RE: North Korea satellite: NOTAMs inconsistent with claimed sun-synchronous orbit

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Thu Dec 13 2012 - 23:39:12 UTC

  • Next message: Jonathan McDowell: "Re: North Korea satellite: NOTAMs inconsistent with claimed sun-synchronous orbit"

    Brian Weeden wrote:
    
    > Apologies for resurrecting an old thread, but I would just like to point
    > out that Ted's original theory from the April launch attempt (the North
    > Korean's couldn't launch into SSO directly) was spot-on.  It appears that
    > they did in fact do a dog leg to hit a sun-sync inclination, just with the
    > third stage instead of the first. That I think caught us all by surprise
    > because it's a very sophisticated operation.
    
    Thank you, Brian, but it was Jonathan McDowell who showed the way on the dog-leg issue:
    
    http://satobs.org/seesat/Apr-2012/0087.html
    
    Bob Christy also corrected me on a significant misinterpretation of the ground track plots generated by North Korea,
    which was key to producing the reliable search TLE that I ended up posting.
    
    Ted Molczan
    
    
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