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Place holder for today's Calendar update:
Greenwich, UK 01/17/2025, 13:00:07 Europe/London
Object: Mars (open sky map)
RA 07h 53m 56.3s Dec +25° 14' 10.2" Appar J2000
Mag: -1.40 (Estimated: JPL) Const: Gemini
Sun Dist: 243,467,014 km [22.5 km/s]
Earth Dist: 96,494,991 km [8.0 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
31.1
Sol number:
64
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===
Today on Mars: 0038/03/08 Sunday Days of the week offset 5 with Earth. (count from Mars to Earth ) The Astronomical New Year on Earth has begun.
Sol 64 Business Month 3
Today on Earth: 2024/01/17 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: 38 Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees
===
Solar Longitude: 031.1 Sol Number: 064 Change in degrees is +.4 Julian date is: J0038064
Solar Longitude: 030.7 Sol Number: 063 Change in degrees is +.5 Julian date is: J0038063
Solar Longitude: 030.2 Sol Number: 062 Change in degrees is +.4 Julian date is: J0038062
<<#
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 http://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: 243,467,014 km [22.5 km/s] Difference is +125493 <= +5229 km/hour at 12 on 01/17 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 243,341,521 km [22.6 km/s] Difference is +126680 <= +5278 km/hour at 12 on 01/16 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 243,214,841 km [22.6 km/s] Difference is +127868 <= +5328 km/hour at 12 on 01/15 (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 Retrograde movement as seen from Earth.
Next up: Star in path: TYC 1929-1048-1 RA 07h 50m 0.08s – Day 0 -
PGC 1734507 RA 07h 52m 50.9s – Day 0 – Day 1 16 hours past Mars – things are really moving! Earth is passing under Mars. Distance is increasing.
====*====*>>>
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 5 and 6 minutes. Communications delay would be 10+ minutes round trip.
===
Earth Distance in km: 2025/01/17 96,599,000 (increasing) Earth is passing under Mars. Distance is likely to increase until opposition.
Earth Distance in km: 2025/01/16 96,386,000 (increasing)
Earth Distance in km: 2025/01/15 96,264,000 (increasing)
#>
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 64 is in Month 3 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 3 extends from Sol 57 through 84. <<== There are 28 days in Month 21. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 64 is Sunday in the Proposed Business calendar for Mars. Sol 49 was a Skip Day on Mars. Next is near 86 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 3 of 24 Quarter 1 of 4 [Month 3-6] (This month has 28 Sols)
Offline
Like button can go here
Place holder for today's Calendar update:
Greenwich, UK 01/18/2025, 13:00:05 Europe/London
Object: Mars (open sky map)
RA 07h 52m 13.4s Dec +25° 19' 08.2" Appar J2000
Mag: -1.39 (Estimated: JPL) Const: Gemini
Sun Dist: 243,591,292 km [22.5 km/s]
Earth Dist: 96,677,318 km [8.0 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
31.6
Sol number:
65
Offline
Like button can go here
===
Today on Mars: 0038/03/09 Monday Days of the week offset 5 with Earth. (count from Mars to Earth ) The Astronomical New Year on Earth has begun.
Sol 65 Business Month 3
Today on Earth: 2024/01/18 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: 38 Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees
===
Solar Longitude: 031.6 Sol Number: 065 Change in degrees is +.5 Julian date is: J0038065
Solar Longitude: 031.1 Sol Number: 064 Change in degrees is +.4 Julian date is: J0038064
Solar Longitude: 030.7 Sol Number: 063 Change in degrees is +.5 Julian date is: J0038063
<<#
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 http://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: 243,591.292 km [22.5 km/s] Difference is +124278 <= +5178 km/hour at 12 on 01/18 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 243,467,014 km [22.5 km/s] Difference is +125493 <= +5229 km/hour at 12 on 01/17 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 243,341,521 km [22.6 km/s] Difference is +126680 <= +5278 km/hour at 12 on 01/16 (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 Retrograde movement as seen from Earth.
