Re: Slow Moving Object observed in (UK?)

Guy M Hurst (guy@tahq.demon.co.uk)
Tue, 30 Sep 1997 20:45:46 +0100

In message <875507966.052528.0@angel.algonet.se>, Bjoern Gimle
<b_gimle@algonet.se> writes
>Indeed it does. The position of Milstar (and most other geostationary
>satellites at other times) agrees well within the +/-0.05 degree accuracy
>of the report.
>
>I used 50.6 N, 2.0 W, estimated from a map.
>
>The time of the July observation is 3 minutes late, wrt. Rainer's elset,
>and I don't have a later one. If your prediction for Sept.25 is correct,
>it is about 23 minutes late (but OK in Decl.), and a corrected elset would be:
>
>mod.Milstar 2                                    35839 x 35743 km
>1 23712U 95 60  A 97145.00000000  .00000000  00000-0  00000+0 0    03
>2 23712   2.9693 293.5913 0011385  21.1609 292.0014  1.00257700    05
>
>This makes it 4 minutes EARLY on July 5, but it is an acceptable error
>if we want to get reasonably correct predictions for late September.
>(And if your Sept.25 prediction is correct, and the same satellite)
>The non-linearity can be caused by perturbations, particularly orbit
>adjustments. 
>------------------------------------------------------------
>-- b_gimle@algonet.se              +46-8-7428086  (home)  --
>-- 59.22371 N, 18.22857 E, 44 m     AND member of :       --
>-- http://www.algonet.se/~b_gimle   SeeSat-L              --
>-- bjorn@tt-tech.se                +46-8-59095783 (office)--
>------------------------------------------------------------
>
Dear Bjoern,
Thank you very much for this valuable feedback on our query which I will
relay to the observer.
Regards,
Guy
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