Cees Bassa reminded us of an UNID he spotted on two recent nights, suspected to be one of the four Essaim satellites: http://www.satobs.org/seesat/Feb-2013/0034.html I found that the propagated disposal orbit of Essaim 4 was closest in plane to both sets of points: 1 78497U 04049F 13004.73350277 0.00000457 00000-0 64045-4 0 06 2 78497 98.3564 27.7828 0013757 75.8276 284.1548 14.77581571 02 Correcting to fit the observations yields this approximate orbit: Essaim 4 1 28497U 04049F 13004.70122319 .00000459 00000-0 64045-4 0 04 2 28497 98.3853 27.0342 0004584 245.7771 114.2959 14.77793636 04 This TLE probably is currently accurate to within several minutes of time. Here are the observations with their correct IDs: 28497 04 049F 4553 F 20121215174306325 17 25 0823578+702845 37 I 28497 04 049F 4553 F 20121215174313604 17 25 0852701+694911 37 I 28497 04 049F 4553 F 20121215174315284 17 25 0858881+693804 37 I 28497 04 049F 4553 G 20130104170622042 17 25 0747373+473787 37 I 28497 04 049F 4553 G 20130104170624342 17 25 0751476+475518 37 I Ted Molczan _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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