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Place holder for today's Calendar Update:
These readings capture the position of Mars at a precise moment in time as recorded on Earth.
The readings are then distributed in the main Calendar report document.
London ENG (GB) 02/23/2025, 13:00:01 Europe/London
Object: Mars (open sky map)
RA 07h 15m 50.7s Dec +26° 01' 45.2" Appar J2000
Mag: -0.43 (Estimated: JPL) Const: Gemini
Sun Dist: 247,214,132 km [22.2 km/s]
Earth Dist: 122,610,164 km [13.1 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
47.8
Sol number:
100
Online
Like button can go here
===
Today on Mars: 0038/04/16 Monday Days of the week offset 6 with Earth. (count from Mars to Earth )
Sol 100 Business Month 4
Today on Earth: 2025/02/23 Sunday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=
We have received feedback that the elegant simplicity of this CalendarForMars is not obvious. Please help us to modify the daily Calendar report so that the simplicty of this calendar is easier to recognize. This calendar has been in operation for two full Mars years. It has proven flawless.
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: 047.8 Sol Number: 100 Change in degrees is +.5 Julian date is: J0038100
Solar Longitude: 047.3 Sol Number: 099 Change in degrees is +.4 Julian date is: J0038099
Solar Longitude: 046.9 Sol Number: 098 Change in degrees is +.4 Julian date is: J0038098
#
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: 247,214,132 km [22.2 km/s] Difference is +77154 <= +3214 km/hour at 12 on 02/23 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,136,978 km [22.2 km/s] Difference is +78587 <= +3274 km/hour at 12 on 02/22 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,058,391 km [22.2 km/s] Difference is +79955 <= +3331 km/hour at 12 on 02/21 (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.
End of Retrograde movement is close at hand – Right excursion will (apparently) reach 7h 14m 17.7s.
Next down: HIP 35066 RA 07h 15m 03.5s Mars will circle this star on the way back to regular order
PGC 1762783 RA 07h 14m 52.8s – below path 71 hours ahead Day 0 – Day 1 44 ahead – Day 2 – 4 below Mars – save for return
TYC 1913-29-1 RA 07h 15m 55.5s – Day 0 next 52 hours – Day 1 next 27 hours – Day 2 at Mars – Day 3 through 9 past Mars and above
HIP 35333 and HIP 35273 – Day 0 – Day 1 ahead – Day 2 ahead – Day 3 middle Day 4 through 7 past Day 8 out of view on left – save for return
Mars RA 07h 15m 50.5s – still moving West <<== Path is now descending to right and the bend back to regular movement is visible 72 hours out
Mars RA 07h 15m 54.1s – still moving West <<== Path is now descending to right and the bend back to regular movement is visible 72 hours out
====*====*>>>
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.
Light travel time today is between 6 and 7 minutes. Communications delay would be 12+ minutes round trip.
===
Earth Distance in km: 2025/02/23 122,717,000 (increasing)
Earth Distance in km: 2025/02/22 121,759,000 (increasing)
Earth Distance in km: 2025/02/21 120,496,000 (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.
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 100 is in Month 4 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 4 extends from Sol 85 through 112. <<== There are 28 days in Month 4. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 100 is Monday in the Proposed Business calendar for Mars. Sol 85 was a Skip Day on Mars. Next is near 112 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
Copyright the Mars Society All Rights Reserved
Month 4 of 24 Quarter 1 of 4 [Month 4-6] (This month has 28 Sols)
Online
Like button can go here
Place holder for today's Calendar update:
London ENG (GB) 02/24/2025, 13:00:00 Europe/London
Object: Mars (open sky map)
RA 07h 15m 49.8s Dec +25° 59' 58.7" Appar J2000
Mag: -0.38 (Estimated: JPL) Const: Gemini
Sun Dist: 247,289,911 km [22.2 km/s]
Earth Dist: 123,744,748 km [13.2 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
48.2
Sol number:
101
Online
Like button can go here
===
Today on Mars: 0038/04/17 Tuesday Days of the week offset 6 with Earth. (count from Mars to Earth )
Sol 101 Business Month 4
Today on Earth: 2025/02/24 Monday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=
We have received feedback that the elegant simplicity of this CalendarForMars is not obvious. Please help us to modify the daily Calendar report so that the simplicty of this calendar is easier to recognize. This calendar has been in operation for two full Mars years. It has proven flawless.
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: 048.2 Sol Number: 101 Change in degrees is +.4 Julian date is: J0038101
Solar Longitude: 047.8 Sol Number: 100 Change in degrees is +.5 Julian date is: J0038100
Solar Longitude: 047.3 Sol Number: 099 Change in degrees is +.4 Julian date is: J0038099
#
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: 247,289,911 km [22.2 km/s] Difference is +75779 <= +3157 km/hour at 12 on 02/24 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,214,132 km [22.2 km/s] Difference is +77154 <= +3214 km/hour at 12 on 02/23 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,136,978 km [22.2 km/s] Difference is +78587 <= +3274 km/hour at 12 on 02/22 (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.
End of Retrograde movement is close at hand – Right excursion will (apparently) reach 7h 14m 17.7s.
