Re: Japansese First Military Sat

From: Willie Koorts (wpk@saao.ac.za)
Date: Fri Mar 28 2003 - 02:28:14 EST

  • Next message: Ted Molczan: "RE: Japansese First Military Sat"

    On Fri, 28 Mar 2003, [ISO-2022-JP] $B<i!!?.?M(B wrote:
    
    > Tanegashima Island, which is located off Kagoshima City in southern Japan.
    > The H2A rocket will carry two IGSs(Information Gathering Satellites) into
    > a Sun-synchronous sub-recurrent orbit, which is a circular polar orbit.
    > The altitude of the orbit is estimated to be 400-500 km. The orbit is
    > designed to return to the same point every 4 days.
    
    If I may ask a stupid question, I assume "sub-recurrent" refers to "return 
    to the same point every 4 days".  Correct?  If not, can someone please 
    explain a sub-recurrent orbit to me.
    
    Thanks
    Willie
    
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