Tony Beresford posted: >19,900 and less than 35,000 km. The only objects come to mind are the >sirius1,2,3 geosynchronous comsats in 63 degree orbits. >Perhaps somebody will calculate an orbit from the observations I did some work on this which I have now discarded. :-) Then I finally noticed that the Sirius 3 Proton rocket is not currently in alldat because its last elements are nearly two years old: Dec 2000 1 26629U 00077D 00351.80816788 -.00000109 00000-0 00000+0 0 30 2 26629 63.4148 42.7289 6199498 270.1237 22.0630 1.44694501 235 April 2001 1 26629U 00077D 01100.53240314 -.00000068 00000-0 00000+0 0 88 2 26629 63.5073 37.7930 6229204 271.0709 21.6878 1.44700537 1892 Note that the mean motion and inclination increased during this 115 days. Int2 produced the following. (Int2 will not change the mean motion.) 1 26629U 00077D 03053.28019845 0.00000000 00000-0 00000+0 0 09 2 26629 63.7453 6.0678 6303706 271.6352 0.0000 1.44700537 04 This elset was wrong in time by about 5 hours and about 1 degree in error cross-track. I have adjusted the epoch time and the node to fit the obs. I guessed at the value for an increased mean motion. Sirius 3 Proton rcoket 1 26629U 00077D 03053.92715960 0.00000000 00000-0 00000+0 0 01 2 26629 63.7453 5.1747 6303706 271.6344 88.3655 1.44790037 01 This should be fairly accurate for the next few weeks. But I may come up with a better mean motion using my numerical integration program. Mike McCants ----------------------------------------------------------------- To unsubscribe from SeeSat-L, send a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@satobs.org List archived at http://www.satobs.org/seesat/seesatindex.html
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