HIP 35066 RA 07h 15m 03.5s Mars will circle this star on the way back to regular order – Day 2 – 2 Circle is under way
PGC 1762783 RA 07h 14m 52.8s – below path 71 hours ahead Day 0 – Day 1 44 ahead – Day 2 – 4 below Mars – save for return
TYC 1913-29-1 RA 07h 15m 55.5s – Day 0 next 52 hours – Day 1 next 27 hours – Day 2 at Mars – Day 3 through 9 past Mars and above
HIP 35333 and HIP 35273 – Day 0 – Day 1 ahead – Day 2 ahead – Day 3 middle Day 4 through 7 past Day 8 out of view on left – save for return
Mars RA 07h 15m 50.0s – The return to regular motion has begun
Mars RA 07h 15m 50.5s – still moving West <<== Path is now descending to right and the bend back to regular movement is visible 72 hours out
====*====*>>>
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.
Light travel time today is between 6 and 7 minutes. Communications delay would be 12+ minutes round trip.
===
Earth Distance in km: 2025/02/24 123,965,000 (increasing)
Earth Distance in km: 2025/02/23 122,717,000 (increasing)
Earth Distance in km: 2025/02/22 121,759,000 (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.
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 101 is in Month 4 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 4 extends from Sol 85 through 112. <<== There are 28 days in Month 4. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 101 is Tuesday in the Proposed Business calendar for Mars. Sol 85 was a Skip Day on Mars. Next is near 112 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
Copyright the Mars Society All Rights Reserved
Month 4 of 24 Quarter 1 of 4 [Month 4-6] (This month has 28 Sols)
Online
Like button can go here
Place holder for today's Calendar update:
London ENG (GB) 02/25/2025, 13:00:00 Europe/London
Object: Mars (open sky map)
RA 07h 15m 51.9s Dec +25° 58' 06.6" Appar J2000
Mag: -0.35 (Estimated: JPL) Const: Gemini
Sun Dist: 247,364,292 km [22.2 km/s]
Earth Dist: 124,894,677 km [13.4 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
48.7
Sol number:
102
For the Record: We have completed two full Mars years in this topic.
Mars year 34 was current in 2019 Mars year 35 started 2019-03-24 Mars [1] Year 36 started 2021-02-08 Mars [2] Year 37 started 2022-12-27
You can see the start of each new Mars Year by entering a search for: N e w Y e a r s D a y O n M a r s
Spaces have been entered to prevent the search engine from finding this post.
Online
Like button can go here
===
Today on Mars: 0038/04/18 Wednesday Days of the week offset 6 with Earth. (count from Mars to Earth )
Sol 102 Business Month 4
Today on Earth: 2025/02/25 Tuesday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=
We have received feedback that the elegant simplicity of this CalendarForMars is not obvious. Please help us to modify the daily Calendar report so that the simplicty of this calendar is easier to recognize. This calendar has been in operation for two full Mars years. It has proven flawless.
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: 048.7 Sol Number: 102 Change in degrees is +.5 Julian date is: J0038102
Solar Longitude: 048.2 Sol Number: 101 Change in degrees is +.4 Julian date is: J0038101
Solar Longitude: 047.8 Sol Number: 100 Change in degrees is +.5 Julian date is: J0038100
#
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: 247,364,292 km [22.2 km/s] Difference is +74381 <= +3099 km/hour at 12 on 02/25 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,289,911 km [22.2 km/s] Difference is +75779 <= +3157 km/hour at 12 on 02/24 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,214,132 km [22.2 km/s] Difference is +77154 <= +3214 km/hour at 12 on 02/23 (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.
=== Mars is in Regular movement as seen from Earth.
Next down: HIP 35070 RA 07h 17m 08.0s – more than 72 hours out Day 0
HIP 35066 RA 07h 15m 03.5s Mars will circle this star on the way back to regular order – Day 2 – 3 Circle is under way – Mars is abreast of star
PGC 1762783 RA 07h 14m 52.8s – below path 71 hours ahead Day 0 – Day 1 44 ahead – Day 2 – 4 below Mars – save for return
TYC 1913-29-1 RA 07h 15m 55.5s – Day 0 next 52 hours – Day 1 next 27 hours – Day 2 at Mars – Day 3 through 9 past Mars and above
HIP 35333 and HIP 35273 – Day 0 – Day 1 ahead – Day 2 ahead – Day 3 middle Day 4 through 7 past Day 8 out of view on left – save for return
====*====*>>>
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.
Light travel time today is between 6 and 7 minutes. Communications delay would be 12+ minutes round trip.
===
Earth Distance in km: 2025/02/25 125,013,000 (increasing)
Earth Distance in km: 2025/02/24 123,965,000 (increasing)
Earth Distance in km: 2025/02/23 122,717,000 (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.
