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Tianwen-1 At Mars
Greenish
post Feb 8 2021, 03:04 PM
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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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Quetzalcoatl
post Feb 15 2021, 06:58 PM
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Hello everybody,

Tianwen-1 was now to perform a manoeuvre to move from its equatorial insertion orbit to a polar orbit with the objective of establishing a map of the Martian surface that will be used for the selection of the landing site.

https://twitter.com/guo_linli/status/1361114922277425153

TianWen-1 successfully carried out this maneuver smile.gif :

https://twitter.com/guo_linli/status/1361277655069327364
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Guest_Steve5304_*
post Feb 18 2021, 09:26 PM
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QUOTE (Quetzalcoatl @ Feb 15 2021, 07:58 PM) *
Hello everybody,

Tianwen-1 was now to perform a manoeuvre to move from its equatorial insertion orbit to a polar orbit with the objective of establishing a map of the Martian surface that will be used for the selection of the landing site.

https://twitter.com/guo_linli/status/1361114922277425153

TianWen-1 successfully carried out this maneuver smile.gif :

https://twitter.com/guo_linli/status/1361277655069327364


This is really cool.

Im so excited to see where China decides to put the lander down
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Posts in this topic
- Greenish   Tianwen-1 At Mars   Feb 8 2021, 03:04 PM
- - Huguet   Daniel Estévez (Twitter) @ea4gpz "Acqusition ...   Feb 10 2021, 01:26 PM
- - Greenish   Orbital insertion confirmed. CASC says landing att...   Feb 10 2021, 01:38 PM
- - MERovingian   And another one! Mars is a spoiled planet...   Feb 10 2021, 02:05 PM
- - Huguet   Interesting is the enormous numbers of firsts for ...   Feb 10 2021, 04:27 PM
- - nprev   This will be the general thread for orbital operat...   Feb 10 2021, 04:45 PM
- - Huguet   "At ~13:14:20 UTC #Tianwen-1 switched from Lo...   Feb 11 2021, 09:52 AM
- - Steve G   Hopefully, they might be able to get a peek at neg...   Feb 11 2021, 12:58 PM
- - neo56   Amazing video taken by one of Tianwen-1 camera dur...   Feb 12 2021, 11:10 AM
|- - rlorenz   QUOTE (neo56 @ Feb 12 2021, 06:10 AM) Ama...   Feb 12 2021, 11:53 PM
- - Huguet   Congrats CASC,... continue sending every raw foota...   Feb 12 2021, 12:21 PM
- - neo56   I did some quick image processing on screenshots o...   Feb 12 2021, 09:27 PM
- - Antdoghalo   Congrats to the Chinese for being number 6 to ente...   Feb 12 2021, 10:30 PM
- - Huguet   Wonderfull views of Mars overlapped by tianwen-1, ...   Feb 12 2021, 11:07 PM
- - fredk   I couldn't see anywhere by what factor those c...   Feb 13 2021, 12:22 AM
- - Ron Hobbs   Planetary Society's Tianwen-1 page has it on V...   Feb 14 2021, 04:54 PM
- - Quetzalcoatl   Hello everybody, Tianwen-1 was now to perform a m...   Feb 15 2021, 06:58 PM
|- - Steve5304   QUOTE (Quetzalcoatl @ Feb 15 2021, 07:58 ...   Feb 18 2021, 09:26 PM
- - kenny   Tianwen-1's orbit has been adjusted further. ...   Mar 2 2021, 09:45 AM
- - SulliedGoon   Will we see orbital pictures from NASA of the even...   Mar 2 2021, 11:09 AM
|- - Quetzalcoatl   QUOTE (SulliedGoon @ Mar 2 2021, 12:09 PM...   Mar 4 2021, 08:47 AM
|- - mcaplinger   QUOTE (Quetzalcoatl @ Mar 4 2021, 12:47 A...   Mar 4 2021, 04:16 PM
