AEHF 1 recovered by Peter Wakelin

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Tue May 24 2011 - 02:53:52 UTC

  • Next message: Ted Molczan: "RE: AEHF 1 recovered by Peter Wakelin"

    Peter Wakelin has again recovered AEHF 1 (10039A / 36868), despite its continuing manoeuvres to raise its orbit:
    
    http://satobs.org/seesat/May-2011/0267.html
    
    At the time he spotted it, it was about 31 deg along track from the position predicted by the latest predicted elements,
    issued by Mike McCants for epoch 11134.566. Mike fit the following orbit to Peter's observations:
    
                                                         25893 X 51687 km
    1 36868U 10039A   11142.99006513  .00000000  00000-0  00000-0 0    09
    2 36868   6.6748 278.3214 2855385 228.7029  68.0000  0.90442000    00
    
    Mike has circulated predicted elsets for the following apogees:
    
    1 36868U 10039A   11143.33405481 0.00000000  00000-0  00000-0 0    05
    2 36868   6.6568 278.3314 2834344 228.6829 180.0000  0.90210000    08
    1 36868U 10039A   11144.44257937 0.00000000  00000-0  00000-0 0    09
    2 36868   6.6354 278.3159 2813563 228.7186 180.0000  0.89978000    04
    1 36868U 10039A   11145.55396209 0.00000000  00000-0  00000-0 0    08
    2 36868   6.6150 278.3056 2792231 228.7472 180.0000  0.89746000    03
    1 36868U 10039A   11146.66821788 0.00000000  00000-0  00000-0 0    06
    2 36868   6.5953 278.3028 2770488 228.7623 180.0000  0.89514000    03
    1 36868U 10039A   11147.78536151 0.00000000  00000-0  00000-0 0    07
    2 36868   6.5762 278.3083 2748470 228.7605 180.0000  0.89282000    00
    
    Mike advises:
    
    Use the tle preceding your time of prediction.
    
    These TLEs are predicted for apogee, but each TLE includes the boost which happens at that apogee.
    
    According to AV Week, AEHF 1 is expected to reach its operational orbit by 2011 Aug 31.
    
    Ted Molczan
    
    
    
    
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