls: << Year 38 will begin when longitude crosses 360
356.2
Sol number:
662

tahanson43206 · 2024-11-05 09:03:28

===
Today on Mars: 0037/24/21 Saturday Days of the week offset 3 with Earth. (count from Mars to Earth (updated 2024/08/28))

Today on Earth: 2024/11/05 Tuesday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37 Martian Astronomical Month in 12 month format: 12 <<== The Astronomical year will increment when longitude reaches 360 degrees

===
Solar Longitude: 356.2 Sol Number: 662 Change in degrees is +.6 Julian date is: J0037662
Solar Longitude: 355.6 Sol Number: 661 Change in degrees is +.5 Julian date is: J0037661
Solar Longitude: 355.1 Sol Number: 660 Change in degrees is +.5 Julian date is: J0037660
<<#

Note that Solar Longitude measurement varies as a function of location in orbit. Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other. Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
Aphelion occurred at--- Ls 071 on Sol 152. Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 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.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun. Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com: 231,694,069 km [23.7 km/s] Difference is +188806 <= +7867 km/hour at 12 on 11/05 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 231,505,264 km [23.8 km/s] Difference is +189246 <= +7885 km/hour at 12 on 11/04 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 231,316,018 km [23.8 km/s] Difference is +197583 <= +7903 km/hour at 12 on 11/03 (time 12:00) (25 hours)
==*==*==*

Observation: The sky view is ** filled ** with objects and some have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth. The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth. Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: Star just above 20 hours ahead marker TYC 1389-1846-1 RA 08h 11m 50.5s – Day 0 -
TYC 1389-1644-1 RA 08h 10m 33.5s – Day 0 – just past Mars
PGC 1654920 RA 08h 9m 7.1s – Day 0 – Day 1 just past Mars - Day 2 Still visible past the 20 hours ago marker
====*====*>>>

Zoom Out Capability As a general observation ... 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 (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading left at a downward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

Light travel time today is between 8 and 9 minutes. Communications delay would be 16+ minutes round trip.

===
Earth Distance: 2024/11/05 147,348,000 (decreasing)
Earth Distance: 2024/11/04 148,320,000 (decreasing)
Earth Distance: 2024/11/03 149,528,000 (decreasing)
#>

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers. Estimated light times:
1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun) Minimum is about 56 million kilometers
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022. Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

===
Sol 662 is in Month 24 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 24 extends from Sol 642 through 668. <<== There are 27 days in Month 24. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 662 is Saturday in the Proposed Business calendar for Mars. Sol 630 was a Skip Day on Mars. Next is near 667
##

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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.
The next cycle began on the first Sol of the period of coincidence. The alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

***https://mars.nasa.gov/insight/weather/***
***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
Su Mo Tu We Th Fr Sa
1    2    3    4    5    6    7
8    9 10    11 12 13 14
15 16 17    18 19 20 21
22 23 24    25 26 27 28

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

Month 24 of 24: Last month of Quarter 4 and Last month of Mars year 37

tahanson43206 · 2024-11-06 06:58:43

Place Holder for Today's Calendar update

Greenwich, UK 11/06/2024, 13:00:00 Europe/London
Object: Mars (open sky map)
RA 08h 13m 27.0s Dec +21° 31' 12.9" Appar J2000
Mag: -0.02 (Estimated: JPL) Const: Cancer
Sun Dist: 231,882,419 km [23.7 km/s]
Earth Dist: 146,339,050 km [15.9 km/s]

Martian Year: << we are in the final week of Year 37
37
Martian Astronomical Month:
12
Solar longitude Ls: << Year 38 will begin When Mars crosses 360 degrees
356.7
Sol number:
663

tahanson43206 · 2024-11-06 14:52:42

===
Today on Mars: 0037/24/22 Sunday Days of the week offset 3 with Earth. (count from Mars to Earth (updated 2024/08/28))
We are in the last week of the last month of the last quarter of Year 37
Today on Earth: 2024/11/06 Wednesday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37 Martian Astronomical Month in 12 month format: 12 <<== The Astronomical year will increment when longitude reaches 360 degrees

===
Solar Longitude: 356.7 Sol Number: 663 Change in degrees is +.5 Julian date is: J0037663
Solar Longitude: 356.2 Sol Number: 662 Change in degrees is +.6 Julian date is: J0037662
Solar Longitude: 355.6 Sol Number: 661 Change in degrees is +.5 Julian date is: J0037661
<<#

