5920 obs 2006-03-23

From: Björn Gimle (bg_26934@glocalnet.net)
Date: Thu Mar 23 2006 - 18:27:52 EST

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    From my rarely used site 5920, again without stopwatch and red light,
    but with 7*50, I continued my search for USA 129 in the interval +1/+45
    from elset with epoch 06054. After this search, I looked for USA 186,
    and it appeared to be 50 s late wrt. 06065 elset.
    
    A number of possible candidates, and other strays seen,most of them
    unusually (+)  bright. Using only wristwatch, pen, paper and distant
    streeetlights I got enough info to identify all stray observations as
    #28471, 15772, 23705, 12785, 11332, 16182.
    
    I find no other candidates than USA 129 and USA 186, brighter than +7,
    for my observations ~19:37:40 to ~19:40:50 and ~19:58:40.
    Very approximate observations, in IOD format:
    24680 96 072A   5920 G 20060323193740000 19 25 0929472+222881 59 S
    24680 96 072A   5920 G 20060323194050000 19 25 2319941+623251 59 S
    28888 05 042A   5920 G 20060323195840000 19 25 0205575+404600 19 S
    
    Unfortunately, I did not see USA 129 on its following, 5 deg W pass, and
    our forecast for tomorrow says we are getting more snow.
    
    Hopefully someone in Canada may spot it tonight, or in the UK tomorrow,
    to allow us to determine the mean motion sufficiently well.
    
    Speculating that an apogee raise was made when perigee was on the
    equator, I get the following search orbit:
    USA 129 search                                   1041 x 281
    1 24680U 96072A   06075.70000000  .00010000  00000-0  12992-3 0    21
    2 24680  97.9290 140.2150 0540000 359.7468 205.0860 14.69950000  3099
    
    If my assumptions are reasonable, allow +-1 min/day error, otherwise at 
    least +-5 min/day.
    
     -- Björn Gimle                                        --
    -- COSPAR 5919, MALMA,    59.2615 N, 18.6206 E, 33 m  --
    -- COSPAR 5918, HAMMARBY, 59.2985 N, 18.1045 E, 44 m  --
    -- COSPAR 5920, FRUVIK,   59.3260 N, 18.4820 E, 11 m  --
    
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