The Cosmos 2266 rocket (22889, 93 70B) has decreased its tumble period on a fairly regular basis in the past. On Thursday and Friday nights, Ed and I observed it to be tumbling with a period of about 23.5 seconds. The acceleration may have occurred 6 months ago, since the elsets show an anomalous change in mean motion at that time: 1 22889U 93070B 99363.15279131 .00000251 00000-0 23613-3 0 6147 2 22889 82.9436 23.2572 0052307 105.0901 255.6049 13.76909667309262 1 22889U 93070B 00006.50928670 .00007134 00000-0 71379-2 0 6217 2 22889 82.9373 17.0448 0052590 83.1664 277.5477 13.77012404310413 1 22889U 93070B 00013.04867210 .00003158 00000-0 31491-2 0 6264 2 22889 82.9385 12.1809 0052402 66.5537 294.1095 13.77074280311310 1 22889U 93070B 00019.00674818 -.00000152 +00000-0 -16856-3 0 06460 2 22889 082.9385 007.7497 0052405 049.8099 310.7625 13.77059309312133 Subsequent elsets seem to show just normal drag, but there is one with a negative drag: 1 22889U 93070B 00138.89357146 -.00000129 +00000-0 -14509-3 0 06626 2 22889 082.9445 278.6467 0052695 071.6544 289.0341 13.77083788328638 Current elset: 1 22889U 93070B 00187.64696917 +.00000038 +00000-0 +22979-4 0 06993 2 22889 082.9442 242.4126 0049987 299.3957 060.2223 13.77085640335346 Mike McCants Austin, Tx ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www2.satellite.eu.org/seesat/seesatindex.html
This archive was generated by hypermail 2b29 : Sat Jul 08 2000 - 09:39:53 PDT