Re: fast moving bright unid

From: C. Bassa via Seesat-l <seesat-l_at_satobs.org>
Date: Mon, 8 Sep 2014 10:46:43 +0200
Hi Kevin,

Thanks for sending me your video. I am pretty sure that you observed
USA 186 [28888/05042A]!

Alberto Rango last saw it in June when it appeared to have manouvred
after having spent a few months in some sort of transfer orbit that
was precessing its plane West.

Your observations suggest that a manouvre did indeed take place as the
plane of your unknown does not match the predictions of the transfer
orbit. In fact, it appears the possible manouvre at the beginning of
June changed the orbit back to a Sun synchronous one, and lowering the
apogee quite significantly.

From your video I measured the observations below and obtain the
following orbit:
1 28888U 05042A   14251.01118996  .00000000  00000-0  50000-4 0    05
2 28888  96.8741 288.6690 0135326 359.5988  44.7391 15.72278523    07
# 20140908.01-20140908.01, 21 measurements, 0.004 deg rms

Hopefully this orbit is accurate enough to recover it tonight.

Regards,
    Cees

28888 05 042A   1775 G 20140908001541921 17 25 2242925+095106 37 S
28888 05 042A   1775 G 20140908001542822 17 25 2244105+102138 37 S
28888 05 042A   1775 G 20140908001543823 17 25 2245427+105460 37 S
28888 05 042A   1775 G 20140908001544824 17 25 2246783+112807 37 S
28888 05 042A   1775 G 20140908001545825 17 25 2248178+120227 37 S
28888 05 042A   1775 G 20140908001546826 17 25 2249583+123641 37 S
28888 05 042A   1775 G 20140908001547827 17 25 2250987+131066 37 S
28888 05 042A   1775 G 20140908001548761 17 25 2252316+134324 37 S
28888 05 042A   1775 G 20140908001604310 17 25 2317541+230178 37 S
28888 05 042A   1775 G 20140908001604844 17 25 2318471+232138 37 S
28888 05 042A   1775 G 20140908001605845 17 25 2320310+235819 37 S
28888 05 042A   1775 G 20140908001606846 17 25 2322169+243497 37 S
28888 05 042A   1775 G 20140908001607847 17 25 2324070+251164 37 S
28888 05 042A   1775 G 20140908001608848 17 25 2325970+254852 37 S
28888 05 042A   1775 G 20140908001609849 17 25 2327914+262530 37 S
28888 05 042A   1775 G 20140908001610850 17 25 2329878+270194 37 S
28888 05 042A   1775 G 20140908001622862 17 25 2355669+341162 37 S
28888 05 042A   1775 G 20140908001623863 17 25 2357987+344629 37 S
28888 05 042A   1775 G 20140908001629869 17 25 0012629+380627 37 S
28888 05 042A   1775 G 20140908001630820 17 25 0014993+383722 37 S
28888 05 042A   1775 G 20140908001631704 17 25 0017278+390478 37 S
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Received on Mon Sep 08 2014 - 08:46:43 UTC

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