Next up: Galaxies bracketing path: PGC 1741320 and 1736513 – Day 0 -
TYC 1929-1048-1 RA 07h 50m 0.08s – Day 0 – just past 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 5 and 6 minutes. Communications delay would be 10+ minutes round trip.
===
Earth Distance in km: 2025/01/18 96,792,000 (increasing)
Earth Distance in km: 2025/01/17 96,599,000 (increasing) Earth is passing under Mars. Distance is likely to increase until opposition.
Earth Distance in km: 2025/01/16 96,386,000 (increasing)
#>
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 65 is in Month 3 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 3 extends from Sol 57 through 84. <<== There are 28 days in Month 21. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 65 is Monday in the Proposed Business calendar for Mars. Sol 49 was a Skip Day on Mars. Next is near 86 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 3 of 24 Quarter 1 of 4 [Month 3-6] (This month has 28 Sols)
Offline
Like button can go here
Place holder for today's Calendar update
Greenwich, UK 01/19/2025, 13:00:21 Europe/London
Object: Mars (open sky map)
RA 07h 50m 31.1s Dec +25° 23' 54.9" Appar J2000
Mag: -1.39 (Estimated: JPL) Const: Gemini
Sun Dist: 243,714,386 km [22.5 km/s]
Earth Dist: 96,892,995 km [8.1 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
32.1
Sol number:
66
Offline
Like button can go here
===
Today on Mars: 0038/03/10 Sunday Days of the week offset 5 with Earth. (count from Mars to Earth )
Sol 66 Business Month 3
Today on Earth: 2024/01/19 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: 38 Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees
===
Solar Longitude: 032.1 Sol Number: 066 Change in degrees is +.5 Julian date is: J0038066
Solar Longitude: 031.6 Sol Number: 065 Change in degrees is +.5 Julian date is: J0038065
Solar Longitude: 031.1 Sol Number: 064 Change in degrees is +.4 Julian date is: J0038064
<<#
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 http://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: 243,714,386 km [22.5 km/s] Difference is +123094 <= +5129 km/hour at 12 on 01/19 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 243,591.292 km [22.5 km/s] Difference is +124278 <= +5178 km/hour at 12 on 01/18 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 243,467,014 km [22.5 km/s] Difference is +125493 <= +5229 km/hour at 12 on 01/17 (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 Retrograde movement as seen from Earth.
PGC 1741320 and 1736513 – Day 0 – Day 1 8 hours ahead
TYC 1929-1048-1 RA 07h 50m 0.08s – Day 0 – just past Mars - Day 1 16 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 5 and 6 minutes. Communications delay would be 10+ minutes round trip.
===
Earth Distance in km: 2025/01/19 96,952,000 (increasing)
Earth Distance in km: 2025/01/18 96,792,000 (increasing)
Earth Distance in km: 2025/01/17 96,599,000 (increasing) Earth is passing under Mars. Distance is likely to increase until opposition.
#>
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 66 is in Month 3 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 3 extends from Sol 57 through 84. <<== There are 28 days in Month 21. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 66 is Tuesday in the Proposed Business calendar for Mars. Sol 49 was a Skip Day on Mars. Next is near 86 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 3 of 24 Quarter 1 of 4 [Month 3-6] (This month has 28 Sols)
Offline
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Place holder for today's Calendar update
Greenwich, UK 01/20/2025, 13:00:07 Europe/London
Object: Mars (open sky map)
RA 07h 48m 49.8s Dec +25° 28' 29.1" Appar J2000
Mag: -1.34 (Estimated: JPL) Const: Gemini
Sun Dist: 243,836,221 km [22.5 km/s]
Earth Dist: 97,141,816 km [8.2 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
32.5
Sol number:
67
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===
Today on Mars: 0038/03/11 Monday Days of the week offset 5 with Earth. (count from Mars to Earth )
Sol 67 Business Month 3
Today on Earth: 2024/01/20 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: 38 Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees
===
Solar Longitude: 032.5 Sol Number: 067 Change in degrees is +.4 Julian date is: J0038067
Solar Longitude: 032.1 Sol Number: 066 Change in degrees is +.5 Julian date is: J0038066
Solar Longitude: 031.6 Sol Number: 065 Change in degrees is +.5 Julian date is: J0038065
<<#
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 http://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: 243,836,221 km [22.5 km/s] Difference is +121835 <= +5076 km/hour at 12 on 01/20 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 243,714,386 km [22.5 km/s] Difference is +123094 <= +5129 km/hour at 12 on 01/19 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 243,591.292 km [22.5 km/s] Difference is +124278 <= +5178 km/hour at 12 on 01/18 (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 Retrograde movement as seen from Earth.
