Re: Obs May 18

From: Björn Gimle (b_gimle@algonet.se)
Date: Sun May 23 2004 - 14:23:09 EDT

  • Next message: Russell Eberst: "MAY22-23.OBS"

    86-61A looks very interesting when graphed (using SYNODIC)
    The period (from flash 2 to 9) appears to be 1.7 s, then jumps to 2.2.
    It is unrealistically large as a synodic effect.
    But two pairs of flashes (5-6 and 7-8) also hint at 2.2 s, and plotting
    this makes me believe there are five flashing surfaces, almost
    evenly distributed in a 2.18 s period.
    On Mar.06 2.024 s gave a similar graph.
    
    97-30G: with 1.195 the residuals are distributed across the entire period,
    and the only pattern I see is every fifth flash (sometimes more often)
    indicating a (multiple of a) shorter period, 1.158 from 3-12?
    (5*) 1.133 from #4 and #14-21 ??
    The 5.66 s plot is also very interesting, since it shows FOUR coherent
    series, where EACH flash was observed, and definite phase shifts,
    since two series terminate with flash #13, and the last two start
    with #14 and #16. The implied synodic effects could mean that the
    surfaces have widely differing angles to the rotation axis and/or
    direction of motion.
    
    97-77B: 24.9 s looks quite good?
    
     (graphs available for all satellites/cases mentioned above)
    
    /Björn
    
    ----- Original Message ----- 
    >
    > What PPAS numbers mean:
    http://www.satobs.org/tumble/flashpm.html#PPASformat
    ...
    >
    > 86- 61 A 04-05-18 21:13:45   LB   37.5 0.2  18  2.08  'FFF-'F, 4->i
    > Timings: 4.65 1.82 1.78 1.72 2.10 1.68 2.15 3.79 2.24 2.48 1.74
    > 2.17 2.22 2.18 2.60 2.13 sec.
    >
    >...
    > 97- 30 G 04-05-18 22:00:36   LB   64.5 0.2  54  1.195 FF, 3->i, sm, N?
    > Timings:  2.62 2.99 2.19 3.57 1.82 3.95 1.45 4.37 1.26 4.56 1.10 4.38
    > 4.14 5.65 3.86 1.79 3.56 2.12 3.42 2.25 3.43 sec.
    > Not all sm timed.
    >
    > 97- 77 B 04-05-18 22:09:23   LB
    > AA,4->almostS,5->FF2->i
    > Timings: 13.42 10.09 6.31 74.74 19.25 13.38 18.00 3.41 14.30 14.97
    > 24.85 14.86 22.69 11.75 sec.
    > Was for more than a minute almost S, 5; than starts flashing again.
    > Difficult to get a period.
    >
    
    -------------------------------------------------------------------------
    Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive:  
    http://www.satobs.org/seesat/seesatindex.html
    



    This archive was generated by hypermail 2b29 : Sun May 23 2004 - 14:28:32 EDT