Updated elements

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Fri Mar 06 2009 - 18:38:18 UTC

  • Next message: Russell Eberst: "2009MAR6.OBS"

    Tony Beresford, David Brierley, Scott Campbell, Russell Eberst, Peter Gertson,
    Pierre Neirinck, Greg Roberts and Peter Wakelin made observations used in one or
    more of the following orbit determinations.
    
    The line following each element set states the duration of the underlying
    observational period, or "arc", and the WRMS (weighted average root mean square)
    residuals between the orbit and the observations; the smaller the value, the
    better. 
    
    Lacrosse 2
    1 21147U 91017A   09064.79953076  .00000023  00000-0  33716-5 0    01
    2 21147  67.9863 301.3492 0008248 243.0392 117.0296 14.76115538    00
    Arc 2009 Feb 25.82 - Mar 05.82, WRMS residuals = 0.022 deg
    
    SLDCOM 3                                              2646 X 11617 km
    1 23893U 96029A   09064.72954826  .00000003  00000-0  22221-2 0    00
    2 23893  63.4393  54.0186 3320158 263.5610  58.3353  5.52845220    04
    Arc 2008 Nov 15.91 - Mar 05.80, WRMS residuals = 0.011 deg
    
    SDS 2-4                                                670 X 39685 km
    1 23945U 96038A   09065.17514354  .00000000  00000-0  00000-0 0    02
    2 23945  63.8141 234.4650 7345757 252.9404  21.0391  2.00600000    00
    Arc 2009 Mar 06.18 - 06.23, WRMS residuals = 0.008 deg
    
    The mean motion of the above is a guess.
    
    Lacrosse 3 
    1 25017U 97064A   09065.04932456  .00000059  00000-0  94052-5 0    06
    2 25017  57.0094  61.3253 0007072  99.4012 260.7810 14.71579487    00
    Arc 2009 Feb 09.20 - Mar 06.06, WRMS residuals = 0.030 deg
    
    SDS 3-4                                                565 X 39787 km
    1 28384U 04034A   09064.55001848  .00000000  00000-0  00000-0 0    09
    2 28384  63.5805   9.8923 7385457 272.9590  13.0294  2.00623847    09
    Arc 2009 Feb 20.21 - Mar 05.87, WRMS residuals = 0.005 deg
    
    USA 186 
    1 28888U 05042A   09061.81647543  .00009319  00000-0  89382-4 0    08
    2 28888  97.9173 126.3862 0534951 148.8475 214.5650 14.77461048    09
    Arc 2009 Feb 25.82 - Mar 02.83, WRMS residuals = 0.022 deg
    
    DSP F23                                              35753 X 35785 km
    1 32287U 07054A   09064.20655843  .00000000  00000-0  00000-0 0    03
    2 32287   2.7588 265.8130 0003226  21.1464 338.5398  1.00339412    02
    Arc 2009 Jan 13.78 - Mar 06.20, WRMS residuals = 0.007 deg
    
    On the epoch date, DSP 23 was located at 28.16 E, and drifting east 0.236 deg/d,
    and slowly accelerating.
    
    USA 200                                               1060 X 39296 km
    1 32706U 08010A   09064.62514303  .00000000  00000-0  00000-0 0    03
    2 32706  63.8433 356.0691 7199097 269.7373  15.4543  2.00597717    06
    Arc 2009 Feb28.82 - Mar 05.88, WRMS residuals = 0.008 deg
    
    09526A                                                1142 X 39209 km
    1 90083U 09526A   09064.53870985  .00000000  00000-0  00000-0 0    09
    2 90083  63.9881 333.3802 7167921 278.5579  12.9852  2.00628919    09
    Arc 2009 Feb 28.83 - Mar 05.88, WRMS residuals = 0.011 deg
    
    Ted Molczan
    
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