RE: X-37B OTV 2-1 search elements

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Sat Mar 05 2011 - 18:13:52 UTC

  • Next message: Derek C Breit: "RE: X-37B OTV 2-1 search elements"

    X-37B OTV 2-1 is scheduled for launch from Cape Canaveral on an Atlas V-501, today, 2011 Mar 05, during 10 minute windows beginning
    at 21:09 UTC, and ~22:46 UTC.
    
    I am following up on Bob Christy's observation that the 97 min interval between the windows could be the orbital period of another
    satellite involved somehow in the launch, perhaps one of the KeyHoles. The 18-19 min/d later arrival of the windows also is
    consistent with the involvement of another satellite, with period near 97 min. I have identified a number of potential classified
    and unclassified satellites with period near 97 min, and am looking for meaningful conjunctions. I will report my findings when
    complete.
    
    The following search elements are based on the initial orbit of OTV 1-1, at the opening of today's windows.
    
    T0=21:09                                                 400 X 423 km
    1 70406U          11064.92885959  .00000000  00000-0  00000-0 0    07
    2 70406  39.9849 267.8099 0016616 341.1195  18.8998 15.52662485    03
    
    T0=22:46                                                 400 X 423 km
    1 70407U          11064.99622070  .00000000  00000-0  00000-0 0    08
    2 70407  39.9849 292.1263 0016616 341.1195  18.8998 15.52662485    08
    
    I am reasonably confident of the inclination, less so of the altitude.
    
    The OTV's standard visual magnitude is 4.2 (1000 km range, 90 deg phase angle).
    
    Ted Molczan
    
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