Note that Solar Longitude measurement varies as a function of location in orbit. Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other. Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
Aphelion occurred at--- Ls 071 on Sol 152. Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 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.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun. Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com: 231,882,419 km [23.7 km/s] Difference is +188350 <= +7848 km/hour at 12 on 11/06 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 231,694,069 km [23.7 km/s] Difference is +188806 <= +7867 km/hour at 12 on 11/05 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 231,505,264 km [23.8 km/s] Difference is +189246 <= +7885 km/hour at 12 on 11/04 (time 12:00) (24 hours)
==*==*==*

Observation: The sky view is ** filled ** with objects and some have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth. The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth. Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: Star above path: TYC 1389-943-1 RA 08h 14m 50.8s – Day 0 -
TYC 1389-1846-1 RA 08h 11m 50.5s – Day 0 – Day 1 above 10 hours past marker
====*====*>>>

Zoom Out Capability As a general observation ... 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 (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading left at a downward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

Light travel time today is between 8 and 9 minutes. Communications delay would be 16+ minutes round trip.

===
Earth Distance in km: 2024/11/06 145,986,000 (decreasing)
Earth Distance in km: 2024/11/05 147,348,000 (decreasing)
Earth Distance in km: 2024/11/04 148,320,000 (decreasing)
#>

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers. Estimated light times:
1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun) Minimum is about 56 million kilometers
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022. Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

===
Sol 663 is in Month 24 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 24 extends from Sol 642 through 668. <<== There are 27 days in Month 24. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 663 is Sunday in the Proposed Business calendar for Mars. Sol 630 was a Skip Day on Mars. Next is near 667
##

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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.
The next cycle began on the first Sol of the period of coincidence. The alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

***https://mars.nasa.gov/insight/weather/***
***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
Su Mo Tu We Th Fr Sa
1    2    3    4    5    6    7
8    9 10    11 12 13 14
15 16 17    18 19 20 21
22 23 24    25 26 27 28

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

Month 24 of 24: Last month of Quarter 4 and Last month of Mars year 37

tahanson43206 · 2024-11-07 07:01:07

Place holder for today's Calendar update:

Greenwich, UK 11/07/2024, 13:00:00 Europe/London
Object: Mars (open sky map)
RA 08h 14m 49.4s Dec +21° 29' 02.9" Appar J2000
Mag: -0.04 (Estimated: JPL) Const: Cancer
Sun Dist: 232,070,301 km [23.7 km/s]
Earth Dist: 145,242,768 km [15.7 km/s]

Martian Year:
37
Martian Astronomical Month:
12
Solar longitude Ls:
357.2
Sol number:
664

tahanson43206 · 2024-11-07 08:31:53

===
Today on Mars: 0037/24/23 Monday Days of the week offset 3 with Earth. (count from Mars to Earth (updated 2024/08/28))
We are in the last week of the last month of the last quarter of Year 37
Today on Earth: 2024/11/07 Thursday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37 Martian Astronomical Month in 12 month format: 12 <<== The Astronomical year will increment when longitude reaches 360 degrees

===
Solar Longitude: 357.2 Sol Number: 664 Change in degrees is +.5 Julian date is: J0037664
Solar Longitude: 356.7 Sol Number: 663 Change in degrees is +.5 Julian date is: J0037663
Solar Longitude: 356.2 Sol Number: 662 Change in degrees is +.6 Julian date is: J0037662
<<#

Note that Solar Longitude measurement varies as a function of location in orbit. Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other. Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
Aphelion occurred at--- Ls 071 on Sol 152. Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 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.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun. Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com: 232,070,301 km [23.7 km/s] Difference is +187882 <= +7828 km/hour at 12 on 11/07 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 231,882,419 km [23.7 km/s] Difference is +188350 <= +7848 km/hour at 12 on 11/06 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 231,694,069 km [23.7 km/s] Difference is +188806 <= +7867 km/hour at 12 on 11/05 (time 12:00) (24 hours)
==*==*==*

Observation: The sky view is ** filled ** with objects and some have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth. The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth. Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

Note: Mars will go retrograde starting December 6, 2024 and continue through February 23, 2025.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
TYC 1389-943-1 RA 08h 14m 50.8s – Day 0 - Day 1 The star has barely moved – it is outside the 20 hours ahead marker
TYC 1389-1846-1 RA 08h 11m 50.5s – Day 0 – Day 1 above 10 hours past marker – Day 2 past 20 hours ago marker
====*====*>>>

Zoom Out Capability As a general observation ... 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 (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading left at a downward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

Light travel time today is between 8 and 9 minutes. Communications delay would be 16+ minutes round trip.

