Obs May 24

From: Leo Barhorst (leobarhorst@zonnet.nl)
Date: Tue May 25 2004 - 15:48:07 EDT

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    It cleared in time to watch the passages of ISS and Progress-M1 11.
    The first at 20:08 UT pass was shortly after sunset and the sky was still 
    too bright. Didn't see either; although Venus and Jupiter were visible to 
    the naked eye and regulus with binos. A friend of mine, 1 degrees further 
    east saw ISS.
    The second pass at 21:43 was a low 20 degrees elevation pass. 
    Saw Progress-M1 11 followed by ISS 2:30.35 minutes later.
    As it was still clear I stayed outside for another hour. Daylight saving 
    time and early waking up for work makes nights short.
    
    Saw three unids in 1 FOV, following each other closely in a straight
    line. I timed then while passing between delta and epsilon Virgo.
    The first at 22:36:46.44 and S, 4; the second at 22:36:52.38 and S, 3;
    the third at 22:37:01.05 and S, 5. Still have to figure out which
    sats they are.
    
    01- 56 F 04-05-24 22:50:02   LB  215.7 0.5   7 30.8   AA, 4->i, 1 fl, 2
    Timings: 27.47 16.50 14.62 31.01 15.47 16.79 27.00 37.01 29.78 sec.
    Combined period?
    
    02- 54 C 04-05-24 21:16:41   LB   31.5 0.5   7  4.5   AA, 4->i
    Timings: 4.61 8.71 8.68 9.51 sec.
    
    02- 54 C 04-05-24 22:53:41   LB   76.5 0.5   8  9.6   AA, 4->i
    Timings: 9.36 9.82 10.90 8.49 9.25 8.81 10.27 9.62 sec.
    
    03-  9 C 04-05-24 20:51      LB                       S, 2
    Easy to follow and watched for 02 9 B, predicted about a minute later.
    Didn't see it; but saw 2:25.19 minutes later a S, 4 sat not quite on
    the right track. So I doubt I saw 02 9 B.
    
    03- 54 A 04-05-24 23:05      LB                       var 5->6
    03- 54 B 04-05-24 23:03:38.19LB  115.2 0.5   8 14.4   AA, 3->i
    Timings: 13.77 23.11 13.60 14.73 14.90 17.42 17.68 sec.
    On time and on track using Ted's latest TLE's
    
    03- 54 C 04-05-24 23:05      LB                       almost S, 5
    Followed several seconds behind 03 54 A
    
    04-  2 A 04-05-24 21:41:35.86LB                       S, 4
    Progress-M1 11 was followed by ISS 2:30.35 minutes later.
    ISS was S, mag 2
    
    04- 12 C 04-05-24 21:04:14   LB  123.5 0.2  33  3.74  AA, 3->i
    Timings:  3.39 4.14 3.58 3.84 3.66 4.12 3.60 4.04 3.60 3.90 3.48
    4.05 3.62 3.70 3.39 4.14 3.30 3.97 3.79 3.60 3.39 4.41 3.47 4.23 
    3.08 3.95 3.56 3.72 3.71 3.81 3.70 4.37 3.20 sec.
    Possible flashes from multiple surfaces, regarding the different
    timings.
    
    04- 12 C 04-05-24 22:41:46   LB  108.5 0.2  29  3.74  FF,4->i, ssm, 5
    Timings:  3.77 3.67 3.73 3.83 3.66 3.77 3.57 3.85 3.61 3.89 3.78 
    3.72 3.72 3.91 3.65 3.76 3.73 3.70 3.72 3.74 4.23 3.24 3.75 3.81
    3.62 3.81 3.77 7.45 sec.
    A more equal pattern than on the first pass. Just one flash timed late
    and 1 flash not seen at the end.
    
    92-  8 B 04-05-24 22:03:45   LB  115.0 0.5   4 28.7   FA, 5->i
    Timings: 17.88 9.29 17.55 14.30 15.44 10.93 17.77 11.81 sec.
    Combined pattern?
    
    94- 45 B 04-05-24 22:11      LB                       1 fl, 5->i
    Just saw 1 flash and then probably lost the sat.
    
    97- 34 C 04-05-24 21:23:54   LB   31.2 0.2  24  1.30  FF, 4->i
    Timings:  1.61 1.58 2.06 1.48 1.44 1.28 1.43 1.06 1.17 1.29 1.23
    1.20 1.57 1.38 1.39 1.30 1.14 1.19 1.28 1.18 1.14 1.42 1.40 sec.
    
    97- 77 B 04-05-24 21:56:47   LB  225.8 0.2  16 14.11  AA,5->i,->FF,3->i
    Timings: 28.11 16.26 6.30 4.30 4.06 4.52 14.18 13.89 26.68 15.31
    15.48 20.56 7.71 10.90 2.82 14.71 sec.
    The timing of 2.82 sec was a mag 1 flash. After cumulation the flash
    pattern changed.
    
    98- 43 G 04-05-24 21:20      LB                       S, 3
    
    2004: 236 obs
    PPAS: 13292 obs
    
    Greetings and clear, dark skies
    Leo Barhorst, Medemblik NL
    Cospar 4252 52.76350 N 5.09114 E 2 m ASL
    http://www.home.zonnet.nl/leobarhorst/index.html
     
    
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