06667A / 90061 re-discovered by Kevin Fetter

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Tue Mar 24 2009 - 15:05:30 UTC

  • Next message: Ted Molczan: "RE: 06667A / 90061 re-discovered by Kevin Fetter"

    Kevin Fetter has re-discovered 06667A / 90061, which he reported as an unknown,
    along with accurate positions and an approximate orbit:
    
    http://satobs.org/seesat/Mar-2009/0413.html
    
    06667A had not been observed in more than two years, and was lost; this was its
    last known orbit:
    
    1 90061U 06667A   07048.80870443  .00000860  00000-0  32587-3 0    09
    2 90061  27.5117 141.2326 6842940  19.0783 340.9213  2.83143424    04
    
    Mike McCants' current integrated estimate is:
    
    1 90061U 06667A   09082.58080035  .00003329  00000-0  53540-3 0    09
    2 90061  27.3299 132.9154 6845601 266.5703  19.5992  2.85631626    08
    
    which is very similar to Kevin's approximate orbit:
    
    1 99999U 0000000  09083.07302836 0.00000073  00000-0  50000-4 0    06
    2 99999  27.3206 132.1708 6859375 268.0332  47.3492  2.79247863    03
    
    I have fit the following approximate elements, derived from the integrated
    elements:
    
    1 70000U          09083.04470105  .00003428  00000-0  53540-3 0    08
    2 70000  27.3299 131.9871 6846226 267.5576  19.1640  2.85634715    05
    
    I suspect that the mean motion could be off by at least 0.01 rev/d, which would
    result in a prediction time uncertainty of at least 5 min after one day.
    
    Ted Molczan
    
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