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 102 is in Month 4 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 4 extends from Sol 85 through 112. <<== There are 28 days in Month 4. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 102 is Wednesday in the Proposed Business calendar for Mars. Sol 85 was a Skip Day on Mars. Next is near 112 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
Copyright the Mars Society All Rights Reserved
Month 4 of 24 Quarter 1 of 4 [Month 4-6] (This month has 28 Sols)
Online
Like button can go here
Place holder for today's Calendar update:
London ENG (GB) 02/26/2025, 13:00:12 Europe/London
Object: Mars (open sky map)
RA 07h 15m 57.1s Dec +25° 56' 07.5" Appar J2000
Mag: -0.35 (Estimated: JPL) Const: Gemini
Sun Dist: 247,437,279 km [22.1 km/s]
Earth Dist: 126,059,573 km [13.6 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
49.1
Sol number:
103
Online
Like button can go here
===
Today on Mars: 0038/04/19 Thursday Days of the week offset 6 with Earth. (count from Mars to Earth )
Sol 103 Business Month 4
Today on Earth: 2025/02/26 Wednesday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=
We have received feedback that the elegant simplicity of this CalendarForMars is not obvious. Please help us to modify the daily Calendar report so that the simplicty of this calendar is easier to recognize. This calendar has been in operation for two full Mars years. It has proven flawless.
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: 049.1 Sol Number: 103 Change in degrees is +.4 Julian date is: J0038103
Solar Longitude: 048.7 Sol Number: 102 Change in degrees is +.5 Julian date is: J0038102
Solar Longitude: 048.2 Sol Number: 101 Change in degrees is +.4 Julian date is: J0038101
#
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: 247,437,279 km [22.1 km/s] Difference is +72987 <= +3041 km/hour at 12 on 02/26 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,364,292 km [22.2 km/s] Difference is +74381 <= +3099 km/hour at 12 on 02/25 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,289,911 km [22.2 km/s] Difference is +75779 <= +3157 km/hour at 12 on 02/24 (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.
=== Mars is in Regular movement as seen from Earth.
HIP 35070 RA 07h 17m 08.0s – more than 72 hours out Day 0 - Day 1 72 hours out
HIP 35066 RA 07h 15m 03.5s Mars will circle this star on the way back to regular order – Day 2 – 4 Circle is under way – Mars slightly below
PGC 1762783 RA 07h 14m 52.8s – below path 71 hours ahead Day 0 – Day 1 44 ahead – Day 2 – 4 below Mars – save for return
TYC 1913-29-1 RA 07h 15m 55.5s – Day 0 next 52 hours – Day 1 next 27 hours – Day 2 at Mars – Day 3 through 9 past Mars and above
HIP 35333 and HIP 35273 – Day 0 – Day 1 ahead – Day 2 ahead – Day 3 middle Day 4 through 7 past Day 8 out of view on left – save for return
====*====*>>>
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.
Light travel time today is between 6 and 7 minutes. Communications delay would be 12+ minutes round trip.
===
Earth Distance in km: 2025/02/26 126,330,000 (increasing)
Earth Distance in km: 2025/02/25 125,013,000 (increasing)
Earth Distance in km: 2025/02/24 123,965,000 (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.
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 103 is in Month 4 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 4 extends from Sol 85 through 112. <<== There are 28 days in Month 4. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 103 is Thursday in the Proposed Business calendar for Mars. Sol 85 was a Skip Day on Mars. Next is near 112 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
Copyright the Mars Society All Rights Reserved
Month 4 of 24 Quarter 1 of 4 [Month 4-6] (This month has 28 Sols)
Online
Like button can go here
Place holder for today's Calendar update:
London ENG (GB) 02/27/2025, 13:00:00 Europe/London
Object: Mars (open sky map)
RA 07h 16m 05.7s Dec +25° 54' 02.6" Appar J2000
Mag: -0.33 (Estimated: JPL) Const: Gemini
Sun Dist: 247,508,840 km [22.1 km/s]
Earth Dist: 127,238,398 km [13.8 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
49.6
Sol number:
104
Online
Like button can go here
===
Today on Mars: 0038/04/20 Friday Days of the week offset 6 with Earth. (count from Mars to Earth )
Sol 104 Business Month 4
Today on Earth: 2025/02/27 Thursday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=
We have received feedback that the elegant simplicity of this CalendarForMars is not obvious. Please help us to modify the daily Calendar report so that the simplicty of this calendar is easier to recognize. This calendar has been in operation for two full Mars years. It has proven flawless.
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: 049.6 Sol Number: 104 Change in degrees is +.5 Julian date is: J0038104
Solar Longitude: 049.1 Sol Number: 103 Change in degrees is +.4 Julian date is: J0038103
Solar Longitude: 048.7 Sol Number: 102 Change in degrees is +.5 Julian date is: J0038102
#
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: 247,508,840 km [22.1 km/s] Difference is +71561 <= +2982 km/hour at 12 on 02/27 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,437,279 km [22.1 km/s] Difference is +72987 <= +3041 km/hour at 12 on 02/26 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,364,292 km [22.2 km/s] Difference is +74381 <= +3099 km/hour at 12 on 02/25 (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.
=== Mars is in Regular movement as seen from Earth.
