Cosmos 2266 rocket observed with 23.5 second tumble period

From: Mike McCants (mikem@fc.net)
Date: Sat Jul 08 2000 - 09:37:15 PDT

  • Next message: Eberst: "JUL6-7.OBS"

    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