ORS 1 rediscovered by Kevin Fetter

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Mon Sep 10 2012 - 22:53:55 UTC

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    Kevin Fetter rediscovered ORS 1 as an UNID overnight and reported his observations:
    
    http://satobs.org/seesat/Sep-2012/0107.html
    
    Since the object manoeuvres to maintain its orbit against drag, I have fit an orbit that minimizes the along-track error
    over the past month, which probably spans several reboosts: 
    
    ORS 1                                                    417 X 419 km
    1 37728U 11029A   12254.38102251  .00000000  00000-0  00000-0 0    09
    2 37728  40.0000 325.4826 0002000 342.1879  17.8861 15.50381280    03
    Arc 20120807.07-0910.4 WRMS resid 9.252 totl 0.068 xtrk
    
    During that period, the prediction time error is within +/- 30 s, with reasonable cross-track accuracy. For future
    predictions, I recommend allowing at least +/- 60 s prediction time uncertainty, with allowance for Earth's rotation
    over the interval. With additional observations it may be possible to refine the mean mean-motion.
    
    Ted Molczan
    
    
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