HIP 35070 RA 07h 17m 08.0s – more than 72 hours out Day 0 - Day 1 – 2 50 hours out
HIP 35066 RA 07h 15m 03.5s Mars will circle this star on the way back to regular order – Day 2 – 5 Circle is under way – Mars below
PGC 1762783 RA 07h 14m 52.8s – below path 71 hours ahead Day 0 – Day 1 44 ahead – Day 2 – 5 above Mars – save for return
TYC 1913-29-1 RA 07h 15m 55.5s – Day 0 next 52 hours – Day 1 next 27 hours – Day 2 at Mars – Day 3 through 10 past Mars and above
HIP 35333 and HIP 35273 – Day 0 – Day 1 ahead – Day 2 ahead – Day 3 middle Day 4 through 7 past Day 8 out of view on left – save for return
====*====*>>>
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.
Light travel time today is between 6 and 7 minutes. Communications delay would be 12+ minutes round trip.
===
Earth Distance in km: 2025/02/27 127,497,000 (increasing)
Earth Distance in km: 2025/02/26 126,330,000 (increasing)
Earth Distance in km: 2025/02/25 125,013,000 (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.
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 104 is in Month 4 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 4 extends from Sol 85 through 112. <<== There are 28 days in Month 4. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 104 is Friday in the Proposed Business calendar for Mars. Sol 85 was a Skip Day on Mars. Next is near 112 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
Copyright the Mars Society All Rights Reserved
Month 4 of 24 Quarter 1 of 4 [Month 4-6] (This month has 28 Sols)
Online
Like button can go here
place holder for today's Calendar update:
Greenwich, UK 02/28/2025, 13:00:00 Europe/London
Object: Mars (open sky map)
RA 07h 16m 17.3s Dec +25° 51' 52.8" Appar J2000
Mag: -0.27 (Estimated: JPL) Const: Gemini
Sun Dist: 247,579,002 km [22.1 km/s]
Earth Dist: 128,431,105 km [14.0 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
50
Sol number:
105
Online
Like button can go here
===
Today on Mars: 0038/04/21 Saturday Days of the week offset 6 with Earth. (count from Mars to Earth )
Sol 105 Business Month 4
Today on Earth: 2025/02/28 Friday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=
We have received feedback that the elegant simplicity of this CalendarForMars is not obvious. Please help us to modify the daily Calendar report so that the simplicty of this calendar is easier to recognize. This calendar has been in operation for two full Mars years. It has proven flawless.
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: 050.0 Sol Number: 105 Change in degrees is +.4 Julian date is: J0038105
Solar Longitude: 049.6 Sol Number: 104 Change in degrees is +.5 Julian date is: J0038104
Solar Longitude: 049.1 Sol Number: 103 Change in degrees is +.4 Julian date is: J0038103
#
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: 247,579,002 km [22.1 km/s] Difference is +70162 <= +2923 km/hour at 12 on 02/28 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,508,840 km [22.1 km/s] Difference is +71561 <= +2982 km/hour at 12 on 02/27 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,437,279 km [22.1 km/s] Difference is +72987 <= +3041 km/hour at 12 on 02/26 (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.
=== Mars is in Regular movement as seen from Earth.
HIP 35070 RA 07h 17m 08.0s – more than 72 hours out Day 0 - Day 1 – 3 30 hours out
HIP 35066 RA 07h 15m 03.5s Mars will circle this star on the way back to regular order – Day 2 – 6 Circle is under way – Mars below
PGC 1762783 RA 07h 14m 52.8s – below path 71 hours ahead Day 0 – Day 1 44 ahead – Day 2 – 6 above Mars – save for return
TYC 1913-29-1 RA 07h 15m 55.5s – Day 0 next 52 hours – Day 1 next 27 hours – Day 2 at Mars – Day 3 through 11 past Mars and above
HIP 35333 and HIP 35273 – Day 0 – Day 1 ahead – Day 2 ahead – Day 3 middle Day 4 through 7 past Day 8 out of view on left – save for return
====*====*>>>
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.
Light travel time today is between 6 and 7 minutes. Communications delay would be 12+ minutes round trip.
===
Earth Distance in km: 2025/02/28 128,510,000 (increasing)
Earth Distance in km: 2025/02/27 127,497,000 (increasing)
Earth Distance in km: 2025/02/26 126,330,000 (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.
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 105 is in Month 4 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 4 extends from Sol 85 through 112. <<== There are 28 days in Month 4. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 105 is Saturday in the Proposed Business calendar for Mars. Sol 85 was a Skip Day on Mars. Next is near 112 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
Copyright the Mars Society All Rights Reserved
Month 4 of 24 Quarter 1 of 4 [Month 4-6] (This month has 28 Sols)
Online
Like button can go here
Place Holder for today's Calendar Update:
London ENG (GB) 03/01/2025, 13:00:04 Europe/London
Object: Mars (open sky map)
RA 07h 16m 31.9s Dec +25° 49' 36.3" Appar J2000
Mag: -0.24 (Estimated: JPL) Const: Gemini
Sun Dist: 247,647,754 km [22.1 km/s]
Earth Dist: 129,637,013 km [14.2 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
50.4
Sol number:
106
Outlook for today....
GW Johnson has prepared an "Elevator Pitch" / Commercial / Advertisement presentation on his Orbital Course for NSS North Houston.
