USA 129 elements

From: Ted Molczan (molczan@home.com)
Date: Thu Nov 30 2000 - 13:57:22 PST

  • Next message: Ted Molczan: "USA 129 search elements"

    The following elements are based on observations by Tony Beresford and Greg
    Roberts from 2000 Nov 24 - 29:
    
    USA 129         15.0  3.0  0.0  5.1 v
    1 24680U 96072A   00334.84947917  .00053030  00000-0  76638-3 0    00
    2 24680  97.8152  35.0609 0465688 158.9846 203.1304 14.84495183    05
    
    Mean residuals are about 0.01 deg.
    
    Both Tony and Greg have reported the object as a no-show on 2000 Nov 30 UTC,
    suggesting that it may have manoeuvred. If so, and assuming it was the expected
    major re-boost, then earliest it could have occurred would have been the first
    perigee passage after Greg's sighting late on the 29th, resulting in this
    approximate orbit:
    
    1 70000U          00334.87951389  .00040000  00000-0  60988-3 0    08
    2 70000  97.8152  35.0905 0513000 158.8860   3.5000 14.73500000    06
    
    I recommend that observers plot both of the above orbits, to aid in recovering
    the object. If it does not show up in the pre-manoeuvre orbit, then the
    post-manoeuvre search orbit provides the worst case scenario in terms of how
    late and off course the object might be.
    
    I had hoped to issue this in time for Greg to use tonight, but I could not make
    room in my schedule. I may post additional search orbits later.
    
    Ted Molczan
    
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