Re: Derived CONTOUR TLE

From: Michael McCants (mmccants@jump.net)
Date: Thu Jun 27 2002 - 12:45:31 EDT

  • Next message: Bjorn Gimle: "Re: Derived CONTOUR TLE"

    Gene Heyler posted:
    
    >Launch window opens at 6:56:14 UT 1-July-2002.
    >Orbit epoch below is 8:00:49 UT 1-July-2002, near 1st ascending node.
    >
    >1 99999U           2182.33390046  .00000000  00000-0  00000-0 0    10
    >2 99999  29.6995 194.2082 8942378 335.3240   0.25     0.57887000   12
    
    Output for Austin, Tx (times are CDT):
    
      30.314  97.866 Bee Caves Rsrch Ctr
    
      2002 Jul 1   Mon morning  Times are CDT
    
    Contour                    IM 4.0
      U  MAG    HGT ALT AZI  HRS MIN RANGE
     66  9.9   3734  17 279    3  25  5559 (miles)
     73  9.6   4683  28 278    3  30  6034
     78  9.6   5619  37 278    3  35  6644
     83  9.7   6536  44 278    3  40  7336
     87  9.9   7431  50 277    3  45  8074
     90 10.1   8304  54 276    3  50  8834
     93 10.2   9155  57 276    3  55  9604
     96 10.4   9985  60 275    4   0  0373
    100 10.7  11585  64 273    4  10  1895
    105 11.0  13850  67 270    4  25  4104
    111 11.5  17322  68 267    4  50  7560
    116 12.0  21087  66 264    5  20  1367
    
    This prediction is just after the boost into the eccentric orbit.
    
    Visibility is more favorable for the West Coast, less favorable
    for the East Coast.
    
    My guess is intrinsic magnitude 4.0 (full phase).  But...
    
    Contour is a 2 meter by 2 meter octagon.  Normal cruise mode is
    spin stabilized.  It's mostly black, so it may be very faint unless
    one of the flat sides reflects sunlight properly.  So maybe it will
    be flashing to magnitude 8 or 9 every 5 or 10 seconds and invisible
    the rest of the time.
    
    There ought to be a booster rocket nearby?
    But it will be even fainter at IM 5.0 or 5.5?
    
    Mike McCants
    
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