The presentation was shipped by email on the last day of February, 2025, and it is due to be delivered the Second Saturday of March.
***
A vision of kbd512's Optical Collection Plane deep space exploration vessel is fully formed in my mind, and I am hoping to find a way to create an image that can be shared with NewMars by Sunday evening, ahead of the next Google Meeting.
***
George Dyson's update to his book on his Dad's participation in the Orion fission powered spacecraft is on hand and since it is an easy read, I am hoping to make further progress in reading it.
(th)
Online
Like button can go here
===
Today on Mars: 0038/04/22 Sunday Days of the week offset 6 with Earth. (count from Mars to Earth )
Sol 106 Business Month 4
Today on Earth: 2025/03/01 Saturday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=
We have received feedback that the elegant simplicity of this CalendarForMars is not obvious. Please help us to modify the daily Calendar report so that the simplicty of this calendar is easier to recognize. This calendar has been in operation for two full Mars years. It has proven flawless.
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: 050.4 Sol Number: 106 Change in degrees is +.4 Julian date is: J0038106
Solar Longitude: 050.0 Sol Number: 105 Change in degrees is +.4 Julian date is: J0038105
Solar Longitude: 049.6 Sol Number: 104 Change in degrees is +.5 Julian date is: J0038104
#
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: 247,647,754 km [22.1 km/s] Difference is +58752 <= +2865 km/hour at 12 on 03/01 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,579,002 km [22.1 km/s] Difference is +70162 <= +2923 km/hour at 12 on 02/28 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,508,840 km [22.1 km/s] Difference is +71561 <= +2982 km/hour at 12 on 02/27 (time 12:00) (24 hours)
==*==*==*
Observation: The sky view is ** filled ** with objects and some have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth. The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth. Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.
=== Mars is in Regular movement as seen from Earth.
Next ahead: Star TYC 1913-301-1 RA 07h 16m 32.4s – 93 hours ahead on Day 0 -
HIP 35070 RA 07h 17m 08.0s – more than 72 hours out Day 0 - Day 1 – 3 30 hours out – Day 2 right at Mars
HIP 35066 RA 07h 15m 03.5s Mars will circle this star on the way back to regular order – Day 2 – 7 Circle is under way – Mars below
PGC 1762783 RA 07h 14m 52.8s – below path 71 hours ahead Day 0 – Day 1 44 ahead – Day 2 – 7 above Mars – save for return
TYC 1913-29-1 RA 07h 15m 55.5s – Day 0 next 52 hours – Day 1 next 27 hours – Day 2 at Mars – Day 3 through 12 past Mars and above
HIP 35333 and HIP 35273 – Day 0 – Day 1 ahead – Day 2 ahead – Day 3 middle Day 4 through 7 past Day 8 out of view on left – save for return
====*====*>>>
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.
Light travel time today is between 6 and 7 minutes. Communications delay would be 12+ minutes round trip.
===
Earth Distance in km: 2025/03/01 129,833,000 (increasing)
Earth Distance in km: 2025/02/28 128,510,000 (increasing)
Earth Distance in km: 2025/02/27 127,497,000 (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.
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 106 is in Month 4 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 4 extends from Sol 85 through 112. <<== There are 28 days in Month 4. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 106 is Sunday in the Proposed Business calendar for Mars. Sol 85 was a Skip Day on Mars. Next is near 112 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
Copyright the Mars Society All Rights Reserved
Month 4 of 24 Quarter 1 of 4 [Month 4-6] (This month has 28 Sols)
Online
Like button can go here
Place holder for today's Calendar Update:
London ENG (GB) 03/02/2025, 13:00:04 Europe/London
Object: Mars (open sky map)
RA 07h 16m 50.0s Dec +25° 47' 14.8" Appar J2000
Mag: -0.24 (Estimated: JPL) Const: Gemini
Sun Dist: 247,715,087 km [22.1 km/s]
Earth Dist: 130,855,467 km [14.3 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
50.9
Sol number:
107
Online
Like button can go here
===
Today on Mars: 0038/04/23 Monday Days of the week offset 6 with Earth. (count from Mars to Earth )
Sol 107 Business Month 4
Today on Earth: 2025/03/02 Sunday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=
We have received feedback that the elegant simplicity of this CalendarForMars is not obvious. Please help us to modify the daily Calendar report so that the simplicty of this calendar is easier to recognize. This calendar has been in operation for two full Mars years. It has proven flawless.
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: 050.9 Sol Number: 107 Change in degrees is +.5 Julian date is: J0038107
Solar Longitude: 050.4 Sol Number: 106 Change in degrees is +.4 Julian date is: J0038106
Solar Longitude: 050.0 Sol Number: 105 Change in degrees is +.4 Julian date is: J0038105
#
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: 247,715,087 km [22.1 km/s] Difference is +67333 <= +2806 km/hour at 12 on 03/02 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,647,754 km [22.1 km/s] Difference is +68752 <= +2865 km/hour at 12 on 03/01 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,579,002 km [22.1 km/s] Difference is +70162 <= +2923 km/hour at 12 on 02/28 (time 12:00) (24 hours)
==*==*==*
Observation: The sky view is ** filled ** with objects and some have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth. The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth. Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.
