Lacrosse 5 flare, irregular brigthness

From: Marco Langbroek (
Date: Mon Nov 13 2006 - 14:00:40 EST

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    An hour ago I observed Lacrosse 5 (05-016A) at its 17:55 UTC pass.
    Positions will follow later.
    The satellite showed a rather irregular brightness behaviour during this pass. 
    While was I setting up my camera it made a short bright flare to mag. 0 low in 
    the west at about 17:53:50 UTC (+/- 10s) lasting only a few seconds. After that 
    it went back to much less brightness (mag +2 to +2.5).
    While climbing towards Vulpecula it brightened slowly to mag. +1.5 at 17:55:00 - 
    17:55:10 UTC, and I took my 1st of two photographs.
    Next I had to operate the camera for the second image, but when looking up at 
    around 17:55:30 UTC it was fainter, about +2.5.
    Between 17:55:50 and 17:56:10 UTC it brightened again to maybe +1.5 in Vulpecula 
    during a few seconds, then quickly dimmed again and  actually went out of visual 
    detection range for me just after 17:56:10 UTC. I captured the peak brightness 
    and fading part on photograph, the rapid fading near the end is apparent in it. 
      See picture at URL:
    Note that the satellite was nowhere near shadow entry at this moment: in fact, 
    it should have been approaching its maximum brightness at this moment instead of 
    - Marco
    Dr Marco Langbroek  -  SatTrackCam Leiden, Cospar 4353
    Leiden, the Netherlands. 52.15412 N,  4.49081 E (WGS84), +0 m ASL
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