Correction/obs 31 Dec 2002

From: Greg Roberts (grr@iafrica.com)
Date: Thu Jan 02 2003 - 08:28:51 EST

  • Next message: Ted Molczan: "USA 129: latest elements and manoeuvre alert"

    Observations made 31 Dec 2002
    ---------------------------------------
    
    CoSaTrak 1, 85mm f/1.6 lens with 0.003 lux CCD surveillance camera.
              + 25mm f/1.4 lens with 0.01 lux surveillance camera
    
    Conditions - good - Seeing good
    
    Cospar Site #0433  Long 18.5129 E, Lat 33.9406 S, altitude 10 metres
    
    This was not reported earlier as it was an UNKNOWN which was subsequently
    identified by Ted. It wasnt in my ALLDAT.TLE of 26 Dec as the satellite was
    too
    newly launched.
    
    27613 02 059A   0433 G 20021231210327800 17 15 0301390-155547 39 S+075 05
    27613 02 059A   0433 G 20021231210342900 17 15 0302560-165913 39 S+075 05
    27613 02 059A   0433 G 20021231210401400 17 15 0304087-181931 39 S+075 05
    
    The satellite, COSMOS 2393 , is in a typical MOLNIYA type orbit and was
    observed at a distance of about 4100 kilometres.
    
    My other object, reported earlier (observed at 22h21m07.0s UT) remains
    unidentified.
    The orbit derived from the observation has the satellite just in shadow at
    the time so
    maybe it was a late flying bird again - I suspect one of the elves of Father
    Christmas
    returning home rather late more than the possibility of it being a bird .
    
    The object had small fluctuations in brightness but every 4.7 second it
    increased in
    magnitude by about 0.5 magnitude so this remains a mystery. Do birds nod
    their head
    or change their flight attitude every 4.7 seconds?- I havent a clue!
    
    Correction:
    ~~~~~~~~~~~~
    I certainly cannot start the New Year without making a mistake! Here is an
    amended position for USA 129. I stupidly misidentified the field when
    setting
    up the FITS image - dont try and do this when you are tired and half asleep!
    Thanks to Pierre for catching it.
    
    24680 96 072A   0433 G 20021231212701400 17 15 0110398-402140 39 S+059 05
    
    Converted by IODEQ to 1950 format :
    
                                         HH MM SS.ss  DD MM SS.s
    27613 02 059A   20021231 2103:27.800 02 59 18.87 -16 07 34.1 B1950
    27613 02 059A   20021231 2103:42.900 03 00 36.90 -17 10 56.0 B1950
    27613 02 059A   20021231 2104:01.400 03 01 50.91 -18 31 10.2 B1950
    
    24680 96 072A   20021231 2127:01.400 01 08 23.11 -40 37 36.3 B1950
    
    
    Cheers
    Greg
    
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