=== Mars is in Regular movement as seen from Earth.
TYC 1913-301-1 RA 07h 16m 32.4s – 93 hours ahead on Day 0 – Day 1 78 ahead
HIP 35070 RA 07h 17m 08.0s – more than 72 hours out Day 0 - Day 1 – 3 30 hours out – Day 3 above Mars
HIP 35066 RA 07h 15m 03.5s Mars will circle this star on the way back to regular order – Day 2 – 8 Circle is under way – Mars below
HIP 35333 and HIP 35273 – Day 0 – Day 1 ahead – Day 2 ahead – Day 3 middle Day 4 through 7 past Day 8 out of view on left – save for return
====*====*>>>
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.
Light travel time today is between 6 and 7 minutes. Communications delay would be 12+ minutes round trip.
===
Earth Distance in km: 2025/03/03 131,028,000 (increasing)
Earth Distance in km: 2025/03/02 129,833,000 (increasing)
Earth Distance in km: 2025/03/01 129,833,000 (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.
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 107 is in Month 4 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 4 extends from Sol 85 through 112. <<== There are 28 days in Month 4. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 107 is Monday in the Proposed Business calendar for Mars. Sol 85 was a Skip Day on Mars. Next is near 112 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
Copyright the Mars Society All Rights Reserved
Month 4 of 24 Quarter 1 of 4 [Month 4-6] (This month has 28 Sols)
Online
Like button can go here
Place holder for today's Calendar update:
London ENG (GB) 03/03/2025, 13:00:04 Europe/London
Object: Mars (open sky map)
RA 07h 17m 11.1s Dec +25° 44' 47.8" Appar J2000
Mag: -0.22 (Estimated: JPL) Const: Gemini
Sun Dist: 247,780,999 km [22.1 km/s]
Earth Dist: 132,085,960 km [14.5 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
51.3
Sol number:
108
Online
Like button can go here
===
Today on Mars: 0038/04/24 Tuesday Days of the week offset 6 with Earth. (count from Mars to Earth )
Sol 108 Business Month 4
Today on Earth: 2025/03/02 Monday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=
We have received feedback that the elegant simplicity of this CalendarForMars is not obvious.
Please help us to modify the daily Calendar report so that the simplicty of this calendar is easier to recognize.
This calendar has been in operation for two full Mars years. It has proven flawless.
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: 051.3 Sol Number: 108 Change in degrees is +.4 Julian date is: J0038108
Solar Longitude: 050.9 Sol Number: 107 Change in degrees is +.5 Julian date is: J0038107
Solar Longitude: 050.4 Sol Number: 106 Change in degrees is +.4 Julian date is: J0038106
#
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: 247,780,999 km [22.1 km/s] Difference is +65912 <= +2746 km/hour at 12 on 03/03 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,715,087 km [22.1 km/s] Difference is +67333 <= +2806 km/hour at 12 on 03/02 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,647,754 km [22.1 km/s] Difference is +68752 <= +2865 km/hour at 12 on 03/01 (time 12:00) (24 hours)
==*==*==*
Observation: The sky view is ** filled ** with objects and some have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth. The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth. Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.
=== Mars is in Regular movement as seen from Earth.
TYC 1913-301-1 RA 07h 16m 32.4s – 93 hours ahead on Day 0 – Day 1 78 ahead – Day 2 40 ahead
HIP 35070 RA 07h 17m 08.0s – more than 72 hours out Day 0 - Day 1 – 3 30 hours out – Day 3-4 above Mars
HIP 35066 RA 07h 15m 03.5s Mars will circle this star on the way back to regular order – Day 2 – 9 Circle is under way – Mars below
HIP 35333 and HIP 35273 – Day 0 – Day 1 ahead – Day 2 ahead – Day 3 middle Day 4 through 7 past Day 8 out of view on left – save for return
====*====*>>>
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.
Light travel time today is between 7 and 8 minutes. Communications delay would be 14+ minutes round trip.
===
Earth Distance in km: 2025/03/03 132,154,000 (increasing)
Earth Distance in km: 2025/03/02 131,028,000 (increasing)
Earth Distance in km: 2025/03/01 129,833,000 (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.
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 108 is in Month 4 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 4 extends from Sol 85 through 112. <<== There are 28 days in Month 4. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 108 is Tuesday in the Proposed Business calendar for Mars. Sol 85 was a Skip Day on Mars. Next is near 112 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
Copyright the Mars Society All Rights Reserved
Month 4 of 24 Quarter 1 of 4 [Month 4-6] (This month has 28 Sols)
Online
Like button can go here
Place holder for today's Calendar update:
London ENG (GB) 03/04/2025, 13:00:00 Europe/London
Object: Mars (open sky map)
RA 07h 17m 34.7s Dec +25° 42' 15.4" Appar J2000
Mag: -0.22 (Estimated: JPL) Const: Gemini
Sun Dist: 247,845,486 km [22.1 km/s]
Earth Dist: 133,327,895 km [14.7 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
51.8
Sol number:
109
Online
Like button can go here
===
Today on Mars: 0038/04/25 Wednesday Days of the week offset 6 with Earth. (count from Mars to Earth )
Sol 109 Business Month 4
Today on Earth: 2025/03/03 Monday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=
We have received feedback that the elegant simplicity of this CalendarForMars is not easy to see from the daily report.
