InSat 2D

From: Björn Gimle (b_gimle@algonet.se)
Date: Fri Nov 22 2002 - 15:47:14 EST

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    I have found via Google in SeeSat-L archives three observation periods of InSat
    2D, and built a solution for axis and cone angle with a StdDev of 0.2 degrees.
    However, zero precession over nearly three years is extremely unlikely.
    My axis is at RA 20:07, dec +76, cone angle 85.7 degrees.
    
    This would give flash events tonight near RA 16:30 dec. -3 and 20:20, dec. -7
    for Ed's latitude.
    Ten degrees further north, I get 17:30 -5 and 19:45 -8
    So, the solution is very sensitive to this 1.5 degree displacement
    of the track, but it also raises hope of a long event.
    The observations (start-end of "bright" flashes) were:
    
                            Flash coord.
    2000-02-27 01:59 Ed0002 13:19 -3.15
    2000-02-27 02:03 Ed0002 13:23 -3.2
    2000-08-21 03:58 Ed0008 02:20 -7.1
    2000-08-21 04:03 Ed0008 02:24 -7.1
    2001-10-17 03:39 Ed0110 07:33 -3.25
    2001-10-17 04:08 Ed0110 08:02 -2.9
    
    As a small counterweight to my doubts on zero precession, the solution DOES
    explain the long duration in Oct.2001 (but not the short in Feb.2000)
    
    -- 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         --
    
    
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