IGS 1B tumbling?

From: Marco Langbroek (marco.langbroek@wanadoo.nl)
Date: Wed Apr 18 2007 - 18:04:52 EDT

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    Hi all,
    
    Just had a good visible pass of IGS 1B (03-009B) and this time could easily see 
    it for the first minute after shadow exit around 21:53 UTC. Initially it was +2.
    
    I noted a clear irregular variation in brightness in the minute following shadow 
    exit, it slowly but clearly waxing and waning in brightness a number of times 
    with an amplitude of say one-half to one magnitude. This is unlike its steady 
    brightness in previous years, so I reckon it is now indeed tumbling after its 
    power failure recently.
    
    I catched a number of other objects as well, including a great USA 186 flare 
    photograph. Positions will follow later.
    
    - 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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