Please help us to modify the daily Calendar report so that the simplicty of this calendar is easier to recognize.
Please see the bottom of the daily report to see the standard 28 day month. There are 20 months of 28 and 4 of 27 Sols.
New Years Eve is long to align with the Astronomical calendar, so Business and Astronomical both start at zero on New Year's Day.
This calendar has been in operation for two full Mars years. It has proven flawless.
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: 051.8 Sol Number: 109 Change in degrees is +.5 Julian date is: J0038109
Solar Longitude: 051.3 Sol Number: 108 Change in degrees is +.4 Julian date is: J0038108
Solar Longitude: 050.9 Sol Number: 107 Change in degrees is +.5 Julian date is: J0038107
#
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: 247,845,486 km [22.1 km/s] Difference is +64487 <= +2687 km/hour at 12 on 03/04 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,780,999 km [22.1 km/s] Difference is +65912 <= +2746 km/hour at 12 on 03/03 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,715,087 km [22.1 km/s] Difference is +67333 <= +2806 km/hour at 12 on 03/02 (time 12:00) (24 hours)
==*==*==*
Observation: The sky view is ** filled ** with objects and some have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth. The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth. Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.
=== Mars is in Regular movement as seen from Earth.
TYC 1913-301-1 RA 07h 16m 32.4s – 93 hours ahead on Day 0 – Day 1 78 ahead – Day 2 40 ahead – Day 3 still ahead
HIP 35070 RA 07h 17m 08.0s – more than 72 hours out Day 0 - Day 1 – 3 30 hours out – Day 3-5 above and past Mars
HIP 35066 RA 07h 15m 03.5s Mars will circle this star on the way back to regular order – Day 2 – 10 Circle is under way – Mars below
HIP 35333 and HIP 35273 – Day 0 – Day 1 ahead – Day 2 ahead – Day 3 middle Day 4 through 7 past Day 8 out of view on left – save for return
====*====*>>>
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.
Light travel time today is between 7 and 8 minutes. Communications delay would be 14+ minutes round trip.
===
Earth Distance in km: 2025/03/04 133,537,000 (increasing)
Earth Distance in km: 2025/03/03 132,154,000 (increasing)
Earth Distance in km: 2025/03/02 131,028,000 (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.
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 109 is in Month 4 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 4 extends from Sol 85 through 112. <<== There are 28 days in Month 4. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 109 is Wednesday in the Proposed Business calendar for Mars. Sol 85 was a Skip Day on Mars. Next is near 112 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
Copyright the Mars Society All Rights Reserved
Month 4 of 24 Quarter 1 of 4 [Month 4-6] (This month has 28 Sols)
Online
Like button can go here
Place holder for today's Calendar update:
London ENG (GB) 03/05/2025, 13:00:04 Europe/London
Object: Mars (open sky map)
RA 07h 18m 01.3s Dec +25° 39' 38.0" Appar J2000
Mag: -0.18 (Estimated: JPL) Const: Gemini
Sun Dist: 247,908,553 km [22.1 km/s]
Earth Dist: 134,580,920 km [14.9 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
52.2
Sol number:
110
Online
Like button can go here
===
Today on Mars: 0038/04/26 Thursday Days of the week offset 6 with Earth. (count from Mars to Earth )
Sol 110 Business Month 4
Today on Earth: 2025/03/05 Wednesday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*====*==
We have received feedback that the elegant simplicity of this CalendarForMars is not easy to see from the daily report.
Please help us to modify the daily Calendar report so that the simplicty of this calendar is easier to recognize.
Please see the bottom of the daily report to see the standard 28 day month. There are 20 months of 28 and 4 of 27 Sols.
New Years Eve is long to align with the Astronomical calendar, so Business and Astronomical both start at zero on New Year's Day.
This calendar has been in operation for two full Mars years. It has proven flawless.
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: 052.4 Sol Number: 110 Change in degrees is +.4 Julian date is: J0038110
Solar Longitude: 051.8 Sol Number: 109 Change in degrees is +.5 Julian date is: J0038109
Solar Longitude: 051.3 Sol Number: 108 Change in degrees is +.4 Julian date is: J0038108
#
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: 247,908,553 km [22.1 km/s] Difference is +63067 <= +2628 km/hour at 12 on 03/05 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,845,486 km [22.1 km/s] Difference is +64487 <= +2687 km/hour at 12 on 03/04 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,780,999 km [22.1 km/s] Difference is +65912 <= +2746 km/hour at 12 on 03/03 (time 12:00) (24 hours)
==*==*==*
Observation: The sky view is ** filled ** with objects and some have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth. The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth. Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.
=== Mars is in Regular movement as seen from Earth.