===
Earth Distance in km: 2024/11/07 145,175,000 (decreasing)
Earth Distance in km: 2024/11/06 145,986,000 (decreasing)
Earth Distance in km: 2024/11/05 147,348,000 (decreasing)
#>

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers. Estimated light times:
1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun) Minimum is about 56 million kilometers
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022. Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

===
Sol 664 is in Month 24 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 24 extends from Sol 642 through 668. <<== There are 27 days in Month 24. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 664 is Monday in the Proposed Business calendar for Mars. Sol 630 was a Skip Day on Mars. Next is near 667
##

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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.
The next cycle began on the first Sol of the period of coincidence. The alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

***https://mars.nasa.gov/insight/weather/***
***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
Su Mo Tu We Th Fr Sa
1    2    3    4    5    6    7
8    9 10    11 12 13 14
15 16 17    18 19 20 21
22 23 24    25 26 27 28

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

Month 24 of 24: Last month of Quarter 4 and Last month of Mars year 37

tahanson43206 · 2024-11-08 06:54:47

Place holder for today's Calendar update.

We are in the final week of Year 37 on Mars.

Greenwich, UK 11/08/2024, 13:00:00 Europe/London
Object: Mars (open sky map)
RA 08h 16m 09.7s Dec +21° 26' 58.6" Appar J2000
Mag: -0.07 (Estimated: JPL) Const: Cancer
Sun Dist: 232,257,700 km [23.7 km/s]
Earth Dist: 144,148,029 km [15.5 km/s]

Martian Year:
37
Martian Astronomical Month:
12
Solar longitude Ls:
357.7
Sol number:
665

tahanson43206 · 2024-11-08 09:23:02

===
Today on Mars: 0037/24/24 Tuesday Days of the week offset 3 with Earth. (count from Mars to Earth (updated 2024/08/28))
We are in the last week of the last month of the last quarter of Year 37
Today on Earth: 2024/11/08 Friday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37 Martian Astronomical Month in 12 month format: 12 <<== The Astronomical year will increment when longitude reaches 360 degrees

===
Solar Longitude: 357.7 Sol Number: 665 Change in degrees is +.5 Julian date is: J0037665
Solar Longitude: 357.2 Sol Number: 664 Change in degrees is +.5 Julian date is: J0037664
Solar Longitude: 356.7 Sol Number: 663 Change in degrees is +.5 Julian date is: J0037663
<<#

Note that Solar Longitude measurement varies as a function of location in orbit. Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other. Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
Aphelion occurred at--- Ls 071 on Sol 152. Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 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.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun. Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com: 232,257,700 km [23.7 km/s] Difference is +187399 <= +7808 km/hour at 12 on 11/08 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 232,070,301 km [23.7 km/s] Difference is +187882 <= +7828 km/hour at 12 on 11/07 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 231,882,419 km [23.7 km/s] Difference is +188350 <= +7848 km/hour at 12 on 11/06 (time 12:00) (24 hours)
==*==*==*

Observation: The sky view is ** filled ** with objects and some have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth. The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth. Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

Note: Mars will go retrograde starting December 6, 2024 and continue through February 23, 2025.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: Star below path TYC 1389-1917-1 RA 08h 15m 31.4s – Day 0 -
TYC 1389-943-1 RA 08h 14m 50.8s – Day 0 - Day 1 outside the 20 hours ahead marker- Day 2 right at Mars
====*====*>>>

Zoom Out Capability As a general observation ... 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 (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading left at a downward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

Light travel time today is between 7 and 8 minutes. Communications delay would be 14+ minutes round trip.

