STSS Demo - search elements for Sep 25 launch

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Thu Sep 24 2009 - 17:19:08 UTC

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    The STSS Demo satellites are scheduled for launch on 2009 Sep 25, between 12:00
    UTC and 13:00 UTC, from Cape Canaveral, aboard a Delta 2 rocket.
    
    Here are approximate elements, based on launch at window-open.
    
    The parking orbit is valid until T+42m30s:
    
    Parking orbit                                           185 X 1537 km
    1 77001U          09268.50731830  .00000000  00000-0  00000-0 0    00
    2 77001  54.6000  86.3994 0933762  36.2000  18.3000 14.09479000    08
    
    Payload 1                                              1346 X 1352 km
    1 77004U          09268.53320604  .00000000  00000-0  00000-0 0    09
    2 77004  58.0000  85.9395 0003600 216.2526 335.5000 12.77975000    09
    
    Payload 2                                              1339 X 1350 km
    1 77005U          09268.53835649  .00000000  00000-0  00000-0 0    00
    2 77005  58.0000  85.9256 0007193 216.2579 359.0000 12.79123000    03
    
    Payload numbers are in order of separation from the 2nd stage.
    
    RAANs are accurate to 1 deg, at best. Argument of perigee of the payload orbits
    is a guess. 
    
    They are intended to orbit in formation, separated by a central angle of 35 deg,
    or about 11 min of time.	My guess of std magnitude is 6 to 7 (1000 km, 90
    deg phase angle).
    
    Here are a couple of rough guesses for the final orbit of the Delta II's 2nd
    stage, for inclination changes of minus and plus 2 deg:
    
                                                            179 X 1350 km
    1 77007U          09268.57986112  .00000000  00000-0  00000-0 0    08
    2 77007  56.0000  83.3325 0820000 206.4000 204.0000 14.38000000    02
    
                                                            179 X 1351 km
    1 77008U          09268.57986113  .00000000  00000-0  00000-0 0    00
    2 77008  60.0000  88.1412 0820000 203.8000 204.0000 14.38000000    09
    
    Southern hemisphere observers near 30 S, would have all night visibility of the
    above orbits.
    
    Ted Molczan
    
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