Updated elements

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Fri Oct 08 2010 - 15:48:38 UTC

  • Next message: Björn Gimle: "{Filename?} Ang: Re: Ang: Re: UNID (NROL?)"

    I am re-sending this message, which is taking unreasonably long to propagate.
    
    Ted
    
    Scott Campbell, Russell Eberst, Kevin Fetter, Tim Luton, Mike McCants, Greg Roberts, Patrick
    Schmeer, Peter Wakelin, and Brad Young, contributed observations used to determine one or more of
    the following element sets.
    
    DSP F7 r2                                            35717 X 35853 km
    1 09855U 77007C   10281.07626554  .00000000  00000-0  00000-0 0    08
    2 09855  13.6519 338.6012 0016090 255.5308 104.2803  1.00280678    01
    Arc 20100929.05-10071 WRMS resid 0.002 totl 0.001 xtrk
    
    XSS-11                                                   375 X 697 km
    1 28636U 05011A   10281.14772622  .00005076  00000-0  16790-3 0    02
    2 28636  98.5432  89.1795 0232964 193.3327 166.1677 15.09060471    08
    Arc 20101003.38-1008.16 WRMS resid 0.018 totl 0.015 xtrk
    
    Observations of AEHF 1 over the past ~24 h indicate a recent small change in mean motion, that seems
    more likely to be the result of an impulse from the spacecraft than error or perturbations. The
    corresponding increase in perigee height - between 300 m and 700 m - is much less than would be
    expected from the HCTs (Hall Current Thrusters), during the Segment 3 manoeuvres, which I believe
    will average >50 km/day.
    
    I offer two solutions, spanning different periods, with epoch corresponding to the latest
    observation.
    
    AEHF 1                                                4712 X 49978 km
    1 36868U 10039A   10281.18785000  .00000000  00000-0  00000-0 0    08
    2 36868  15.1167 297.4859 6711430 201.2816 334.3451  1.40205087    00
    Arc 20101006.99-1008.19 WRMS resid 0.003 totl 0.003 xtrk
    
    AEHF 1                                                4712 X 49978 km
    1 36868U 10039A   10281.18785000  .00000000  00000-0  00000-0 0    08
    2 36868  15.1174 297.4887 6711515 201.2754 334.3489  1.40206196    07
    Arc 20101002.12-1008.19 WRMS resid 0.005 totl 0.003 xtrk
    
    AEHF 1 r                                               229 X 49981 km
    1 36869U 10039B   10280.80546321  .00004408  00000-0  14459-2 0    09
    2 36869  21.4129 299.3068 7901456 201.9209  81.9790  1.55447747    03
    Arc 20101001.14-10080 WRMS resid 0.004 totl 0.003 xtrk
    
    Ted Molczan
    
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