Tony Beresford wrote: > The current orbit of usa 129 is very nearly 15 revs/day, > and I have had 2 passes each evening at close to the > same alt-az on successive days. I dont recall this happening > in previous years since launch. It was about one month from exact 15:1 resonance (which would have occurred when mean motion reached ~15.00907 rev/d) when you and Greg Roberts observed it in November 2011: 289 X 843 km 1 24680U 96072A 11319.79117576 .00024500 00000-0 33505-3 0 05 2 24680 97.6865 9.0108 0399173 36.4459 323.5539 14.99376827 00 Greg recovered it at the end of December, by which time it had raised its perigee: 311 X 835 km 1 24680U 96072A 11364.78318417 .00010000 00000-0 18802-3 0 04 2 24680 97.6865 53.5714 0376658 243.9399 116.0600 14.97086013 05 I estimate that the reboost occurred near Dec 15, about the time it would have reached 15:1 resonance. Ted Molczan _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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