PPAS obs 2006 Sep 19-21 BD

From: Bram Dorreman (bram.dorreman@gmail.com)
Date: Mon Sep 25 2006 - 17:12:23 EDT

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    yy-nnncc yy-mm-dd hh:mm:ss.s ooo sss.s s.s nnn ff.fff comments
    63- 14 A 06-09-19 23:26:37.2 BD  170.6 0.7   9 19.0   A'a'; +8.0->inv; note
    65-  8 A 06-09-21 02:55:26.5 BD   37.3 0.3   2 18.6   A; +7.8->inv
    65- 34 A 06-09-21 02:34:24.4 BD  153.2 0.2  13 11.8   A; +7.8->inv
    72- 89 A 06-09-21 03:40:50.3 BD  194.8 0.3   2 97.4   Irr; +3.0->inv
    73- 54 A 06-09-19 19:05:04.0 BD  158.6 0.3   4 39.7   fm; +5.0->inv; note
    76- 91 A 06-09-20 20:25:15.2 BD  119.5 0.3   7 17.1   A'A'F'; +3.0->inv
    78- 96 A 06-09-20 03:08:05.2 BD  134.1 0.2  17  7.9   a'F'a'_; +2.0->inv
    79- 50 A 06-09-19 19:47:23.5 BD  119.7 0.5   3 39.9   Irr; +5.5->inv; note
    80- 98 B 06-09-19 02:16:14.8 BD  204.2 0.2  11 18.55  A; +6.8->inv
    81- 59 A 06-09-19 03:44:48.0 BD  139.5 0.5   7 19.9   M; +7.0->inv
    83-  4 A 06-09-19 19:21:29.5 BD   91.2 1.0   3 30.4   Irr; +6.0->inv; note
    83-  4 A 06-09-20 19:21:26.6 BD  174.3 0.3   6 29.1   Irr; +4.4->inv; note
    85- 94 G 06-09-19 03:53:28.5 BD  104.0 0.3   5 20.8   A; +6.5->inv
    86- 19 B 06-09-19 01:31:02.1 BD   19.7 0.3     39.4   F; +5.0->inv; note
    86- 70 B 06-09-19 21:56:01.3 BD   60.3 0.2   3 20.1   A; +4.5->inv; note
    87- 11 A 06-09-20 02:57:14.4 BD  107.9 0.3   8 13.5   A; +3.5->7.5
    87- 11 A 06-09-20 21:08:53.6 BD  156.6 0.2  12 13.1   A; +4.2->inv
    87- 11 A 06-09-21 04:07:21.6 BD  143.9 0.3  11 13.1   A; +3.0->inv
    87- 18 A 06-09-20 03:33:54.8 BD  205.1 0.3   6 34.2   A; +6.0->inv
    87- 20 B 06-09-20 00:44:42.9 BD  117.6 0.5   2 58.8   A; +6.5->8.0
    88-  5 A 06-09-20 19:39:07.2 BD  142.4 0.3  21  6.78  A ssm; +5.8->7.3
    88-  5 A 06-09-20 21:24:35.0 BD  110.2 0.2  32  3.44  A'A'A'F'; +5.0->inv
    88-  6 A 06-09-20 02:16:27.0 BD   97.9 0.3   6 16.3   A some f; +3.0->inv
    91- 61 A 06-09-19 20:09:27.6 BD  263.8 0.2  10 26.4   A; +7.0->inv
    92- 52 A 06-09-19 02:06:12.8 BD   35.2 0.5   1 35     +0.1->inv; note
    92- 73 B 06-09-20 04:03:38,9 BD  219.3 0.5   6 36.6   A; ssm; +4.5->inv
    93- 50 A 06-09-19 20:49:51.8 BD  104.6 0.3   6 17.4   A; sf; note
    96- 29 D 06-09-21 03:02:46.6 BD  246.4 0.5   5 49.3   A(f); +2.0->inv
    97- 34 C 06-09-19 01:46:04.1 BD    8.6 0.2   6  1.4   F; +4.0->inv; note
    97- 34 C 06-09-20 01:08:32.1 BD   16.7 0.3  11  1.5   F'FF_; +7.5->inv
    99-  4 A 06-09-20 02:44:06.0 BD   81.9 0.2  16  5.1   A->F; +1.0->inv
    99- 28 C 06-09-19 20:30:19.2 BD  545.3 0.5   7 77.9   A; +7.5->inv
    99- 64 A 06-09-20 03:21:40.8 BD   80.7 0.5   2 40.4   f'A'; +3.0->5.0
    99- 64 A 06-09-21 02:07:02.8 BD   48.9 0.5   3 16.3   F'A'; +5.0->inv
    00- 14 B 06-09-21 04:37:58.6 BD   22.9 0.2   9  2.5   F; +7.0->inv; note
    01- 23 B 06-09-20 20:44:04.5 BD   61.9 0.2  15  4.42  A; +4.9->?
    03- 23 B 06-09-19 02:24:30.4 BD  112.0 0.8   1 112    A; +4.8->inv; note
    03- 37 C 06-09-19 22:14:38.1 BD  178.9 0.2  30  5.96  A; +4.5->inv
    04- 28 B 06-09-19 01:09:43.0 BD   75.7 0.2   8  9.5   A; +4.5->inv
    04- 28 B 06-09-21 01:58:15.3 BD   94.6 0.2  10  9.5   A; +4.9->inv
    04- 37 C 06-09-19 22:28:04.1 BD  132.7 0.5   2 66.4   M; +4.3->inv
    05- 42 A 06-09-19 21:34:19.5 BD                       +6.0->8.0; note
    05- 48 C 06-09-19 02:44:00.9 BD  176.6 0.3  37  4.77  A; +5.0->inv
    05- 48 C 06-09-20 01:42:04.6 BD  105.1 0.2  22  4.78  A; +6.0->inv
    
