RE: Appears ISS is leading shuttle

From: Ted Molczan (sslmolcz@rogers.com)
Date: Tue Jun 19 2007 - 13:53:26 EDT

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    Bill Bard wrote:
    
    > According to the Control Center map, it appears that the ISS 
    > is leading the shuttle. I think one report said that they 
    > should be 45 miles apart by this evening.
    
    NASA has just updated its shuttle elements page:
    
    http://spaceflight1.nasa.gov/realdata/sightings/SSapplications/Post/JavaSSOP/orb
    it/SHUTTLE/SVPOST.html
    
    This was the final predicted docked elset:
    
    1 31600U 07024A   07170.07305939  .00014500  00000-0  95600-4 0  9000
    2 31600  51.6346  94.1642 0007818 333.4143  26.6620 15.78133555  1611
    
    This is the one after the final separation manoeuvre:
    
    1 31600U 07024A   07170.70628151  .00014500  00000-0  95600-4 0  9026
    2 31600  51.6332  90.8927 0008764 338.0690  22.0098 15.77984601  1719
    
    This means that the shuttle will trail ISS; propagating the above using SGP4,
    results in the following schedule of range, stated in km:
    
     Date   UT   km
    Jun 19  18    1
    Jun 19  19    2
    Jun 19  20    5
    Jun 19  21   10
    Jun 19  22   11
    Jun 19  23   15
    Jun 20  00   19
    Jun 20  01   19
    Jun 20  02   24
    Jun 20  03   27
    Jun 20  04   28
    Jun 20  05   33
    Jun 20  06   36
    Jun 20  07   37
    Jun 20  08   42
    
    For greater accuracy, wait for the elsets on Space Track to settle down to
    realistic values, and use those.
    
    Ted Molczan
    
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