Next up: Galaxy 16 hours ahead and below path: PGC 1739808 RA 07h 45m 42.2s – Day 0
PGC 1741320 and 1736513 – Day 0 – Day 1 8 hours ahead – Day 2 16 hours past – last day for this duo
====*====*>>>
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 5 and 6 minutes. Communications delay would be 10+ minutes round trip.
===
Earth Distance in km: 2025/01/20 97,218,000 (increasing)
Earth Distance in km: 2025/01/19 96,952,000 (increasing)
Earth Distance in km: 2025/01/18 96,792,000 (increasing)
#>
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 67 is in Month 3 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 3 extends from Sol 57 through 84. <<== There are 28 days in Month 21. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 67 is Wednesday in the Proposed Business calendar for Mars. Sol 49 was a Skip Day on Mars. Next is near 86 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 3 of 24 Quarter 1 of 4 [Month 3-6] (This month has 28 Sols)
Offline
Like button can go here
Place holder for today's Calendar update:
Greenwich, UK 01/21/2025, 13:00:00 Europe/London
Object: Mars (open sky map)
RA 07h 47m 09.4s Dec +25° 32' 50.4" Appar J2000
Mag: -1.32 (Estimated: JPL) Const: Gemini
Sun Dist: 243,956,845 km [22.5 km/s]
Earth Dist: 97,423,758 km [8.3 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
33
Sol number:
68
Offline
Like button can go here
===
Today on Mars: 0038/03/12 Thursday Days of the week offset 5 with Earth. (count from Mars to Earth )
Sol 68 Business Month 3
Today on Earth: 2024/01/21 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: 38 Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees
===
Solar Longitude: 033.0 Sol Number: 068 Change in degrees is +.5 Julian date is: J0038068
Solar Longitude: 032.5 Sol Number: 067 Change in degrees is +.4 Julian date is: J0038067
Solar Longitude: 032.1 Sol Number: 066 Change in degrees is +.5 Julian date is: J0038066
<<#
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 http://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: 243,956,845 km [22.5 km/s] Difference is +120624 <= +5020 km/hour at 12 on 01/21 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 243,836,221 km [22.5 km/s] Difference is +121835 <= +5076 km/hour at 12 on 01/20 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 243,714,386 km [22.5 km/s] Difference is +123094 <= +5129 km/hour at 12 on 01/19 (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 Retrograde movement as seen from Earth.
Next up: HIP 37704 Boomer 17 hours ahead Day 0
PGC 1739808 RA 07h 45m 42.2s – Day 0 – Day 1 8 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 5 and 6 minutes. Communications delay would be 10+ minutes round trip.
