SPOT 3 and USA 129 flashes

From: Bjoern Gimle (b_gimle@algonet.se)
Date: Sat Aug 26 2000 - 02:48:47 PDT

  • Next message: Leo Barhorst: "Obs 25-26 Aug (+Superbird A)"

    A perfect night on our dark country site, but I left my stopwatch
    behind in Stockholm, so I just looked for extraordinary flashes,
    that I could time with my wristwatch, and memorize for a few minutes.
    
    SPOT 3 flashed to negative magnitude several times - the best two
    were probably 19:13:10 and 19:13:54 UTC 2000-08-25 (lap=44 s)
    at RA 19:24, dec. +18 and 19:06 +34 from predictions.
    
    USA 129 flashed to between mag.-2 and -5 too many times to count them,
    and memorize the times! With reasonable certainty these were the best:
    19:26:27    0         20:43    +17    P
    19:26:46    +19 s     20:48    +28.5  s
    19:27:06    +20       20:57    +55    t
    19:27:10    +4        21:00    +49    s
    19:27:14    +4        21:03    +52.5  P
    19:28:01    +47       05:59    +81.5  P
    19:28:50    +49       07:57    +58    P
    
    I have not seen a pattern in the POSITIONS of previous flashes, but
    there seems to be a 24 sec period ( 25 sec on Aug.20 ) of primary
    flashes (P) with secondaries (s) 4 seconds before, and tertiaries
    (t) 8 seconds before.
    
    Since it has also been seen steady, this may represent the normal
    rate of reorientation/scanning rather than a rotation period.
    
    
    -- bjorn.gimle@tietotech.se (office)                         --
    -- b_gimle@algonet.se (home)  http://www.algonet.se/~b_gimle --
    -- COSPAR 5919, MALMA,    59.2576 N, 18.6172 E, 23 m         --
    -- COSPAR 5918, HAMMARBY, 59.2985 N, 18.1045 E, 44 m         --
    -- SeeSat-L / Visual Satellite Observer Home Page found at   --
    -- http://www2.satellite.eu.org/satintro.html      --
    
    
    
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    This archive was generated by hypermail 2b29 : Sat Aug 26 2000 - 02:57:57 PDT