Glinting behaviour of USA 32 illustrated

From: Marco Langbroek (marco.langbroek@wanadoo.nl)
Date: Sun Jan 11 2009 - 19:30:48 UTC

  • Next message: Marco Langbroek: "SATOBS ML (4353), 11 Jan 2009: Lacrosse 3, USA 32, NOSS 3-2"

    Hi all,
    
    Among this evening's photographic catches (positions will follow later) was a 
    nice image of a 10 second trail of USA 32 (88-078A).
    
    The image illustrates the brightness behaviour of this satellite well, showing 
    repeated glints (at least 8 in the 10.05s exposure). The image with the glints 
    visible, as well as a brightness profile derived from it which shows the glints 
      very well as spikes in the diagram, can be seen at:
    
    http://sattrackcam.blogspot.com/2009/01/glinting-behaviour-of-usa-32-88-078a.html
    
    (click on the images in the post to open them at larger size)
    
    The glinting sequence I derived from the image is:
    
    1) a series of 4 or more glints at a regular 1.20 second interval;
    2) followed by 2.0 seconds of no, or much less bright glints;
    3) followed again by 4 or more glints at a regular 1.20 second interval.
    
    - Marco
    
    -----
    Dr Marco Langbroek  -  SatTrackCam Leiden, the Netherlands.
    e-mail: sattrackcam@wanadoo.nl
    
    Cospar 4353 (Leiden):   52.15412 N, 4.49081 E (WGS84), +0 m ASL
    Cospar 4354 (De Wilck): 52.11685 N, 4.56016 E (WGS84), -2 m ASL
    SatTrackCam: http://home.wanadoo.nl/marco.langbroek/satcam.html
    Station (b)log: http://sattrackcam.blogspot.com
    -----
    
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