===
Earth Distance in km: 2025/01/21 97,499,000 (increasing)
Earth Distance in km: 2025/01/20 97,218,000 (increasing)
Earth Distance in km: 2025/01/19 96,952,000 (increasing)
#>
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 68 is in Month 3 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 3 extends from Sol 57 through 84. <<== There are 28 days in Month 21. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 68 is Thursday in the Proposed Business calendar for Mars. Sol 49 was a Skip Day on Mars. Next is near 86 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 3 of 24 Quarter 1 of 4 [Month 3-6] (This month has 28 Sols)
Offline
Like button can go here
Place Holder for today's Calendar update:
[39.9622N, 83.0017E] 01/22/2025, 19:01:42 Asia/Urumqi
Object: Mars (open sky map)
RA 07h 45m 30.5s Dec +25° 37' 05.1" Appar J2000
Mag: -1.31 (Estimated: JPL) Const: Gemini
Sun Dist: 244,076,389 km [22.5 km/s]
Earth Dist: 97,739,059 km [8.4 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
33.4
Sol number:
69
Offline
Like button can go here
===
Today on Mars: 0038/03/13 Friday Days of the week offset 5 with Earth. (count from Mars to Earth )
Sol 69 Business Month 3
Today on Earth: 2024/01/22 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: 38 Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees
===
Solar Longitude: 033.4 Sol Number: 069 Change in degrees is +.4 Julian date is: J0038069
Solar Longitude: 033.0 Sol Number: 068 Change in degrees is +.5 Julian date is: J0038068
Solar Longitude: 032.5 Sol Number: 067 Change in degrees is +.4 Julian date is: J0038067
<<#
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 http://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: 244,076,389 km [22.5 km/s] Difference is +119544 <= +4981 km/hour at 12 on 01/22 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 243,956,845 km [22.5 km/s] Difference is +120624 <= +5020 km/hour at 12 on 01/21 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 243,836,221 km [22.5 km/s] Difference is +121835 <= +5076 km/hour at 12 on 01/20 (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 Retrograde movement as seen from Earth.
Next up: HIP 37452 RA 07h 41m 17.4s – Day 0
HIP 37704 Boomer 17 hours ahead Day 0 – Day 1 8 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 5 and 6 minutes. Communications delay would be 10+ minutes round trip.
===
Earth Distance in km: 2025/01/22 97,894,000 (increasing)
Earth Distance in km: 2025/01/21 97,499,000 (increasing)
Earth Distance in km: 2025/01/20 97,218,000 (increasing)
#>
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 69 is in Month 3 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 3 extends from Sol 57 through 84. <<== There are 28 days in Month 21. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 69 is Friday in the Proposed Business calendar for Mars. Sol 49 was a Skip Day on Mars. Next is near 86 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 3 of 24 Quarter 1 of 4 [Month 3-6] (This month has 28 Sols)
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Place holder for today's Calendar update
Greenwich, UK 01/23/2025, 13:00:06 Europe/London
Object: Mars (open sky map)
RA 07h 43m 51.7s Dec +25° 40' 54.0" Appar J2000
Mag: -1.29 (Estimated: JPL) Const: Gemini
Sun Dist: 244,194,427 km [22.5 km/s]
Earth Dist: 98,086,363 km [8.5 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
33.9
Sol number:
70
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===
Today on Mars: 0038/03/14 Saturday Days of the week offset 5 with Earth. (count from Mars to Earth )
Sol 70 Business Month 3
Today on Earth: 2024/01/23 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: 38 Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees
===
Solar Longitude: 033.9 Sol Number: 070 Change in degrees is +.5 Julian date is: J0038070
Solar Longitude: 033.4 Sol Number: 069 Change in degrees is +.4 Julian date is: J0038069
Solar Longitude: 033.0 Sol Number: 068 Change in degrees is +.5 Julian date is: J0038068
<<#
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 http://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: 244,194,427 km [22.5 km/s] Difference is +118038 <= +4918 km/hour at 12 on 01/23 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 244,076,389 km [22.5 km/s] Difference is +119544 <= +4981 km/hour at 12 on 01/22 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 243,956,845 km [22.5 km/s] Difference is +120624 <= +5020 km/hour at 12 on 01/21 (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 Retrograde movement as seen from Earth.
Next up: Star 1905-807-1 RA 07h 39m 47.0s – Day 0 -
HIP 37452 RA 07h 41m 17.4s – Day 0 - Day 1 17 hours ahead
====*====*>>>
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 5 and 6 minutes. Communications delay would be 10+ minutes round trip.
