Obs april 11

From: Leo Barhorst (leobarhorst@zonnet.nl)
Date: Sat Apr 12 2003 - 06:21:27 EDT

  • Next message: Peter Wakelin: "SATOBS 2003 April 11/12"

    Beautifull evening, first quarter moon not too disturbing.
    Saw all six object from the last Japanese launch.
    
    01- 56 F 03-04-11 21:28:35   LB  108.5 0.2  29  3.74  FfF-F, 3(4)->i
    Was flashing again on this higher pass. Large spread in flashtimings.
    Not all of the secondary flashes timed. Using Bjorns Synodic program
    I get a better fix with P=4.75 sec, but then the number of flashes 
    doesn't fit.
    Timings: 3.96 4.84 4.63 4.25 2.95 2.96 3.37 2.95 2.73 3.58 3.26 2.27
    4.14 2.96 2.73 3.68 3.10 3.14 3.01 3.44 2.84 3.95 4.97 4.66 5.34
    3.44 5.46 4.92 4.97 sec.
    
    02-  9 B 03-04-11 20:12      LB                       S, 5
    02- 24 A 03-04-11 19:46      LB                       almost S, 4
    02- 37 D 03-04-11 20:22:58   LB   60.4 0.5  19  3.18  AA, 6->7
    Timings: 12.45 7.73 7.72 9.66 8.29 8.19 6.40 sec.
    Best fit with Synodic is P=3.20 sec.
    
    03-  9 A 03-04-11 20:50      LB                       S, 4.5
    03-  9 B 03-04-11 21:09      LB                       var, 4->6, lp
    03-  9 C 03-04-11 20:59      LB                       S, 2
    03-  9 D 03-04-11 20:32:57.04LB                       S, 4
    03-  9 E 03-04-11 20:31:15.44LB                       S, 6
    03-  9 F 03-04-11 20:34:22.02LB                       S, 5
    03- 9 E, d and F followed shortly after each other and were timed 
    while passing between the same two stars. Object B was variating
    in brightness with a long period.
    
    78- 18 B 03-04-11 21:53:28   LB  111.9 0.2  30  3.73  FF, 4->i
    Timings: 3.63 3.61 3.72 3.66 3.67 3.65 3.71 3.72 3.75 3.89 3.67
    3.83 3.67 3.91 3.87 3.76 3.90 3.73 4.01 3.62 3.75 4.42 3.29
    3.48 3.73 3.62 3.70 3.77 3.56 3.60 sec.
    With Synodic it get P=3.75
    
    82- 25 A 03-04-11 21:02      LB                       S, 5
    84-106 F 03-04-11 20:26:00   LB                       S, 5.5
    84-123 A 03-04-11 20:19:04   LB   53.4 0.5   2 26.7   AA, 5->7
    87- 49 B 03-04-11 20:55:56   LB   90.9 1.0   3 30.3   MM, 4->i
    Timings: 33.98 56.90 sec. Dtm due to long, flat maximum.
    
    88- 78 A 03-04-11 21:18:14   LB   38.7 0.2  32  1.21  FF, 4->i
    Timings: 2.33 1.57 1.53 1.36 1.15 1.77 4.56 12.28 12.10 sec
    At first the flashes were dtm, but the last two timings were 
    each over 10 periods.
    
    94- 23 B 03-04-11 20:43      LB                       S, 5
    96- 17 B 03-04-11 20:41      LB                       almost S, 5
    99- 39 B 03-04-11 19:57      LB                       S, 3
    
    2003: 141 obs
    PPAS: 12533 obs
    
    Greetings and clear, dark skies
    Leo Barhorst Medemblik
    52.76350 N  5.09114 E  2 m ASL
    http://www.home.zonnet.nl/leobarhorst/index.html
    
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