Re: Strange TLE for 02-024X

From: Edward S Light (edlight@juno.com)
Date: Sat May 25 2002 - 23:03:27 EDT

  • Next message: Mark Hanning-Lee: "Recent observations"

    Dear List,
    
    Ever since I noticed the weirdness in the TLEs of 27430 and 27433
    (02-024A and D), I've tried to see them but the weather has been most
    uncooperative. This evening, (01:33.1 UTC on 2002 May 26) through
    moonlit clouds, I managed to see what is currently referred to as
    27433 = 02024D = "CZ4B DEB". It was perhaps 2 seconds early compared
    to SGP4 predictions derived from these recent elements:
      CZ-4B DEB
      1 27433U 02024D   02145.84413221  .00000695  00000-0  42337-3 0   188
      2 27433  98.8085 196.4478 0015979 162.9809 197.1883 14.09334639  1510
    
    and appeared about 5.3 magnitude (i.e. like 92 Leo which it passed near)
    which implies a "QSIM" (quicksat intrinsic magnitude) of 4.7 and a "SMSM"
    (skymap standard magnitude) of 5.7.
    
    This is more like my 3 prior observations of 27430 = 02-024A on 16 and
    17 May; they averaged QSIM=4.5 +/- 0.8 and SMSM=5.4 +/- 0.7. In contrast,
    this is probably too bright when compared to my two 16-17 May
    observations
    of what at the time was called 27433 = 02-024D; those averaged QSIM=6.0
    +/- 0.3 and SMSM=7.0 +/- 0.20. [Note: the "+/-" figures are the scatter
    among the values and do not attempt to include any absolute or systematic
    errors.]
    
    Maybe other more meteorologically favored observers can obtain better
    data to pin down the ID's of these two (and, e.g., if they have switched
    a few days ago).
    
    
    Clear and dark skies!
       Ed Light
    
    Lakewood, NJ, USA
    
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