===
Earth Distance in km: 2025/01/23 98,120,000 (increasing)
Earth Distance in km: 2025/01/22 97,894,000 (increasing)
Earth Distance in km: 2025/01/21 97,499,000 (increasing)
#>
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 70 is in Month 3 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 3 extends from Sol 57 through 84. <<== There are 28 days in Month 21. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 70 is Saturday in the Proposed Business calendar for Mars. Sol 49 was a Skip Day on Mars. Next is near 86 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
Offline
Like button can go here
Place holder for today's Calendar update:
Greenwich, UK 01/24/2025, 13:00:01 Europe/London
Object: Mars (open sky map)
RA 07h 42m 14.9s Dec +25° 44' 35.6" Appar J2000
Mag: -1.27 (Estimated: JPL) Const: Gemini
Sun Dist: 244,311,347 km [22.5 km/s]
Earth Dist: 98,466,532 km [8.6 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
34.3
Sol number:
71
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===
Today on Mars: 0038/03/15 Sunday Days of the week offset 5 with Earth. (count from Mars to Earth )
Sol 71 Business Month 3
Today on Earth: 2024/01/24 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: 38 Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees
===
Solar Longitude: 034.3 Sol Number: 071 Change in degrees is +.4 Julian date is: J0038071
Solar Longitude: 033.9 Sol Number: 070 Change in degrees is +.5 Julian date is: J0038070
Solar Longitude: 033.4 Sol Number: 069 Change in degrees is +.4 Julian date is: J0038069
<<#
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 http://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: 244,311,347 km [22.5 km/s] Difference is +116920 <= +4872 km/hour at 12 on 01/24 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 244,194,427 km [22.5 km/s] Difference is +118038 <= +4918 km/hour at 12 on 01/23 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 244,076,389 km [22.5 km/s] Difference is +119544 <= +4981 km/hour at 12 on 01/22 (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 Retrograde movement as seen from Earth.
TYC 1905-807-1 RA 07h 39m 47.0s – Day 0 – Day 1 8 hours ahead
HIP 37452 RA 07h 41m 17.4s – Day 0 - Day 1 17 hours ahead – Day 2 8 hours behind
====*====*>>>
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 5 and 6 minutes. Communications delay would be 10+ minutes round trip.
===
Earth Distance in km: 2025/01/24 98,530,000 (increasing)
Earth Distance in km: 2025/01/23 98,120,000 (increasing)
Earth Distance in km: 2025/01/22 97,894,000 (increasing)
#>
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 71 is in Month 3 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 3 extends from Sol 57 through 84. <<== There are 28 days in Month 21. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 71 is Sunday in the Proposed Business calendar for Mars. Sol 49 was a Skip Day on Mars. Next is near 86 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 3 of 24 Quarter 1 of 4 [Month 3-6] (This month has 28 Sols)
Offline
Like button can go here
Place holder for today's Calendar update
Greenwich, UK 01/25/2025, 13:00:05 Europe/London
Object: Mars (open sky map)
RA 07h 40m 40.1s Dec +25° 48' 03.1" Appar J2000
Mag: -1.27 (Estimated: JPL) Const: Gemini
Sun Dist: 244,427,032 km [22.4 km/s]
Earth Dist: 98,879,002 km [8.7 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
34.8
Sol number:
72
Offline
Like button can go here
===
Today on Mars: 0038/03/16 Monday Days of the week offset 5 with Earth. (count from Mars to Earth )
Sol 72 Business Month 3
Today on Earth: 2024/01/25 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: 38 Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees
===
Solar Longitude: 034.8 Sol Number: 072 Change in degrees is +.5 Julian date is: J0038072
Solar Longitude: 034.3 Sol Number: 071 Change in degrees is +.4 Julian date is: J0038071
Solar Longitude: 033.9 Sol Number: 070 Change in degrees is +.5 Julian date is: J0038070
<<#
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 http://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: 244,427,032 km [22.4 km/s] Difference is +115585 <= +4816 km/hour at 12 on 01/25 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 244,311,347 km [22.5 km/s] Difference is +116920 <= +4872 km/hour at 12 on 01/24 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 244,194,427 km [22.5 km/s] Difference is +118038 <= +4918 km/hour at 12 on 01/23 (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 Retrograde movement as seen from Earth.
