TJM obs of 2008 Feb 21 UTC

From: Ted Molczan (ssl2molcz@rogers.com)
Date: Thu Feb 21 2008 - 01:10:15 UTC

  • Next message: Walter Ridgewell: "USA 193 observation"

    I observed USA 193 on a 10 deg elevation pass. The phase angle was high (which
    means I was looking mostly into its shadow), and the object was at the low end
    of the expected brightness range, about 2 mag fainter than predicted.
    
    29651 06 057A   2701 G 20080221004025600 17 25 2058586+443405 18 S+070 05
    29651 06 057A   2701 G 20080221004032400 17 25 2045221+462022 18 S+070 05
    
    IOD format: http://www.satobs.org/position/IODformat.html
    
    Site 2701: 43.68764 N, 79.39243 W, 230 m
    
    The object was 2.7 s early relative my 1.25 day old elements (shown below), and
    within 0.05 deg cross-track.
    
    USA 193          5.0  2.5  0.0  4.3 v                    245 X 258 km
    1 29651U 06057A   08050.77400802  .00256405  00000-0  29678-3 0    02
    2 29651  58.5208  31.8067 0009932  58.7181 301.4893 16.08191854    02
    Arc 2008 Feb 18.04 - 19.78, WRMS residuals = 0.027 deg
    
    I expect to post updated elements later tonight.
    
    Ted Molczan
    
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