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

From: John Burns (seesat@john.geek.nz)
Date: Sun Mar 06 2011 - 08:36:42 UTC

  • Next message: Greg Roberts: "Re: X-37B OTV 2-1 search elements"

    Which software do you use to calculate predictions from the two line elements?
    I'm hoping to record the X37 pass over Auckland, NZ
    
    John
    
    On Sun, Mar 6, 2011 at 12:05 PM, Ralf Vandebergh
    <ralf.vandebergh@home.nl> wrote:
    >  Referring to what is mentioned below, there was one thing which I noted
    > during the launch.
    >  They stopped obviously quick with showing the camera-view, namely until
    > just before the
    >  fairing jettisoning, and switched over to animation.
    >
    >  Ralf
    >>
    >> 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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