Next up: Four galaxies above path: PGC 1760732 RA 07h 36m 55.3s – Day 0 -
TYC 1905-807-1 RA 07h 39m 47.0s – Day 0 – Day 1 8 hours ahead – Day 2 9+ hours past – likely last day for 807 at the current rate
====*====*>>>
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 5 and 6 minutes. Communications delay would be 10+ minutes round trip.
===
Earth Distance in km: 2025/01/25 98,994,000 (increasing)
Earth Distance in km: 2025/01/24 98,530,000 (increasing)
Earth Distance in km: 2025/01/23 98,120,000 (increasing)
#>
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 72 is in Month 3 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 3 extends from Sol 57 through 84. <<== There are 28 days in Month 21. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 72 is Monday in the Proposed Business calendar for Mars. Sol 49 was a Skip Day on Mars. Next is near 86 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 3 of 24 Quarter 1 of 4 [Month 3-6] (This month has 28 Sols)
Offline
Like button can go here
Place holder for today's Calendar update:
Greenwich, UK 01/26/2025, 13:00:00 Europe/London
Object: Mars (open sky map)
RA 07h 39m 07.3s Dec +25° 51' 17.4" Appar J2000
Mag: -1.24 (Estimated: JPL) Const: Gemini
Sun Dist: 244,541,451 km [22.4 km/s]
Earth Dist: 99,323,374 km [8.8 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
35.2
Sol number:
73
Offline
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===
Today on Mars: 0038/03/17 Tuesday Days of the week offset 5 with Earth. (count from Mars to Earth )
Sol 73 Business Month 3
Today on Earth: 2024/01/26 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: 38 Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees
===
Solar Longitude: 035.2 Sol Number: 073 Change in degrees is +.4 Julian date is: J0038073
Solar Longitude: 034.8 Sol Number: 072 Change in degrees is +.5 Julian date is: J0038072
Solar Longitude: 034.3 Sol Number: 071 Change in degrees is +.4 Julian date is: J0038071
<<#
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 http://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: 244,541,451 km [22.4 km/s] Difference is +114519 <= +4772 km/hour at 12 on 01/26 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 244,427,032 km [22.4 km/s] Difference is +115585 <= +4816 km/hour at 12 on 01/25 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 244,311,347 km [22.5 km/s] Difference is +116920 <= +4872 km/hour at 12 on 01/24 (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 Retrograde movement as seen from Earth.
PGC 1760732 RA 07h 36m 55.3s – Day 0 -Day 1 – 8 hours ahead
====*====*>>>
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 5 and 6 minutes. Communications delay would be 10+ minutes round trip.
===
Earth Distance in km: 2025/01/26 99,358,000 (increasing)
Earth Distance in km: 2025/01/25 98,994,000 (increasing)
Earth Distance in km: 2025/01/24 98,530,000 (increasing)
#>
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 73 is in Month 3 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 3 extends from Sol 57 through 84. <<== There are 28 days in Month 21. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 73 is Tuesday in the Proposed Business calendar for Mars. Sol 49 was a Skip Day on Mars. Next is near 86 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 3 of 24 Quarter 1 of 4 [Month 3-6] (This month has 28 Sols)
Offline
Like button can go here
Place holder for today's Calendar update:
Greenwich, UK 01/27/2025, 13:00:00 Europe/London
Object: Mars (open sky map)
RA 07h 37m 36.5s Dec +25° 54' 17.8" Appar J2000
Mag: -1.22 (Estimated: JPL) Const: Gemini
Sun Dist: 244,654,617 km [22.4 km/s]
Earth Dist: 99,799,372 km [8.9 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
35.7
Sol number:
74
Offline
Like button can go here
===
Today on Mars: 0038/03/18 Wednesday Days of the week offset 5 with Earth. (count from Mars to Earth )
Sol 74 Business Month 3
Today on Earth: 2024/01/27 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: 38 Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees
===
Solar Longitude: 035.7 Sol Number: 074 Change in degrees is +.5 Julian date is: J0038074
Solar Longitude: 035.2 Sol Number: 073 Change in degrees is +.4 Julian date is: J0038073
Solar Longitude: 034.8 Sol Number: 072 Change in degrees is +.5 Julian date is: J0038072
<<#
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 http://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: 244,654,617 km [22.4 km/s] Difference is +113166 <= +4715 km/hour at 12 on 01/27 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 244,541,451 km [22.4 km/s] Difference is +114519 <= +4772 km/hour at 12 on 01/26 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 244,427,032 km [22.4 km/s] Difference is +115585 <= +4816 km/hour at 12 on 01/25 (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 Retrograde movement as seen from Earth.