===
Earth Distance in km: 2024/11/08 144,045,000 (decreasing)
Earth Distance in km: 2024/11/07 145,175,000 (decreasing)
Earth Distance in km: 2024/11/06 145,986,000 (decreasing)
#>

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers. Estimated light times:
1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun) Minimum is about 56 million kilometers
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022. Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

===
Sol 665 is in Month 24 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 24 extends from Sol 642 through 668. <<== There are 27 days in Month 24. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 665 is Tuesday in the Proposed Business calendar for Mars. Sol 630 was a Skip Day on Mars. Next is near 667
##

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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.
The next cycle began on the first Sol of the period of coincidence. The alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

***https://mars.nasa.gov/insight/weather/***
***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
Su Mo Tu We Th Fr Sa
1    2    3    4    5    6    7
8    9 10    11 12 13 14
15 16 17    18 19 20 21
22 23 24    25 26 27 28

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

Month 24 of 24: Last month of Quarter 4 and Last month of Mars year 37

tahanson43206 · 2024-11-09 07:01:31

Place Holder for today's Calendar update:

Greenwich, UK 11/09/2024, 13:00:00 Europe/London
Object: Mars (open sky map)
RA 08h 17m 27.6s Dec +21° 25' 00.4" Appar J2000
Mag: -0.09 (Estimated: JPL) Const: Cancer
Sun Dist: 232,444,604 km [23.7 km/s]
Earth Dist: 143,055,092 km [15.3 km/s]

Martian Year:
37
Martian Astronomical Month:
12
Solar longitude Ls: << Year 38 will begin when longitude crosses 360
358.2
Sol number:
666

tahanson43206 · 2024-11-09 09:10:42

===
Today on Mars: 0037/24/25 Wednesday Days of the week offset 3 with Earth. (count from Mars to Earth (updated 2024/08/28))
We are in the last week of the last month of the last quarter of Year 37
Today on Earth: 2024/11/09 Saturday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37 Martian Astronomical Month in 12 month format: 12 <<== The Astronomical year will increment when longitude reaches 360 degrees

===
Solar Longitude: 358.2 Sol Number: 666 Change in degrees is +.5 Julian date is: J0037666
Solar Longitude: 357.7 Sol Number: 665 Change in degrees is +.5 Julian date is: J0037665
Solar Longitude: 357.2 Sol Number: 664 Change in degrees is +.5 Julian date is: J0037664
<<#

Note that Solar Longitude measurement varies as a function of location in orbit. Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other. Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
Aphelion occurred at--- Ls 071 on Sol 152. Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 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.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun. Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com: 232,444,604 km [23.7 km/s] Difference is +186904 <= +7788 km/hour at 12 on 11/09 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 232,257,700 km [23.7 km/s] Difference is +187399 <= +7808 km/hour at 12 on 11/08 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 232,070,301 km [23.7 km/s] Difference is +187882 <= +7828 km/hour at 12 on 11/07 (time 12:00) (24 hours)
==*==*==*

Observation: The sky view is ** filled ** with objects and some have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth. The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth. Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

Note: Mars will go retrograde starting December 6, 2024 and continue through February 23, 2025.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: at 22 hours before: TYC 1390-1275-1 RA 08h 17m 21.0s – Day 0
TYC 1389-1917-1 RA 08h 15m 31.4s – Day 0 – Day 1 below 11 hours past
TYC 1389-943-1 RA 08h 14m 50.8s – Day 0 - Day 1 outside the 20 hours ahead marker- Day 2 right at Mars – Day 3 above 22 hours past
====*====*>>>

Zoom Out Capability As a general observation ... 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 (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading left at a downward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

Light travel time today is between 7 and 8 minutes. Communications delay would be 14+ minutes round trip.

===
Earth Distance in km: 2024/11/09 142,961,000 (decreasing)
Earth Distance in km: 2024/11/08 144,045,000 (decreasing)
Earth Distance in km: 2024/11/07 145,175,000 (decreasing)
#>

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers. Estimated light times:
1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun) Minimum is about 56 million kilometers
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022. Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

===
Sol 666 is in Month 24 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 24 extends from Sol 642 through 668. <<== There are 27 days in Month 24. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 666 is Wednesday in the Proposed Business calendar for Mars. Sol 630 was a Skip Day on Mars. Next is near 667
##

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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.
The next cycle began on the first Sol of the period of coincidence. The alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

***https://mars.nasa.gov/insight/weather/***
***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
Su Mo Tu We Th Fr Sa
1    2    3    4    5    6    7
8    9 10    11 12 13 14
15 16 17    18 19 20 21
22 23 24    25 26 27 28

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

Month 24 of 24: Last month of Quarter 4 and Last month of Mars year 37

tahanson43206 · 2024-11-10 06:56:00

Place holder for today's Calendar update.

