X-37B OTV 1-1 updated elements

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Sun Nov 07 2010 - 15:10:49 UTC

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    Derek Breit, Alberto Rango and Brad Young contributed observations used to determine the following
    element set.
    
    X-37B OTV 1-1                                            315 X 328 km
    1 36514U 10015A   10311.06101127  .00019712  00000-0  84514-4 0    09
    2 36514  39.9875 220.1877 0010034 289.1983  70.7753 15.83963647    08
    Arc 20101104.74-1107.08 WRMS resid 0.025 totl 0.013 xtrk
    
    The latest precise observations, by all three observers, confirm the eccentricity of the orbit.
    Archivists should consider discarding previous preliminary solutions with significantly greater
    eccentricity, or labelling them as approximate.
    
    The ground track of the present orbit nearly repeats in every 31 revs, which takes about 2 days,
    i.e. 31:2. Previous orbits during this mission nearly repeated at 61:4, 91:6 and 46:3. Ground tracks
    that nearly repeat every 2, 3 or 4 days are a common feature of U.S. imaging reconnaissance
    satellite orbits.
    
    Ted Molczan
    
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