|- - Quetzalcoatl   QUOTE (mcaplinger @ Mar 4 2021, 05:16 PM)...   Mar 15 2021, 06:04 PM
- - Hungry4info   LRO has imaged each of the landed Chang'e miss...   Mar 2 2021, 12:46 PM
|- - mcaplinger   QUOTE (Hungry4info @ Mar 2 2021, 04:46 AM...   Mar 2 2021, 04:08 PM
- - Hungry4info   From https://weibo.com/5386897742/K4AVS2zt8?ssl_.....   Mar 4 2021, 02:16 AM
- - Explorer1   Is the low sun angle why the polar cap isn't b...   Mar 4 2021, 02:43 AM
|- - mcaplinger   QUOTE (Explorer1 @ Mar 3 2021, 06:43 PM) ...   Mar 4 2021, 05:59 AM
|- - JRehling   QUOTE (Explorer1 @ Mar 3 2021, 07:43 PM) ...   Mar 4 2021, 05:04 PM
- - Phil Stooke   The high resolution image with the small cones on ...   Mar 4 2021, 07:44 AM
- - Huguet   New Photos from medium-res camera. Detail of mars ...   Mar 26 2021, 11:23 AM
- - kymani76   Map of Tianwen-1 landing site in Utopia Planitia...   Apr 4 2021, 10:59 AM
- - kymani76   A close-up of the central area. Once the mappin...   Apr 4 2021, 11:01 AM
|- - Art Martin   QUOTE (kymani76 @ Apr 4 2021, 04:01 AM) ...   Apr 5 2021, 03:40 AM
- - Phil Stooke   Very nice maps! Once we are safely down I wil...   Apr 4 2021, 09:37 PM
- - Antdoghalo   There are also a lot of pseudocones and lava wrink...   Apr 5 2021, 10:27 AM
|- - john_s   Given the size of the landing ellipse, there's...   Apr 5 2021, 02:56 PM
- - djellison   Yeah - the landing ellipse is almost certainly lar...   Apr 5 2021, 03:18 PM
- - kymani76   I guess there are many uncertainties, but this map...   Apr 5 2021, 08:46 PM
- - kenny   Apollo 12 in 1969 was trying to land close to the ...   Apr 19 2021, 04:45 PM
- - kenny   Apollo 12 in 1969 was trying to land close to the ...   Apr 19 2021, 07:07 PM
|- - tdemko   QUOTE (kenny @ Apr 19 2021, 02:07 PM) Apo...   Apr 20 2021, 07:32 PM
- - Huguet   We are entering the week distance window of the es...   May 10 2021, 02:31 PM
|- - tolis   I don't think the entry module will be "d...   May 12 2021, 10:11 AM
|- - Nordren   QUOTE (Huguet @ May 10 2021, 05:31 PM) An...   May 13 2021, 01:23 PM
|- - Huguet   QUOTE (Nordren @ May 13 2021, 10:23 AM) C...   May 13 2021, 01:31 PM
|- - Nordren   QUOTE (Huguet @ May 13 2021, 04:31 PM) I ...   May 13 2021, 01:48 PM
- - Huguet   Indeed not less than 200km at periapsis. Timing fo...   May 12 2021, 10:33 AM
- - Huguet   Finally a date, not direct from CAST, but by a sou...   May 13 2021, 10:03 AM
- - Huguet   The Zhurong will use the same navigation technolog...   May 13 2021, 11:43 AM
|- - stevesliva   QUOTE (Huguet @ May 13 2021, 06:43 AM) Th...   May 13 2021, 03:15 PM
|- - Huguet   QUOTE (stevesliva @ May 13 2021, 12:15 PM...   May 13 2021, 03:23 PM
- - Huguet   "Communication before (land) would be handled...   May 13 2021, 11:49 AM
|- - ollopa   QUOTE (Huguet @ May 13 2021, 01:49 PM) Ne...   May 13 2021, 11:13 PM
- - Phil Stooke   Non-Fungible Token - I can't explain it other ...   May 13 2021, 11:54 PM
|- - Steve5304   QUOTE (Phil Stooke @ May 13 2021, 11:54 P...   May 15 2021, 02:33 AM
- - Hungry4info   Think of NFT's like ownership rights of artwor...   May 14 2021, 12:50 AM
- - nprev   Based on the Twitter feed linked to by Huguet, it ...   May 14 2021, 05:07 AM
- - marsophile   Landed Successfully! https://spaceflightnow.c...   May 15 2021, 02:48 AM
- - Steve5304   I cant find much information on the instrument loa...   May 15 2021, 04:30 AM
|- - marsophile   QUOTE (Steve5304 @ May 14 2021, 08:30 PM)...   May 15 2021, 06:14 AM
|- - nogal   QUOTE (Steve5304 @ May 15 2021, 05:30 AM)...   May 15 2021, 05:37 PM