Next ahead: Galaxy PGC 20584 Day 0 50 hours
TYC 1913-301-1 RA 07h 16m 32.4s – 93 hours ahead on Day 0 – Day 1 78 ahead – Day 2 40 ahead – Day 3 still ahead – Day 4 just above Mars
HIP 35070 RA 07h 17m 08.0s – more than 72 hours out Day 0 - Day 1 – 3 30 hours out – Day 3-6 above and past Mars
HIP 35333 and HIP 35273 – Day 0 – Day 1 ahead – Day 2 ahead – Day 3 middle Day 4 through 7 past Day 8 out of view on left – save for return
====*====*>>>
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.
Light travel time today is between 7 and 8 minutes. Communications delay would be 14+ minutes round trip.
===
Earth Distance in km: 2025/03/05 134,741,000 (increasing)
Earth Distance in km: 2025/03/04 133,537,000 (increasing)
Earth Distance in km: 2025/03/03 132,154,000 (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.
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 110 is in Month 4 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 4 extends from Sol 85 through 112. <<== There are 28 days in Month 4. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 110 is Thursday in the Proposed Business calendar for Mars. Sol 85 was a Skip Day on Mars. Next is near 112 of Year 38 (alignment due)
##
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
Copyright the Mars Society All Rights Reserved
Month 4 of 24 Quarter 1 of 4 [Month 4-6] (This month has 28 Sols)
Online
Like button can go here
Place holder for today's Calendar update:
Greenwich, UK 03/06/2025, 13:02:15 Europe/London
Object: Mars (open sky map)
RA 07h 18m 30.4s Dec +25° 36' 54.3" Appar J2000
Mag: -0.18 (Estimated: JPL) Const: Gemini
Sun Dist: 247,970,281 km [22.1 km/s]
Earth Dist: 135,846,294 km [15.1 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
52.7
Sol number:
111
Online
Like button can go here
===
Today on Mars: 0038/04/27 Friday Days of the week offset 6 with Earth. (count from Mars to Earth )
Sol 111 Business Month 4
Today on Earth: 2025/03/06 Thursday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*====*==
To see how this calendar works, you can see the standard 28 day month at the bottom of this daily report.
There are 20 months of 28 Sols and 4 of 27 Sols at the end of the four six month quarters.
New Years Eve is extended to align the Business Calendar for Mars with the Astronomical calendar.
Business and Astronomical both start at zero (to the nanosecond) on New Year's Day.
This calendar has been in operation for two full Mars years.
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: 052.7 Sol Number: 111 Change in degrees is +.5 Julian date is: J0038111
Solar Longitude: 052.2 Sol Number: 110 Change in degrees is +.4 Julian date is: J0038110
Solar Longitude: 051.8 Sol Number: 109 Change in degrees is +.5 Julian date is: J0038109
#
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: 247,970,281 km [22.1 km/s] Difference is +61728 <= +2572 km/hour at 12 on 03/06 (time 12:02) (24:02 hours)
Distance: Mars >> Sun per theskylive.com: 247,908,553 km [22.1 km/s] Difference is +63067 <= +2628 km/hour at 12 on 03/05 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 247,845,486 km [22.1 km/s] Difference is +64487 <= +2687 km/hour at 12 on 03/04 (time 12:00) (24 hours)
==*==*==*
Observation: The sky view is ** filled ** with objects and some have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth. The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth. Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.
=== Mars is in Regular movement as seen from Earth.
Galaxy PGC 20584 Day 0 50 hours Day 0 – Day 1 27 ahead
TYC 1913-301-1 RA 07h 16m 32.4s – 93 hours ahead on Day 0 – Day 1 78 ahead – Day 2 – Day 4 just above Mars Day 5 – 5 past and still visible
HIP 35070 RA 07h 17m 08.0s – more than 72 hours out Day 0 - Day 1 – 3 30 hours out – Day 3-7 above and past Mars (last day)
HIP 35333 and HIP 35273 – Day 0 – Day 1 ahead – Day 2 ahead – Day 3 middle Day 4 through 7 past Day 8 out of view on left – save for return
====*====*>>>
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.
Light travel time today is between 7 and 8 minutes. Communications delay would be 14+ minutes round trip.
===
Earth Distance in km: 2025/03/06 135.963,000 (increasing)
Earth Distance in km: 2025/03/05 134,741,000 (increasing)
Earth Distance in km: 2025/03/04 133,537,000 (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.
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 111 is in Month 4 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 4 extends from Sol 85 through 112. <<== There are 28 days in Month 4. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 111 is Friday in the Proposed Business calendar for Mars. Sol 85 was a Skip Day on Mars. Next is near 112 of Year 38 (alignment due)
##
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
Copyright the Mars Society All Rights Reserved
Month 4 of 24 Quarter 1 of 4 [Month 4-6] (This month has 28 Sols)
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Place holder for today's Calendar update:
Greenwich, UK 03/07/2025, 13:00:00 Europe/London
Object: Mars (open sky map)
RA 07h 19m 02.5s Dec +25° 34' 06.5" Appar J2000
Mag: -0.15 (Estimated: JPL) Const: Gemini
Sun Dist: 248,030,389 km [22.1 km/s]
Earth Dist: 137,117,762 km [15.3 km/s]
Martian Year:
38
Martian Astronomical Month:
2
Solar longitude Ls:
53.1
Sol number:
112
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