Glinting behaviour of USA 32 illustrated

From: Marco Langbroek (
Date: Sun Jan 11 2009 - 19:30:48 UTC

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    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:
    (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.
    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
    Station (b)log:
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