From: alcore@uurth.com   
      
   On Thu, 10 Mar 2005, Steen wrote:   
      
   >Tonight, an Atlas 5 is going to launch an Inmarsat satellite. The launch   
   >window opens at 2142 UTC and closes 15 minutes later.   
   >   
   >-why? Why is there a launch window when launching to GEO? Couldn't a   
   >satellite destined for GEO be launched at any time?   
      
   Perhaps they are exploiting some aspect of lunar/solar tidal angle for a   
   minimum energy transfer?   
      
   Actually, It does seem awfully peculiar.  You would think that the energy   
   for launch from a particular spot to a particular Geosynchronous orbit   
   would be very nearly constant.   
      
   Gene P.   
      
   --   
   Alcore Nilth - The Mad Alchemist of Gevbeck   
   alcore@uurth.com   
      
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