RE: SBIRS GEO 1 pre-launch elements

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Sun May 08 2011 - 03:09:22 UTC

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    Bob Christy wrote:
    
    > Orbital parameters from the telemetry screen at separation:
    > 185 x 35816 km, incl 21°.64, Ω 319°.847, ω 178°.025, e .710792.
    > 
    > Perigee and apogee are converted from nautical miles shown on the screen
    > readout.
    
    Thank you for getting the data Bob; using the above plus the altitude and MET that you sent off-list, yields he following approximate TLE:
    
                                                           185 X 35817 km
    1 37482U 11019B   11127.78703704  .00000000  00000-0  00000-0 0    07
    2 37482  21.6360 319.8470 7307920 178.0250  10.0000  2.28138000    02
    
    I changed the second significant figure of the eccentricity to account for the perigee and apogee.
    
    > Well done Ted, they must have used your pre-launch set as a target!
    
    That, or I read the press kit.
    
    Ted Molczan
    
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