    63- 14 A 06-09-19 timings
    [12.27 5.76] [12.54 6.59] [10.32 9.01] [9.77 8.06] [10.32 8.05]
    [9.68 8.69] [9.97 9.97] [9.57 9.19] [10.64 10.18]
    
    73- 54 A 06-09-19 timings
    [19.69 11.35 8.33] [14.20 5.22 19.95] [14.19 25.57]
    [14.57 25.57]
    My grouping is arbitrary and is partly based on a flash maximum
    as last maximum within each group.
    
    79- 50 A 06-09-19 timings
    15.91 29.68 21.48 7.95 5.48 39.15
    very uncertain determination
    More observations would be very welcome
    
    83-  4 A 06-09-19 timings
    [4.39 4.23 3.59 1.61 16.43] [4.92 2.83 1.64 2.96 5.58 11.60]
    [3.73 3.66 20.43]
    My grouping is arbitrary and is partly based on a long flat maximum
    as last maximum within each group.
    
    83-  4 A 06-09-20 timings
    [16.99 11.93] [16.65 12.62] [15.60 2.27 9.58]
    [16.40 3.10 3.03 5.74 1.91] [15.57 3.15 6.77 2.87]
    [2.60 2.88 10.92 4.16 6.82 2.74]
    
    86- 19 B 06-09-19 timings
    Following the same assumption as in my previous note I timed:
    6.32 = 2 basic units (of 3.263 seconds)
    9.70 = 3 basic units
    6.41 = 2 basic units
    6.98 = 2 basic units
    sum  = 9 basic units = 29.41 seconds
    A full rotation should be 12 basic units,
    this is 12/9 * 29.41 = 39.21 seconds
    
    86- 70 B 06-09-19 timings
    [4.31 14.85] 18.63 22.53
    
    87- 20 B 06-09-20 timings
    52.35 65.22
    
    92- 52 A 06-09-19
    The concerning transit was too short to time more maxima.
    
    93- 50 A 06-09-19 timings
    [8.35 9.53] 16.34 [8.39 10.13] 15.87 [10.13 8.71] 17.13
    Alternate grouping by adding the single maximum to the
    already existing group gives an average period of 34.86
    which is more in accordance with previous determinations.
    
    97- 34 C 06-09-19
    I counted 6 trains of 3 flashes; the train-length is given
    
    00- 14 B 06-09-21
    I had the impression that the flashes I counted were the maximum
    flashes of series of very short flashes (0.3 - 0.4 seconds).
    The sky was getting light blue as sunrise was near making it
    difficult to be sure about those sort flashes.
    
    03- 23 B 06-09-19
    Flash period is becoming too long. Reason to drop it from
    the PPAS observation Program.
    
    05- 42 A 06-09-19
    Two flashes were followed by three round maxima:
    Timings: 28.08 4.98 26.42 and 15.49
    
    The URL explaining the format of PPAS observations :
    http://www.satobs.org/tumble/flashpm.html#PPASformat
    
    Bram Dorreman
    COSPAR 4160
    51° 16' 45.5" N 5° 28' 36.6" E (WGS84) 35 m
    
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