I was pleased to awaken to Greg Roberts report of the first observations of OTV 2-1: http://satobs.org/seesat/Mar-2011/0180.html Its inclination is greater, and its altitude less, than that of OTV 1-1's initial orbit. As always with initial elements based on a short arc, they are less certain than implied by the residuals, so I offer several variants that I hope will be sufficient to recover the object: X-37B OTV 2-1 317 X 319 km 1 70409U 11068.09160295 .00048866 00000-0 20000-3 0 08 2 70409 42.9235 271.9574 0001000 282.8509 77.2251 15.85082872 07 Arc 20110309.15-0309.15 WRMS resid 0.149 totl 0.025 xtrk X-37B OTV 2-1 316 X 331 km 1 70410U 11068.09151487 .00044795 00000-0 20000-3 0 00 2 70410 43.0000 271.8614 0011478 281.5725 78.3858 15.83159041 07 Arc 20110309.15-0309.15 WRMS resid 0.149 totl 0.025 xtrk X-37B OTV 2-1 317 X 344 km 1 70411U 11068.09141775 .00040523 00000-0 20000-3 0 05 2 70411 43.0000 271.8559 0020260 296.9292 62.9510 15.80799992 00 Arc 20110309.15-0309.15 WRMS resid 0.149 totl 0.025 xtrk The 70409 elset is the least forced of the three; the mean motion of 70411 was forced to better agree with the launch, but that is difficult to judge, given the significant dog-legging during the ascent. Observers should report data using the object's actual identifiers, 37375 and 11010A, as Greg did; I am using pseudo IDs in the elsets until we are more certain of the elements, to avoid potentially confusing entries finding their way into public archives. Ted Molczan _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l
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