X-37B OTV 2-1 found by Greg Roberts

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Wed Mar 09 2011 - 13:42:00 UTC

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    I was pleased to awaken to Greg Roberts report of the first observations of OTV 2-1:
    
    http://satobs.org/seesat/Mar-2011/0180.html
    
    Its inclination is greater, and its altitude less, than that of OTV 1-1's initial orbit.
    
    As always with initial elements based on a short arc, they are less certain than implied by the residuals, so I offer several
    variants that I hope will be sufficient to recover the object:
    
    X-37B OTV 2-1                                            317 X 319 km
    1 70409U          11068.09160295  .00048866  00000-0  20000-3 0    08
    2 70409  42.9235 271.9574 0001000 282.8509  77.2251 15.85082872    07
    Arc 20110309.15-0309.15 WRMS resid 0.149 totl 0.025 xtrk
    
    X-37B OTV 2-1                                            316 X 331 km
    1 70410U          11068.09151487  .00044795  00000-0  20000-3 0    00
    2 70410  43.0000 271.8614 0011478 281.5725  78.3858 15.83159041    07
    Arc 20110309.15-0309.15 WRMS resid 0.149 totl 0.025 xtrk
    
    X-37B OTV 2-1                                            317 X 344 km
    1 70411U          11068.09141775  .00040523  00000-0  20000-3 0    05
    2 70411  43.0000 271.8559 0020260 296.9292  62.9510 15.80799992    00
    Arc 20110309.15-0309.15 WRMS resid 0.149 totl 0.025 xtrk
    
    The 70409 elset is the least forced of the three; the mean motion of 70411 was forced to better agree with the launch, but that is
    difficult to judge, given the significant dog-legging during the ascent.
    
    Observers should report data using the object's actual identifiers, 37375 and 11010A, as Greg did; I am using pseudo IDs in the
    elsets until we are more certain of the elements, to avoid potentially confusing entries finding their way into public archives.
    
    Ted Molczan
    
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