Tianwen-1 At Mars |
Tianwen-1 At Mars |
Feb 8 2021, 03:04 PM
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#1
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Member Group: Members Posts: 219 Joined: 14-November 11 From: Washington, DC Member No.: 6237 |
For those who haven't already seen, there is excellent work independently tracking and predicting the trajectory of Tianwen-1 by radio amateurs (using that word only technically, since they are very much pros).
The latest is predicting orbital insertion at 8 seconds before 1200 UTC on Wednesday 10 February, with a 386 km periapsis - burn starts a few minutes before that if you, like me, are planning your peanut consumption carefully this week. Plenty of details to be found at these links (even a GMAT script and Jupyter notebook, and some doppler data, for the astrodynamically inclined). https://destevez.net/tag/tianwen/ Daniel Estévez recent twitter thread with MOI images Scott Tilley recent twitter thread |
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Mar 2 2021, 11:09 AM
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#2
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Newbie Group: Members Posts: 15 Joined: 24-July 11 From: Cumberland Plateau Member No.: 6084 |
Will we see orbital pictures from NASA of
the eventual landing or does the ban on cooperation extend to even passive activities such as imaging from orbit? |
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Mar 4 2021, 08:47 AM
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#3
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Member Group: Members Posts: 104 Joined: 3-February 20 From: Paris (France) Member No.: 8747 |
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Mar 4 2021, 04:16 PM
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#4
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Senior Member Group: Members Posts: 2517 Joined: 13-September 05 Member No.: 497 |
I don't think the ban on cooperation extends also to innocent espionage activities. Not sure what point you're trying to make. To image during the landing, the MRO team would have to know the time and place weeks or months in advance, adjust the spacecraft's orbit, and plan the images. If CNSA doesn't make that information public on that timescale, it's not happening. Post-landing imaging might be easier if there was some information about where to look. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Mar 15 2021, 06:04 PM
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#5
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Member Group: Members Posts: 104 Joined: 3-February 20 From: Paris (France) Member No.: 8747 |
Not sure what point you're trying to make. To image during the landing, the MRO team would have to know the time and place weeks or months in advance, adjust the spacecraft's orbit, and plan the images. If CNSA doesn't make that information public on that timescale, it's not happening. Post-landing imaging might be easier if there was some information about where to look. Of course. I have never said that we could see such images but simply that a cooperation ban is completely foreign to that. |
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