BD PPAS observations 2008 February

From: Bram Dorreman (bram.dorreman@gmail.com)
Date: Mon Mar 03 2008 - 21:26:44 UTC

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    Observations of satellites with (more or less) periodic brightness
    variations. All observations by 7 x 50 binoculars.
    The reported times are those of the last timed maximum.
    
    yy-nnncc yy-mm-dd hh:mm:ss.s ooo sss.s s.s nnn ff.fff comments
    65- 34 A 08-02-17 19:53:05.7 BD  136.2 0.1  62  2.20  A; +8.0->inv
    66- 89 A 08-02-15 18:36:58.2 BD  133.4 0.5   2 66.7   +7.0->12.0; 3)
    73- 54 A 08-02-15 18:33:31.3 BD   69.8                Irr; +5.5->inv; 9)
    75- 43 A 08-02-15 18:09:27.0 BD  130.3 0.2            Irr; +4.5->inv; 2)
    76- 19 A 08-02-15 17:57:36.2 BD   80.4 0.1  13  6.18  F'f; +5.0->7.5
    77- 44 A 08-02-15 18:16:48.0 BD  112.4 0.1  27  4.16  F; +3.0->inv
    78- 18 B 08-02-12 18:23:06.4 BD  145.1 0.1  35  4.15  F; +6.2->inv
    79- 57 A 08-02-12 19:04:08.7 BD  189.5 0.2  11 17.2   I; 1)
    85- 79 B 08-02-12 17:49:38.7 BD   86.7 0.2   7 12.4   M; +4.8->8.0
    85- 79 B 08-02-12 19:30:37.1 BD  123.6 0.2  10 12.4   A; +5.5->inv
    85- 79 B 08-02-15 17:47:09.2 BD  193.8 0.2  16 12.1   A; +4.5->inv
    85- 79 B 08-02-17 18:18:43.6 BD  155.1 0.2   3 11.9   A
    85- 94 G 08-02-17 18:45:51.6 BD   20.3 0.5   1 20     A
    85- 94 G 08-02-18 19:40:22.8 BD   51.9 0.3   3 17.3   A
    87- 11 A 08-02-17 18:12:08.8 BD  139.8 0.3   9 15.5   A
    87- 53 A 08-02-17 05:00:10.0 BD   66.6 0.2            Irr; +5.0->6.5; 7)
    87- 60 A 08-02-17 20:02:35.0 BD   85.2 0.4   6 14.2   A; +5.2->inv
    94- 61 A 08-02-17 05:25:40.9 BD   41.7 0.1            F Irr, +5.0->7.8; 8)
    96- 71 B 08-02-27 18:45:17.4 BD  100.2 0.2   6        A; +4.5->7.0
    99- 22 C 08-02-12 18:08:57.5 BD  105.2 0.2   8 13.2   M; +2.6->inv
    99- 57 A 08-02-27 18:37:58.4 BD  109.3 0.2   5 21.9   F'_FF; +4.0->inv; 10)
    99- 64 A 08-02-17 04:23:21.9 BD   49.8                Irr; +1.0->inv; 6)
    00- 33 D 08-02-15 17:39:37.3 BD   58.8 0.2  12  4.9   A; +4.3->7.5
    00- 50 A 08-02-15 19:06:14.4 BD   72.9 0.2   9  8.1   A; +3.0->inv; 4)
    02- 36 C 08-02-17 04:01:53.8 BD   41.8 0.2  23  1.82  F'f'; +6.0->7.0
    02- 36 C 08-02-17 05:50:10.9 BD  117.6 0.2  65  1.81  A;
    03- 37 C 08-02-17 04:11:09.8 BD  121.0 0.3  10 12.1   F'f'; +5.5->6.5
    05- 48 C 08-02-15 20:04:26.7 BD   97.8 1     1 98     A; +4.8->7.5
    07- 43 C 08-02-15 19:43:55.7 BD  114.9 0.3   2 57.5   A; +7.4->inv; 5)
    07- 53 B 08-02-15 18:21:46.2 BD   40.1 0.2   9  4.5   A; +4.5->inv
    07- 53 B 08-02-18 18:37:36.1 BD   64.4 0.2  14  4.60  A; +5.0->inv
    
    1) 1979-057A timings and groupings:
      4.00 2.64 2.25 4.80 2.15 2.39      => 18.23
      3.64 2.33 2.70 4.28 2.35 2.58      => 17.88
      2.31 2.31 2.42 2.44 3.82 2.61 2.76 => 18.67
      3.88 2.65 2.46 3.71 2.82 2.12      => 17.64
      17.61                              => 17.61
      2.72 2.34 3.93 2.35 1.98 7.13      => 17.73
      2.29 4.36 2.35 2.50 3.96 2.46      => 17.92
      2.87 6.08 2.62 3.71 2.27           => 17.55
      4.05 2.73 2.46 4.14 2.60 2.27      => 18.25
      4.41 2.37 2.33 2.33 3.53 2.64 2.97 => 18.25
    
    2) 1975-043A timings:
      9.59 28.95 20.82 14.72 15.97 40.28
    
    3) 1966-089A observation using 250 mm Dobson.
      timings of the mag +7 flashes:
      63.63 69.75
      several faint flashes and round maxima in between
    
    4) 2000-050A: timings
      7.15 17.68(2) 8.05 (6.47 1.67) 8.28 6.89 8.75 7.94
    
    5) 2007-043C: near Rigel (beta Ori)
    
    6) 1999-064A: timings
      13.27 a 20.00 F+3.5 11.08 af 2.40 f 3.01 a
      prior to 1st timing occurred a flash +1
      a = round maximum
      F = bright flash
      af = round maximum immediately follwed by faint flash
    
    7) 1987-053A: timimgs
      0.99 10.49 5.07 23.49 26.59
    
    8) 1994-061A: timings
      6.62 2.69 6.50 10.80 4.16 6.73 4.42
      arc too short to find a repetition of flashes
    
    9) 1973-054A timings:
      9.73 f+6 21.56 a 2.25 f+5.5 26.85 a+6.5 9.43 f
      f = flash, a = round max.
    
    10) 1999-057A timings and groupings:
      (15.81 6.01) (11.29 5.02 5.41) (5.68 5.50 5.31 5.22)
      (10.97 5.41 5.76) (11.11 5.11 5.68)
    
    The URL explaining the format of PPAS observations :
    http://www.satobs.org/tumble/flashpm.html#PPASformat
    
    Site 4160: 51.27931 N, 5.47683 E (WGS84), 35 m
    Bram Dorreman
    
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