CORRECTION: OBS 30 Sep 2000

From: Wayne Hughes (hughes@dogwood.botany.uga.edu)
Date: Sat Sep 30 2000 - 08:49:13 PDT

  • Next message: Ed Cannon: "Small parade of three geosynchs"

    Bjoern Gimle proposed three candidates for the "trio" I observed crossing ahead
    of USA 40 r at about 10:06 UT, but said that they crossed *behind* and not
    *ahead* of USA 40 r.  I went back and listened to my tape and indeed, the
    starting time, using a stopwatch  is exactly a minute later than I calculated
    from WWV.  My only explanation is that my WWV checkpoint was at 5:03:01.00 and I
    wrote down 5:02:01.00.  Thus the corrected data show the same numbers as before
    except that the times are advanced by exactly one minute.
    
    This places the satellite only 35 seconds behind prediction, Bjoern's
    requirement for the relative positions of the three candidates and USA 40r is
    satisfied, my recording of the sighting shows where the original mistake is, and
    my writing down of the WWV time shows when the crime was committed!  Residuals
    are around -0.03 for RA and Dec.
    
    20344 89 061D   8333 E 20000930100134740 27 25 0433960+162278 48 S+070 10
    20344 89 061D   8333 E 20000930100258050 27 25 0448875+211992 48 S+070 10
    20344 89 061D   8333 E 20000930100715370 27 25 0600357+395053 48 S+080 10
    
    Many thanks to Bjoern for catching this!  Apologies to everyone for the mistake.
    
    Wayne
    
    
    Bjoern Gimle wrote:
    > 
    > I changed my ndot2/B* for my 00226.0475 USA 40 r elset to match your third
    > time.
    > Between dec +31 and +34 three sats (in satbase.tle) crossed USA 40 r track,
    > but
    > that would be 40-70 s BEHIND USA 40 r, above chi Aur.
    > 79028A #11320 Cosmos 1091   at 993 km height travelled within 1 deg of
    > 88023B #18986 Cosmos 1934 r at 970 km height and
    > 82040F #14165 Cosmos 1362   at 1492 km height were within 6 deg of USA 40
    > around 10:05:25, formed a 5 deg. line at 10:05:35, which shrunk to a 1.5
    > deg.
    > triangle at 10:06:00 near 05:35 +24
    > 
    
    -- 
    Wayne Hughes
    33.8601N 83.2418W 270m  
    Wolfskin Station 8333 Arnoldsville GA USA
    
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