We are in the last week of Year 37 on Mars.

Greenwich, UK 11/10/2024, 13:00:00 Europe/London
Object: Mars (open sky map)
RA 08h 18m 44.0s Dec +21° 23' 08.3" Appar J2000
Mag: -0.12 (Estimated: JPL) Const: Cancer
Sun Dist: 232,630,998 km [23.6 km/s]
Earth Dist: 141,964,226 km [15.2 km/s]

Martian Year:
37
Martian Astronomical Month:
12
Solar longitude Ls: << Year 38 will begin when longitude crosses 360 degrees
358.7
Sol number:
667

tahanson43206 · 2024-11-10 12:21:54

===
Today on Mars: 0037/24/26 Thursday Days of the week offset 3 with Earth. (count from Mars to Earth (updated 2024/08/28))
We are in the last week of the last month of the last quarter of Year 37
Today on Earth: 2024/11/10 Sunday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37 Martian Astronomical Month in 12 month format: 12 <<== The Astronomical year will increment when longitude reaches 360 degrees

===
Solar Longitude: 358.7 Sol Number: 667 Change in degrees is +.5 Julian date is: J0037667
Solar Longitude: 358.2 Sol Number: 666 Change in degrees is +.5 Julian date is: J0037666
Solar Longitude: 357.7 Sol Number: 665 Change in degrees is +.5 Julian date is: J0037665
<<#

Note that Solar Longitude measurement varies as a function of location in orbit. Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other. Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
Aphelion occurred at--- Ls 071 on Sol 152. Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 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.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun. Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com: 232,630,998 km [23.6 km/s] Difference is +186394 <= +7766 km/hour at 12 on 11/10 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 232,444,604 km [23.7 km/s] Difference is +186904 <= +7788 km/hour at 12 on 11/09 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 232,257,700 km [23.7 km/s] Difference is +187399 <= +7808 km/hour at 12 on 11/08 (time 12:00) (24 hours)
==*==*==*

Observation: The sky view is ** filled ** with objects and some have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth. The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth. Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

Note: Mars will go retrograde starting December 6, 2024 and continue through February 23, 2025.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: Bright star TYC 1390-1444-1 RA 08h 18m 54.5s – Day 0 -
TYC 1390-1275-1 RA 08h 17m 21.0s – Day 0 – Day 1 Just past Mars -
TYC 1389-1917-1 RA 08h 15m 31.4s – Day 0 – Day 1 below 11 hours past - Day 2 past 22 hours
TYC 1389-943-1 RA 08h 14m 50.8s – Day 0 - Day 1 20 hours - Day 2 at Mars – Day 3 above 22 hours past – Day 4 still visible at far right
====*====*>>>

Zoom Out Capability As a general observation ... 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 (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading left at a downward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

Light travel time today is between 7 and 8 minutes. Communications delay would be 14+ minutes round trip.

===
Earth Distance in km: 2024/11/10 141,724,000 (decreasing)
Earth Distance in km: 2024/11/09 142,961,000 (decreasing)
Earth Distance in km: 2024/11/08 144,045,000 (decreasing)
#>

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers. Estimated light times:
1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun) Minimum is about 56 million kilometers
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022. Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

===
Sol 667 is in Month 24 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 24 extends from Sol 642 through 668. <<== There are 27 days in Month 24. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 667 is Thursday in the Proposed Business calendar for Mars. Sol 630 was a Skip Day on Mars. Next is near 667
##

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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.
The next cycle began on the first Sol of the period of coincidence. The alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

***https://mars.nasa.gov/insight/weather/***
***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
Su Mo Tu We Th Fr Sa
1    2    3    4    5    6    7
8    9 10    11 12 13 14
15 16 17    18 19 20 21
22 23 24    25 26 27 28

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

Month 24 of 24: Last month of Quarter 4 and Last month of Mars year 37

tahanson43206 · Yesterday 07:09:31

Place holder for today's Calendar update

Greenwich, UK 11/11/2024, 13:00:00 Europe/London
Object: Mars (open sky map)
RA 08h 19m 58.3s Dec +21° 21' 22.1" Appar J2000
Mag: -0.12 (Estimated: JPL) Const: Cancer
Sun Dist: 232,816,868 km [23.6 km/s]
Earth Dist: 140,875,698 km [15.0 km/s]

