RE: Japansese First Military Sat

From: Ted Molczan (molczan@rogers.com)
Date: Thu Mar 27 2003 - 21:16:13 EST

  • Next message: moriboo@jcom.home.ne.jp: "Japanese IGS Launched"

    Spaceflight Now reports that the satellites have been launched.
    
    I find two different orbits that roughly fit the stated/implied criteria:
    
    - sun-synchronous
    
    - 400 to 500 km
    
    - circular
    
    - ground track repeats after 4 days
    
    1 72000U          03087.06528000  .00010000  00000-0  39104-3 0    02
    2 72000  97.3694 157.9000 0000100   0.0000 150.0000 15.25890000    08
    
    1 72000U          03087.06528000  .00050000  00000-0  39005-3 0    06
    2 72000  97.0943 157.7000 0000100   0.0000 150.0000 15.50850000    04
    
    My guess is that both payloads will be in the first of the above.
    
    I based these orbits in part on the launches of JERS 1 and Adeos 1, so they
    should be reasonably predictive.
    
    Though the satellites are considered classified by Japan, I believe that the
    U.S.A. will issue elements for them.
    
    Ted Molczan
    
    
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