Next up: Galaxy above and ahead: PGC 1766144 RA 07h 34m 38.3s Day 0 -
PGC 1760732 RA 07h 36m 55.3s – Day 0 -Day 1 – 8 hours ahead – Day 2 19 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 5 and 6 minutes. Communications delay would be 10+ minutes round trip.
===
Earth Distance in km: 2025/01/27 100,039,000 (increasing)
Earth Distance in km: 2025/01/26 99,358,000 (increasing)
Earth Distance in km: 2025/01/25 98,994,000 (increasing)
#>
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 74 is in Month 3 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 3 extends from Sol 57 through 84. <<== There are 28 days in Month 21. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 74 is Wednesday in the Proposed Business calendar for Mars. Sol 49 was a Skip Day on Mars. Next is near 86 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 3 of 24 Quarter 1 of 4 [Month 3-6] (This month has 28 Sols)
Offline
Like button can go here
Place holder for today's Calendar update:
Greenwich, UK 01/28/2025, 13:00:00 Europe/London
Object: Mars (open sky map)
RA 07h 36m 07.7s Dec +25° 57' 04.9" Appar J2000
Mag: -1.22 (Estimated: JPL) Const: Gemini
Sun Dist: 244,766,517 km [22.4 km/s]
Earth Dist: 100,306,584 km [9.0 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
36.1
Sol number:
75
Offline
Like button can go here
===
Today on Mars: 0038/03/19 Thursday Days of the week offset 5 with Earth. (count from Mars to Earth )
Sol 75 Business Month 3
Today on Earth: 2024/01/28 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: 38 Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees
===
Solar Longitude: 036.1 Sol Number: 075 Change in degrees is +.4 Julian date is: J0038075
Solar Longitude: 035.7 Sol Number: 074 Change in degrees is +.5 Julian date is: J0038074
Solar Longitude: 035.2 Sol Number: 073 Change in degrees is +.4 Julian date is: J0038073
<<#
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 http://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: 244,654,617 km [22.4 km/s] Difference is +113166 <= +4715 km/hour at 12 on 01/27 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 244,654,617 km [22.4 km/s] Difference is +113166 <= +4715 km/hour at 12 on 01/27 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 244,541,451 km [22.4 km/s] Difference is +114519 <= +4772 km/hour at 12 on 01/26 (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 Retrograde movement as seen from Earth.
Next up: HIP 36725 RA 07h 33m 12.7s – Day 0
PGC 1766144 RA 07h 34m 38.3s Day 0 – Day 1 above 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 5 and 6 minutes. Communications delay would be 10+ minutes round trip.
===
Earth Distance in km: 2025/01/28 100,394,000 (increasing)
Earth Distance in km: 2025/01/27 100,039,000 (increasing)
Earth Distance in km: 2025/01/26 99,358,000 (increasing)
#>
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 75 is in Month 3 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 3 extends from Sol 57 through 84. <<== There are 28 days in Month 21. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 75 is Thursday in the Proposed Business calendar for Mars. Sol 49 was a Skip Day on Mars. Next is near 86 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 3 of 24 Quarter 1 of 4 [Month 3-6] (This month has 28 Sols)
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Place holder for today's Calendar update
Greenwich, UK 01/29/2025, 13:00:02 Europe/London
Object: Mars (open sky map)
RA 07h 34m 41.4s Dec +25° 59' 38.3" Appar J2000
Mag: -1.19 (Estimated: JPL) Const: Gemini
Sun Dist: 244,877,147 km [22.4 km/s]
Earth Dist: 100,844,598 km [9.2 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
36.6
Sol number:
76
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