Martian Year: Year 38 will begin in the next two Earth days
37
Martian Month:
12
Solar longitude Ls: << Year 38 will begin when longitude crosses 360 degrees
359.2
Sol number: << Skip day! The last of Year 37
667

tahanson43206 · Yesterday 11:52:25

===
Today on Mars: 0037/24/26 Thursday Days of the week offset 3 with Earth. (count from Mars to Earth (updated 2024/08/28)) << Skipdayonmars
We are in the last week of the last month of the last quarter of Year 37
Today on Earth: 2024/11/11 Monday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37 Martian Astronomical Month in 12 month format: 12 <<== The Astronomical year will increment when longitude reaches 360 degrees

===
Solar Longitude: 359.2 Sol Number: 667 Change in degrees is +.5 Julian date is: J0037667 Skipdayonmars
Solar Longitude: 358.7 Sol Number: 667 Change in degrees is +.5 Julian date is: J0037667
Solar Longitude: 358.2 Sol Number: 666 Change in degrees is +.5 Julian date is: J0037666
<<#

Note that Solar Longitude measurement varies as a function of location in orbit. Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other. Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
Aphelion occurred at--- Ls 071 on Sol 152. Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 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.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun. Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com: 232,816,868 km [23.6 km/s] Difference is +185870 <= +7744 km/hour at 12 on 11/11 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 232,630,998 km [23.6 km/s] Difference is +186394 <= +7766 km/hour at 12 on 11/10 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 232,444,604 km [23.7 km/s] Difference is +186904 <= +7788 km/hour at 12 on 11/09 (time 12:00) (24 hours)
==*==*==*

Observation: The sky view is ** filled ** with objects and some have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth. The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth. Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

Note: Mars will go retrograde starting December 6, 2024 and continue through February 23, 2025.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: Star above 23 hours ahead marker: TYC 1390-1394-1 RA 08h 20m 1.1s – Day 0
TYC 1390-1444-1 RA 08h 18m 54.5s – Day 0 – Day 1 above and ahead of Mars
TYC 1390-1275-1 RA 08h 17m 21.0s – Day 0 – Day 1 Just past Mars – Day 2 just past 23 hours ago marker
====*====*>>>

Zoom Out Capability As a general observation ... 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 (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading left at a downward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

Light travel time today is between 7 and 8 minutes. Communications delay would be 14+ minutes round trip.

===
Earth Distance in km: 2024/11/11 140,657,000 (decreasing)
Earth Distance in km: 2024/11/10 141,724,000 (decreasing)
Earth Distance in km: 2024/11/09 142,961,000 (decreasing)
#>

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers. Estimated light times:
1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun) Minimum is about 56 million kilometers
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022. Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

===
Sol 667 is in Month 24 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 24 extends from Sol 642 through 668. <<== There are 27 days in Month 24. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 667 is Thursday in the Proposed Business calendar for Mars. Sol 667 was a Skip Day on Mars. Next is near 37 of Year 38
##

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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.
The next cycle began on the first Sol of the period of coincidence. The alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

***https://mars.nasa.gov/insight/weather/***
***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
Su Mo Tu We Th Fr Sa
1    2    3    4    5    6    7
8    9 10    11 12 13 14
15 16 17    18 19 20 21
22 23 24    25 26 27 28

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

Month 24 of 24: Last month of Quarter 4 and Last month of Mars year 37

tahanson43206 · Today 07:02:15

Place holder for today's Calendar update

Greenwich, UK 11/12/2024, 13:00:00 Europe/London
Object: Mars (open sky map)
RA 08h 21m 10.2s Dec +21° 19' 42.6" Appar J2000
Mag: -0.18 (Estimated: JPL) Const: Cancer
Sun Dist: 233,002,204 km [23.6 km/s]
Earth Dist: 139,789,760 km [14.8 km/s]

Today is New Year's Eve on Mars!
This day is extended in length so that at midnight, the Business Calendar matches the Astronomical Calendar.

Martian Year: << This is the last Sol of Year 37
37
Martian Month: << This is the last Sol of Astronomical Month 12
12
Solar longitude Ls: << Year 38 will begin when longitude crosses 360
359.7
Sol number: << Last Sol of Year 37
668

On Earth, tomorrow, Mars Year 38 will be under way.

