Re: Likely Tieanwen-1 fuel dump observed.

From: Scott Tilley via Seesat-l <seesat-l_at_satobs.org>
Date: Sat, 25 Jul 2020 18:54:42 -0700
A group of amateurs are tracking Tianwen 1 on X-band.

https://twitter.com/df2mz/status/1287012706558578689

Using their timed positional observations a solar orbit should be able 
to be obtained at some point.  Perhaps this software could be used.

https://www.projectpluto.com/find_orb.htm

Regards,

Scott Tilley


On 2020-07-25 4:07 p.m., Michael R Thompson via Seesat-l wrote:
> Hi Denise,
>
> Based on the ephemerides for the departure located here:
> https://www.projectpluto.com/pluto/mpecs/tianwea.htm
>
>  From the view of Pensacola, Tianwen 1 would have indeed passed through the southern part of Aquarius shortly after the injection burn on July 23rd.
>
> My knowledge of satellites is orders of magnitude better than that of astronomy, but if I'm identifying the stars in the image correctly, I'd say it's a good match for shortly after 6:00 UTC.
>
> I'll also say r.e. speculation on the forum, the TLEs aren't being withheld due to any sort of political reasons, TLEs just aren't made to describe ephemerides for non-Earth orbiting objects.
>
> Thanks,
> Michael
> ________________________________
> From: Seesat-l <seesat-l-bounces+thomp376=purdue.edu_at_satobs.org> on behalf of Denise Moser via Seesat-l <seesat-l_at_satobs.org>
> Sent: Saturday, July 25, 2020 5:42 PM
> To: SeeSat-L_at_satobs.org <SeeSat-L_at_satobs.org>
> Subject: Likely Tieanwen-1 fuel dump observed.
>
> I was wondering whether anyone here could move that from likely to
> probable.
>
> I didn't observe it, but someone posting in my astronomy society (Kansas
> City) group posted an image locally and someone in Pensacola posted it on
> Cloudy Nights.
> https://www.cloudynights.com/topic/719018-what-in-the-world-did-i-see-in-aquarius-tonight/?hl=%2Bfuel+%2Bdump#entry10362428
> No TLEs available, even though it has been designated 2020-49A & B & ?  and
> 45935 per wikipedia.
> I found some radio guys and a British observatory twittering about
> it--including images of simliar from the Emirates Mars Mission. Then one by
> Bill Gray (on this list!) leading me to a simulation that I can't quite
> run--I'll have to work on that.  Still it has rekindled my interest in the
> satellites!
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Received on Sat Jul 25 2020 - 20:55:57 UTC

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