Re: to flash or not to flash?

From: Tristan Cools (t.cools@yucom.be)
Date: Tue Apr 24 2001 - 14:32:06 PDT

  • Next message: Carl H. Schmid: "ISS/Shuttle"

    At 15:39 24/04/01 +0100, you wrote:
    
    >>Yesterday evening I've seen (without any doubt...) the SL-16: same time,
    >>same location, same schedule as per H-A prediction but with a continuous
    >>light instead of flashing.
    
    >or we happened to be close to the spin axis.
    >I that case, even a spinning satellite wouldn't
    >show light fluctuations under certain conditions.
    
    Take a look at this picture:
    
    http://www.satimage.bwgs.yucom.be/images/94074b.JPG
    
    A satellite can transform from a steady to a flashing object during one pass.
    
    However, these are the latest PPAS entries for 99-39B/25861
    
    99- 39 B 01-03-13 20:04:20   PDV  77.3 2     2 38.7
    99- 39 B 01-03-19 21:02:15   PDV  85.7   2   2 42.8 
    99- 39 B 01-04-11 21:12      RE                30     2.8->5.7
    99- 39 B 01-04-12 20:03:23   LB  218.1 0.5   2 109.1  AA, 2->7, note 6
    
    It has become an object with a long tumbling period which is greater than
    30s at this moment.
    
    You can always check flashing and steady satellites at the BWGS pages at:
    
    http://www.satimage.bwgs.yucom.be/bwgs/bwgs.htm
    
    or
    
    http://gallery.uunet.be/tcools/satimage/bwgs/bwgs.htm
    
    
    Greetings,
    
    
    Tristan Cools t.cools@yucom.be
    Belgian Working Group Satellites(BWGS)
    
    Ryckevelde:  3.2856E/51.2045N - OBS place 2
    Brugge:      3.2166E/51.2104N - OBS place 3(home)
    
    Primary site  http://gallery.uunet.be/tcools/satimage/index.htm
    Mirror site   http://www.satimage.bwgs.yucom.be/index.htm
    
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    This archive was generated by hypermail 2b29 : Tue Apr 24 2001 - 21:31:20 PDT