Re: Two old UNIDs on six images.

From: Björn Gimle via Seesat-l <seesat-l_at_satobs.org>
Date: Thu, 15 Sep 2016 22:42:24 +0200
I would like to renew my plea for assistance on these old observations - I
am sure the photographer would be as happy as I to get a good answer.

There is now also a mystery of my own. On the evening of Sep 14 I attempted
to capture a NOSS 7 object, but failed.
The images were out of focus, but still a nice variable track showed up in
three consecutive shot, and they don't show in my HeavenSat with today's
classfd+SpaceTrack files.
The first track is partly outside image edge, the last may even be entering
shadow.
To be able to post images I reduced them to B/W .png files.
The first one was even converted BEFORE sending all three to astrometry.net,
where they were quickly solved, and I could downlod .fits files to
determine start+end track RA/Dec.

89758 16 758A   5919 G 20160914201820000 18 25 2045400+642990 55 R
89758 16 758A   5919 G 20160914201828000 18 25 2057600+624440 55 R
89758 16 758A   5919 G 20160914201843000 18 25 2126700+583190 55 R
89758 16 758A   5919 G 20160914201851000 18 25 2144200+550810 55 R
89758 16 758A   5919 G 20160914201903000 18 25 2203700+503370 55 R
89758 16 758A   5919 G 20160914201911000 18 25 2214640+470300 55 R


--------------------------------------------------------
Björn Gimle, COSPAR 5919
59.2617 N, 18.6169 E, 51 m
Satellite observation formats described:
http://www.satobs.org/position/IODformat.html
---------------------------------------------------------

2016-09-08 23:05 GMT+02:00 Björn Gimle <bjorn.gimle_at_gmail.com>:

> I was alerted to a nice sequence of  8 images (last two containing only
> one of the two objects), both with low angular speed. One is flashing
> smoothly, with a period of about 85s, the other steady.
>
> With astrometry.net converting a composite image to FITS format I
> obtained the following IOD positions:
> 88888 13 792A   9919 G 20130929205924000 48 25 0033350+375400 55 E
> 88889 13 792B   9919 G 20130929205924000 48 25 0033350+375400 55 E
> 88888 13 792A   9919 G 20130929210725000 18 25 0048850+423000 55 S
> 88889 13 792B   9919 G 20130929210725000 18 25 0053480+405000 55 S
> but I find no good match with elsets from 2013-09-25 (SpaceTrack) and
> 09-25 (Mike McCants)
>
> The pseudo site 9919 is "9919 AsN 59.49 17.35  40.  AstroNet bjorsa
> Enköping" in my STATIONS.IN
> Using Scott Campbell's ELFIND.5 to get circular fits I obtained orbits at
> about 20000 km range:
> Molniya type
> 1 88888U 13 729B  13272.88015046 0.00000073  00000-0  50000-4 0    09
> 2 88888  67.9503 341.1566 0002564 281.5879 130.7766  2.13276021    09
> NavStar type
> 1 88889U 13 729B  13272.88015046 0.00000073  00000-0  50000-4 0    00
> 2 88889  55.5560 323.8155 0002158 277.8411 142.4063  2.00542241    08
> They can certainly be improved, at least using more reasonable i and e for
> object 88888 !
>
> My image files can be posted on the web, or e-mailed, on request, but
> originals (with IPTC info) are available on
> http://astronet.se/phpBB3/download/file.php?id=4917&sid=
> 412ee45be5f699806d361d05095cfc86&mode=view
> ...
> http://astronet.se/phpBB3/download/file.php?id=4910&sid=
> 412ee45be5f699806d361d05095cfc86&mode=view
> and the entire (swedish) conversation on http://astronet.se/phpBB3/
> viewtopic.php?t=13761
>
>
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Received on Thu Sep 15 2016 - 15:43:05 UTC

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