Theory on GRACE flares?

From: Ed Cannon (ecannon@mail.utexas.edu)
Date: Wed Aug 13 2003 - 22:41:07 EDT

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    Anyone have a theory on how the trapezoidal Grace satellites 
    flare?  My guess now is that their flares have to be off the 
    two trapezoidal ends.  I don't see how the other four sides
    could reflect down to Earth:
    
    http://www.csr.utexas.edu/grace/spacecraft/config.html
    
    The Globalstars have a similar trapezoidal body, but 
    apparently it's upside-down compared to GRACE, and they have 
    solar "wings":
    
    http://www.floridatoday.com/space/explore/uselv/delta/d253/d253j.jpg
    
    I think I finally found why Globalstars often seem brighter 
    than they ought to be; apparently the body is covered with
    kapton insulation:
    
    http://www.floridatoday.com/space/explore/uselv/delta/d253/d253g.jpg
    
    Raining here....  I'm in a library hoping I can go home in 
    a while; didn't bring an umbrella with me today.
    
    Ed Cannon - ecannon@mail.utexas.edu - Austin, Texas, USA
    
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