USA 129 search orbits

From: Ted Molczan (molczan@home.com)
Date: Sun Jul 08 2001 - 10:09:52 PDT

  • Next message: David Brierley: "Re: 96072A"

    Ed Cannon and Paul Gabriel and reported that USA 129 did not show up last
    night.
    
    Paul was observing under good conditions, such that the object should have been
    about magnitude 4.6, so it is quite possible that the major re-boost manoeuvres
    had already taken place, sometime after the last sighting, when the object was
    in the following orbit:
    
    USA 129         15.0  3.0  0.0  5.1 v
    1 24680U 96072A   01187.14410790  .00030059  00000-0  38985-3 0    03
    2 24680  97.8231 248.9330 0479823 167.5134 193.8435 14.83663532    05
    
    Searchers should first look for the object in the above orbit, just in case it
    has not manoeuvred.
    
    In case it has manoeuvred, I have prepared and appended eleven search orbits.
    They are identified only by their pseudo-NORAD numbers, which range from 79001
    through 79011.
    
    Set 79001 is based on a re-boost at the first perigee after the last known
    sighting. This elset will provide the latest possible time and track that the
    object could follow. The next nine search elements follow at intervals of three
    revolutions, which should provide adequate spacing for searchers. Set 79011
    follows set 79010 by two revolutions. It represents a re-boost at the perigee
    immediately prior to Ed and Paul's non-sightings.
    
    The concept of the search is to plot the various search paths to provide a
    guide as to the approximate time and track that the object could follow.
    
    If anyone in Europe or further east has the opportunity to observe, then prompt
    reports via SeeSat-L would be helpful to those of us in North America and
    further west. Even a simple confirmation that the object is no longer in the
    above orbit would be helpful. If you prefer confidentiality, you may e-mail me
    directly at molczan@home.com
    
    Ted Molczan
    
    1 79001U          01187.17523148  .00020000  00000-0  27201-3 0    05
    2 79001  97.8231 248.9636 0521200 167.4113   0.0000 14.74000000    06
    
    1 79002U          01187.37744213  .00020000  00000-0  27201-3 0    06
    2 79002  97.8231 249.1627 0521200 166.7475   0.0000 14.74000000    03
    
    1 79003U          01187.57962963  .00020000  00000-0  27201-3 0    03
    2 79003  97.8231 249.3617 0521200 166.0837   0.0000 14.74000000    00
    
    1 79004U          01187.78182870  .00020000  00000-0  27201-3 0    08
    2 79004  97.8231 249.5607 0521200 165.4199   0.0000 14.74000000    06
    
    1 79005U          01187.98402778  .00020000  00000-0  27201-3 0    03
    2 79005  97.8231 249.7597 0521200 164.7561   0.0000 14.74000000    02
    
    1 79006U          01188.18621528  .00020000  00000-0  27201-3 0    03
    2 79006  97.8231 249.9587 0521200 164.0924   0.0000 14.74000000    00
    
    1 79007U          01188.38841435  .00020000  00000-0  27201-3 0    07
    2 79007  97.8231 250.1578 0521200 163.4286   0.0000 14.74000000    09
    
    1 79008U          01188.59060185  .00020000  00000-0  27201-3 0    06
    2 79008  97.8231 250.3568 0521200 162.7648   0.0000 14.74000000    05
    
    1 79009U          01188.79280093  .00020000  00000-0  27201-3 0    01
    2 79009  97.8231 250.5558 0521200 162.1010   0.0000 14.74000000    04
    
    1 79010U          01188.99497685  .00020000  00000-0  27201-3 0    02
    2 79010  97.8231 250.7549 0521200 161.4373   0.0000 14.74000000    02
    
    1 79011U          01189.12978009  .00020000  00000-0  27201-3 0    03
    2 79011  97.8231 250.8876 0521200 160.9948   0.0000 14.74000000    09
    
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