DK Watch : 2 obs of 17256

From: Daniel Deak (dan.deak@sympatico.ca)
Date: Wed Jul 05 2000 - 00:31:14 PDT

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    Hi all,
    
    On the morning of July 5 UTC, I observed #17256, Cosmos 1278 deb on
    2 consecutive passes. This object originated from the self-destruction of
    #12547, Cosmos 1278 in December 1986.
    
    It can be seen with binoculars flashing at a regular rate but with irregular
    maxima. On the first pass, the brightest maximum was around m +3.5
    and was seen naked eye. But for most of this 30 deg. elevation pass, it was
    flashing to mag +7 to inv. On the second pass, maxima were at around m +5
    with minima around m +8 to 9. I timed the period on this pass at 0.72 sec
    based on 30 cycles.
    
    On the positional side, on its first pass, it was 1 min 16 sec late and on the
    second, 36 sec late using Alan's predicted elset :
    Cosmos 1278 deb E                                3308 x 108 km
    1 17256U 81058E   00187.05226111  .52020749  54251-1  25880-2 0 98199
    2 17256  62.7664 159.4380 1978156 196.4393 156.0987 11.94019306100894
    
    Here are the coordinates :
    Pass 1 : 04:02:43.3 UTC ± 0.5 sec  AD 01h20m50s  dec +54d44m
    Pass 2 : 06:04:46.5 UTC ± 0.5 sec  AD 21h14m30s  dec +64d36m
    Observation site : 45.8681 N, 72.5133 W, 75 m
    
    Cheers,
    
    Dan
    
    --
    Daniel Deak
    Drummondville, Québec
    
    COSPAR site 1746 : 45.8537°N, 72.4857°W, 90 m., UTC-5:00
    
    E-mail : dan.deak@obsat.com        ICQ : 52770063
    Site en francais sur les satellites:
    French-language satellite web site : http://www.obsat.com
    
    
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