USA 237 continues to drift west; brightness similar to Mentor

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Wed Sep 05 2012 - 15:36:00 UTC

  • Next message: Scott Tilley: "ST OBS Sept 5, 2012"

    Observations of USA 237 (12034A / 38528) by Greg Roberts and Peter Wakelin, during Aug 18 to Sep 04 UTC, reveal that it
    was nearly synchronous, drifting west about 0.05 deg/d.
    
    As of Greg's observations late on Sep 04 UTC, it was at 48.03 E:
    
    USA 237                                              35637 X 35945 km
    1 38528U 12034A   12248.74070710  .00000000  00000-0  00000-0 0    02
    2 38528   3.4278 299.3365 0036480 316.9677  42.6089  1.00259012    08
    Arc 20120818.99-0904.84 WRMS resid 0.006 totl 0.005 xtrk
    
    I have produced a plot comparing the initial brightness observations of USA 237 (all by Greg Roberts) with those of
    Mentor spacecraft observed by Greg and colleagues: 
    
    http://satobs.org/seesat_ref/misc/Mentor_and_12034A.pdf
    
    USA 237 appears to be similar in brightness to the Mentors over the narrow range of phase angle of the observations. The
    comparison will become more meaningful as observations at great phase angle are added.
    
    Ted Molczan
    
    
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