XPost: sci.physics   
   From: gneillREM@OVE.netcom.ca.retro.com   
      
   "Erik Max Francis"  wrote in message   
   news:4000B424.8A636BC1@alcyone.com...   
      
   > Could someone suggest a relatively simple algorithm to compute such   
   > things to some reasonable degree of accuracy for each of the scenarios   
   > described above?  Thanks.   
      
   Would a numerical simulation method suffice?  It's relatively   
   easy to set up a simulation of a few bodies and a "test   
   particle".  Run the thing until the station-keeping limit is   
   reached (probably a distance discrepancy?) and then look at   
   the particle's velocity and the time elapsed.   
      
   There are analytical treatments for the motion of bodies   
   at the Lagrange points in most texts on celestial mechanics.   
      
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