- - Hungry4info   Wow! Tianwen-1 observed from a deployed sub-sa...   Jan 1 2022, 01:04 AM
|- - Huguet   QUOTE (Hungry4info @ Dec 31 2021, 10:04 P...   Jan 1 2022, 01:45 PM
- - Phil Stooke   Very cool indeed! The website linked to by An...   Jan 1 2022, 02:30 AM
- - Paolo   the Chinese journal Scientia Sinica Technologica h...   Mar 12 2022, 09:12 AM
|- - vikingmars   QUOTE (Paolo @ Mar 12 2022, 10:12 AM) the...   Mar 13 2022, 06:02 AM
- - Phil Stooke   https://twitter.com/AJ_FI/status/15049059648179814...   Mar 18 2022, 10:55 PM
|- - Huguet   QUOTE (Phil Stooke @ Mar 18 2022, 07:55 P...   Mar 22 2022, 10:38 AM
|- - Huguet   QUOTE (Huguet @ Mar 22 2022, 07:38 AM) Im...   Mar 22 2022, 03:10 PM
|- - vikingmars   QUOTE (Huguet @ Mar 22 2022, 04:10 PM) In...   Mar 23 2022, 12:18 PM
|- - Huguet   QUOTE (vikingmars @ Mar 23 2022, 09:18 AM...   Mar 24 2022, 11:15 AM
- - Phil Stooke   Two details, enlarged and contrast-enhanced. I wi...   Mar 18 2022, 11:01 PM
- - Bill Harris   That whole HiRISE section is amazing. I look forw...   Mar 20 2022, 06:10 AM
- - Phil Stooke   Check out this article: https://news.sina.com.cn/...   Mar 24 2022, 07:16 AM
|- - vikingmars   QUOTE (Phil Stooke @ Mar 24 2022, 08:16 A...   Mar 24 2022, 10:37 AM
- - Phil Stooke   This open-access paper: https://mdpi-res.com/d_at...   Mar 29 2022, 11:48 PM
- - Bill Harris   Nice images, Huguet. I wonder why the ground alo...   Mar 30 2022, 01:29 AM
|- - Huguet   QUOTE (Bill Harris @ Mar 29 2022, 10:29 P...   Mar 31 2022, 04:57 PM
- - Phil Stooke   An update tweeted by Andrew Jones: https://twitte...   May 6 2022, 06:56 PM
- - Phil Stooke   This is the new surface image roughly projected fo...   May 6 2022, 07:31 PM
|- - Huguet   QUOTE (Phil Stooke @ May 6 2022, 04:31 PM...   May 10 2022, 01:56 PM
- - Phil Stooke   The early rock might have been weathered on the su...   May 10 2022, 05:21 PM
- - Hungry4info   Sun Zezhou, chief designer of Tianwen-1, delivered...   Jun 20 2022, 03:21 PM
- - Phil Stooke   Here is a good open access paper on rover mapping:...   Jun 26 2022, 07:30 AM
|- - vikingmars   QUOTE (Phil Stooke @ Jun 26 2022, 09:30 A...   Jun 27 2022, 07:11 PM
- - Hungry4info   Some new images from Tianwen-1.   Jun 29 2022, 12:06 PM
- - Phil Stooke   This tweet from Andrew Jones shows a surface image...   Jun 29 2022, 07:45 PM
|- - Huguet   QUOTE (Phil Stooke @ Jun 29 2022, 04:45 P...   Jul 1 2022, 09:26 AM
- - Bill Harris   Interesting! Rather a miniature version of t...   Jul 1 2022, 12:02 PM
- - serpens   To me it looks like erosion of an armored dune, or...   Jul 2 2022, 09:43 AM
|- - rlorenz   QUOTE (serpens @ Jul 2 2022, 05:43 AM) To...   Jul 2 2022, 01:51 PM
- - Bill Harris   Likely explanation, rlorenz. The Racetrack playa...   Jul 8 2022, 06:09 PM
- - Phil Stooke   How about an alternative to the wind? A crater fo...   Jul 8 2022, 07:27 PM
- - Huguet   One thing for shure.... Zhurong Team from casc/cs...   Jul 8 2022, 11:01 PM
- - Hungry4info   This is the thread for the orbiter, isn't it? ...   Jul 9 2022, 12:33 AM
- - nprev   ADMIN MODE: Noted. The discussion here evolved a b...   Jul 9 2022, 08:27 AM
- - Hungry4info   Tianwen-1 has snapped a pic of Phobos. (source he...   Jul 23 2022, 05:24 AM
- - Phil Stooke   http://jdse.bit.edu.cn/sktcxb/cn/article/d....2096...   Mar 5 2023, 08:31 AM
- - Phil Stooke   Guo, X., Yan, J.G., Yang, X., Liu, L., Chen, Y.H.,...   Mar 6 2023, 08:37 AM
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