USA 129 has manoeuvred again

From: Ted Molczan (molczan@rogers.com)
Date: Wed Mar 24 2004 - 09:18:17 EST

  • Next message: Greg Roberts: "Obs 23 March 2004-part 1"

    Alberto Rango's and Mike Waterman's observations on consecutive passes revealed
    the object running significantly late and off-track; it had made another
    manoeuvre.
    
    In my analysis, I considered both an apogee-raising and a perigee-raising, and
    found that the latter produced somewhat better residuals.
    
    To produce the following elset, I propagated my pre-manoeuvre elset, and then
    corrected only the RAAN, mean anomaly and mean motion, while setting
    eccentricity to maintain the pre-manoeuvre perigee distance.
    
    Observation arc 2004 Mar 23.81 - 23.88 UTC:
    
    USA 129         15.0  3.0  0.0  5.3 v
    1 24680U 96072A   04083.86857107  .00021727  00000-0  30106-3 0    06
    2 24680  97.9618 145.2418 0533000 169.2794 192.0332 14.71135605    09
    
    WRMS residuals = 0.030 deg
    
    Ted Molczan
    
    
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