Re: North Korea satellite: NOTAMs inconsistent withclaimedsun-synchronous orbit

From: Phillip Clark (phillipclark@btinternet.com)
Date: Sun Apr 08 2012 - 17:49:27 UTC

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

    Actually, after my posting someone from Spaceflight Now contacted me about 
    this.   I cannot recall which satellite is was other than it was one of the 
    Yaogan reconnaissance payloads, around 18-24 months ago.   The satellite was 
    launched to a retrograde orbit which clearly - from the altitude - wasn't 
    Sun-synchronous.   But Spaceflight Now reported it as being a 
    Sun-synchronous launch.   I contacted Spaceflight Now about the error and 
    reply that I got was the one I previously quoted.
    
    I couldn't be bothered to argue with them.
    
    Phillip Clark
    
    
    ----- Original Message ----- 
    From: "Chris Jones" <clj@panix.com>
    To: <seesat-l@satobs.org>
    Sent: Sunday, April 08, 2012 6:07 PM
    Subject: Re: North Korea satellite: NOTAMs inconsistent 
    withclaimedsun-synchronous orbit
    
    
    > On Sun, 8 Apr 2012 09:01:57 +0100 "Phillip Clark"
    > <phillipclark@btinternet.com> wrote:
    >
    >> You may wish to consider that many people consider any retrograde orbit 
    >> is
    >> Sun-synchronous.   I know that this is the policy of Spaceflight Now, the
    >> online news site.
    >
    > Wow, really?  Do they consider the latest NROL satellite (inclination 
    > around
    > 123 degrees) sun-synchronous?  How about the Ofeq satellites (inclinations
    > around 143 degrees)?
    >
    > I can see being sloppy with satellites with inclinations closer to polar
    > (though I still think it's uncalled for, when all you have to do to be 
    > correct
    > is to say "near polar" or "near sun-synchronous"), but in the case of
    > the other examples I mention, it's past being sloppy and into being wrong.
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    > 
    
    
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