On Mars, New Years will be celebrated by no one.

(th)

tahanson43206 · Today 09:56:33

===
Today on Mars: 0037/24/28 Saturday Days of the week offset 3 with Earth. (count from Mars to Earth (updated 2024/08/28)) << Skipdayonmars
Today is New Year's Eve of Year 37
Today on Earth: 2024/11/12 Tuesday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37 Martian Astronomical Month in 12 month format: 12 <<== The Astronomical year will increment when longitude reaches 360 degrees

===
Solar Longitude: 359.7 Sol Number: 668 Change in degrees is +.5 Julian date is: J0037668 NewYearsDay
Solar Longitude: 359.2 Sol Number: 667 Change in degrees is +.5 Julian date is: J0037667 Skipdayonmars
Solar Longitude: 358.7 Sol Number: 667 Change in degrees is +.5 Julian date is: J0037667
<<#

Note that Solar Longitude measurement varies as a function of location in orbit. Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other. Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
Aphelion occurred at--- Ls 071 on Sol 152. Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 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.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun. Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com: 233,002,204 km [23.6 km/s] Difference is +185336 <= +7722 km/hour at 12 on 11/12 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 232,816,868 km [23.6 km/s] Difference is +185870 <= +7744 km/hour at 12 on 11/11 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 232,630,998 km [23.6 km/s] Difference is +186394 <= +7766 km/hour at 12 on 11/10 (time 12:00) (24 hours)
==*==*==*

Observation: The sky view is ** filled ** with objects and some have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth. The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth. Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

Note: Mars will go retrograde starting December 6, 2024 and continue through February 23, 2025.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: Galaxy at 24 hours marker: PGC 1649255 RA 08h 21m 10.9s – Day 0 -
TYC 1390-1394-1 RA 08h 20m 1.1s – Day 0 – Day 1 just ahead of Mars
TYC 1390-1444-1 RA 08h 18m 54.5s – Day 0 – Day 1 ahead of Mars - Day 2 past 12 hours marker
====*====*>>>

Zoom Out Capability As a general observation ... 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 (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading left at a downward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

Light travel time today is between 7 and 8 minutes. Communications delay would be 14+ minutes round trip.

===
Earth Distance in km: 2024/11/12 139,662,000 (decreasing)
Earth Distance in km: 2024/11/11 140,657,000 (decreasing)
Earth Distance in km: 2024/11/10 141,724,000 (decreasing)
#>

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers. Estimated light times:
1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun) Minimum is about 56 million kilometers
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022. Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

===
Sol 666 is in Month 24 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 24 extends from Sol 642 through 668. <<== There are 27 days in Month 24. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 668 is Saturday in the Proposed Business calendar for Mars. Sol 667 was a Skip Day on Mars. Next is near 37 of Year 38
##

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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.
The next cycle began on the first Sol of the period of coincidence. The alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

***https://mars.nasa.gov/insight/weather/***
***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
Su Mo Tu We Th Fr Sa
1    2    3    4    5    6    7
8    9 10    11 12 13 14
15 16 17    18 19 20 21
22 23 24    25 26 27 28

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

Month 24 of 24: Last month of Quarter 4 and Last month of Mars year 37

New Year's Eve on Mars
Sol 668 of Year 37

New Mars Forums

Announcement

#2476 2024-11-02 10:10:15

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

#2477 2024-11-03 07:02:06

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

#2478 2024-11-03 09:21:40

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

#2479 2024-11-04 07:04:49

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

#2480 2024-11-04 11:45:47

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

#2481 2024-11-05 06:52:36

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

#2482 2024-11-05 09:03:28

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

#2483 2024-11-06 06:58:43

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

#2484 2024-11-06 14:52:42

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

#2485 2024-11-07 07:01:07

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

#2486 2024-11-07 08:31:53

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

#2487 2024-11-08 06:54:47

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

#2488 2024-11-08 09:23:02

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

#2489 2024-11-09 07:01:31

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

#2490 2024-11-09 09:10:42

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

#2491 2024-11-10 06:56:00

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

#2492 2024-11-10 12:21:54

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

#2493 Yesterday 07:09:31

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

#2494 Yesterday 11:52:25

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

#2495 Today 07:02:15

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

#2496 Today 09:56:33

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

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