Obs Aug 23-24 (with Superbird A)

From: Leo Barhorst (leobarhorst@zonnet.nl)
Date: Thu Aug 24 2000 - 11:02:40 PDT

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    A splendid summer night. In the evening I started with the last Zenit
    rocket 2000-06 B and ended with is precessor 1999-39 B.
    In the morning I did several obs before observing Superbird A again.
    At 02:38 UT MIR, 1986- 17 A, made a S, mag 2 pass.
    
    00-  6 B 00-08-23 20:10:20   LB  518.0 0.2 261  1.985 FF, 3->6
    Timings every 10th flash: 19.66 20.14 19.44 18.52 19.40 19.91
    20.02 19.54 20.26 19.17 22.56(11) 19.79 20.50 20.19 99.98
    20.03 19.80 20.07 19.94 19.39 20.17 19.51 sec
    The obs was difficult in the zenith, as the brightness differance
    wasn't great, varied between mag 3 and 4.
    00-  6 B 00-08-24 03:11:22   LB  198.3 0.2 100  1.983 FF, 3->i
    Timings every 10th flash: 19.69 19.71 20.08 19.70 20.03 19.83
    19.67 19.95 19.76 19.89 sec. Low pass in the east, very good
    measurable.
    
    65- 65 C 00-08-24 02:27:42   LB   53.3 0.2  20  2.67  FF, 5->i
    66- 56 B 00-08-23 21:24:19   LB  144.8 0.2   2 72.4   FF, 5->i, sm, 6
    69-  9 A 00-08-23 20:50:58   LB  138.5 0.2   9 15.39  Irr, FF, 3->i, sm, 5
    Timings of the bright flashes: 5.60 6.23 18.30 11.88 15.78 11.90
    3.30 12.15 8.64 7.11 14.58 15.27 15.50 sec
    
    70- 25CD 00-08-24 03:07      LB                       slowly var 5->7
    76- 19 A 00-08-24 02:23:41   LB   87.2 0.2  19  4.59  FF, 4->i, sm, 5
    Timings: 13.80 13.74 9.23 6.99 11.28 9.25 4.61 4.50 4.71 4.54 4.50 sec.
    Missed several flashes in the begin, and timed once on a sm
    
    81- 59 A 00-08-23 20:25:31   LB   93.3 0.2  13  7.17  FF, 4->i, sm, 5
    In between the sharp bright flashes there were most of the time two
    faint secondary flashes. Timings: 7.19 7.06 7.22 7.21 7.18 7.14
    7.21 7.15 7.18 6.93 7.42 7.20 7.17 sec.
    
    83- 21 B 00-08-23 20:42      LB                       S, 7
    84-109 B 00-08-23 20:28      LB                       S, 7
    87-106 B 00-08-24 02:55:25   LB  113.8 1.0   1 114    MM, 5->i
    88- 23 B 00-08-23 20:37      LB                       S, 6
    89- 41 A 00-08-24 03:25:31.66LB  332.6 0.2  29 11.47  FF, 3->i, sm, 5
    For detail see below
    
    91-  7 B 00-08-23 20:40      LB                       S, 7
    92- 38 B 00-08-23 20:57      LB                       almost S, 5
    92- 73 B 00-08-23 21:05      LB                       slowly var, 6->i
    93- 20 B 00-08-23 21:12:43   LB  101.7 0.5   2 50.9   AA, 5->i
    95-  2 D 00-08-23 21:03:04   LB   61.1 0.5   2 30.5   AA, 5->7
    96-  4 B 00-08-24 03:15:34   LB  101.4 0.5  10 10.1   AA, 4->7
    96- 25 B 00-08-24 02:32:00   LB                       S, 5
    96- 51 B 00-08-24 02:49      LB                       S, 5
    97- 64 B 00-08-23 21:18      LB                       almost S, 4
    98- 45 B 00-08-24 02:57      LB                       S, 4
    99- 22 C 00-08-24 02:42:37   LB   71.1 0.2  30  2.37  AA, 4->6
    99- 39 B 00-08-23 21:29:29   LB  163.9 0.5  20  8.20  AA, 4->i
    Timings: 7.85 8.54 8.02 7.78 7.52 7.78 8.50 9.94 7.00 9.53 7.54
    8.50 8.94 7.62 8.40 8.97 7.78 8.75 7.75 7.22 sec.
    
    99- 43 E 00-08-23 20:46      LB                       S, 4
    
    Superbird made a nice show. I started watching several minutes before
    the predicted time by Rob Matson. Suddenly the first flash appeared,
    not timed. The next bright flash was timed. Then every flash, also the fain-
    ter secondary flashes. In the middle of the obs the flashes became
    equally bright. At the end there were some very faint flashes, too faint to
    be sure to time and then a last brigth flash. Nothing was seen therafter
    as I kept on watching for several minutes.
    
     0    03:19:59.01    0
     1            -
     2    03:20:21.87    22.86
     3    03:20:33.48    11.61
     4    03:20:44.73    11.25
     5    03:20:56.23    11.50
     6    03:21:07.72    11.49
     7    03:21:19.12    11.40
     8    03:21:30.57    11.45
     9    03:21:42.18    11.61
    10    03:21:53.68    11.50
    11    03:22:05.01    11.33
    12    03:22:16.58    11.57
    13    03:22:27.92    11.34
    14    03:22:39.38    11.46
    15    03:22:50.80    11.42
    16    03:23:02.33    11.53
    17    03:23:13.91    11.58
    18    03:23:25.25    11.34
    19    03:23:36.77    11.52
    20    03:23:48.30    11.53
    21    03:23:59.61    11.31
    22    03:24:11.21    11.60
    23    03:24:22.57    11.36
    24            -
    25            -
    26            -
    27            -
    28            -
    29    03:25:31.66    69.09
    
    Greetings and clear, dark skies
    Leo Barhorst Medemblik                        777 obs in 2000
    52.767 N  5.09 E  2 m ASL                    10513 obs in PPAS
    
    
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    This archive was generated by hypermail 2b29 : Thu Aug 24 2000 - 11:03:53 PDT