Re: Strange TLE for 02-024X

From: Edward S Light (
Date: Sat May 25 2002 - 23:03:27 EDT

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    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
    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
    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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