Re: Fwd: Would Like People To Try To Track Decaying Uncataloged Object

From: Scott Tilley via Seesat-l <seesat-l_at_satobs.org>
Date: Thu, 4 May 2017 21:35:38 -0700
Hi Charles

Not long ago Cees Bassa and I monitored the decay of Unknown 040208,
90020/04539A by using its S-band beacon.  90020 was in molniya orbit and
believed to be an old SDS mission.

Here's a brief summary of the event that I posted to Twitter.

https://twitter.com/coastal8049/status/820112648222044161

Another good tale about reentries of eccentric objects is that tale of
AO-13.

http://www.amsat.org/articles/g3ruh/122.html

Here's a tale of amateur visual observations leading to the
identification of mysterious space debris from HEO.  I made those
observations during a routine session and Mike McCants put two and two
together after I reported an UNID.

https://www.forbes.com/sites/fayeflam/2015/11/23/amateur-astronomers-solve-mystery-of-unidentified-fireball-and-weird-space-junk-found-in-spain/#86bd9ad4b93f

You're not alone :-)

Regards,

Scott







On 05/03/2017 09:41 AM, Charles Phillips via Seesat-l wrote:
> All -
>
> Here is a request that perhaps might be fun. Object 90059 is possibly a Centaur and is decaying from a geosynchronous transfer orbit. Inclination is 28.66 degrees - came from Cape Canaveral no doubt. Perigee is approximately 310 km so it is not long for this world; perigee is over the South Pacific unfortunately.
>
> I am told by reliable people that the object is tracked by ISON but the epoch is 2017 day 20. People might be able to track it from Europe, near apogee, or New Zealand near perigee.
>
> After doing much research I cannot find anyone who is predicting reentries for these lonely uncatalogued objects, it seems that they should be retired with dignity as well. Certainly the JSpOC will not alert anyone to this reentry.
>
> I have a ground trace on my Twitter feed and anyone can get the TLE from the usual sources and run predictions themselves. Of course this one is NOT on space-track.org
>
> Thanks for any help you can give and please let me know if you have any questions. I have exchanged email with Ted Molczan and some of the other usual suspects as you might expect.
>
> Charles Phillips
> Spaceflight Research, LLC
> Houston, Texas
> 713-882-4578
>
> https://twitter.com/SpacefltResrch
> _at_SpacefltResrch
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Received on Thu May 04 2017 - 23:36:20 UTC

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