Derek Breit, David Brierley, Scott Campbell, Russell Eberst, Kevin Fetter, Peter Gertson, Bruce MacDonald, Pierre Neirinck, Alberto Rango, Greg Roberts, Peter Wakelin, Mike Waterman, Brad Young, and I, contributed observations used to determine one or more of the following element sets. Peter Wakelin observed USA 202 (09001A / 33490) on Apr 18/19 UTC, running about 60 s late relative the epoch 09105 elements. If it had already manoeuvred as of the previous observations, on Apr 15 UTC, then the following elements apply: 1 70001U 09108.23755306 .00000000 00000-0 00000-0 0 00 2 70001 2.8886 339.2506 0018843 94.6308 265.2748 1.00191386 07 The following apply for manoeuvres subsequent to Apr 15, assuming they occurred near perigee: Manoeuvre Apr 16 11:47:30 UTC 1 70002U 09108.23758203 .00000000 00000-0 00000-0 0 00 2 70002 2.8883 339.2970 0018220 98.2436 261.6533 1.00177227 01 Manoeuvre Apr 17 11:44:40 UTC 1 70003U 09108.23740629 .00000000 00000-0 00000-0 0 04 2 70003 2.8886 339.2968 0017212 98.7175 261.1677 1.00158167 03 Manoeuvre Apr 18 11:41:40 UTC 1 70004U 09108.23653195 .00000000 00000-0 00000-0 0 06 2 70004 2.8901 339.2955 0012232 101.9777 257.8495 1.00063803 02 I note that the object's previous drift rates were near 0.25, 0.5, and 1.0 deg/d, and that 70004 drifts west ~0.75 deg/d, which might fit a pattern, in terms of rounding to the nearest quarter degree. This can only be confirmed through subsequent observations. USA 89 r 338 X 6730 km 1 22519U 92086C 09108.87174308 .00001505 00000-0 18908-3 0 03 2 22519 56.9072 109.3325 3224448 8.0333 356.1385 8.79680749 06 Arc 20090412.97-0418.88 WRMS resid 0.02 deg USA 129 292 X 940 km 1 24680U 96072A 09109.09722627 .00003619 00000-0 57315-4 0 05 2 24680 97.8405 162.8676 0462574 276.0795 78.7914 14.83286757 02 Arc 20090418.09-0419.11 WRMS resid 0.02 deg USA 186 258 X 1012 km 1 28888U 05042A 09108.87791264 .00008708 00000-0 81619-4 0 02 2 28888 97.8900 172.7030 0537632 356.1352 3.5780 14.77283455 09 Arc 20090411.85-0418.89 WRMS resid 0.043 deg 06667A 247 X 28915 km 1 90061U 06667A 09108.90909242 .00006591 00000-0 11758-2 0 02 2 90061 27.4016 119.2918 6839035 288.5341 12.3283 2.86196229 08 Arc 20090401.79-0418.98 WRMS resid 0.01 deg 96632A 30485 X 35669 km 1 96132U 96632A 09108.48480284 .00000000 00000-0 00000-0 0 06 2 96132 9.4189 28.6994 0657040 259.2485 93.2768 1.10781014 07 Arc 20090103.89-0419.03 WRMS resid 0.006 deg Ted Molczan ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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