XPost: sci.physics   
   From: bill9north@hotmailDITCHTHIS.com.retro.com   
      
   Erik Max Francis wrote:   
      
   > I'm looking for general ways of calculating estimates of stationkeeping   
   > deltavee requirements (e.g., m/(s y)) for satellites/stations in various   
   > orbits (low, medium, high, and apostationary if relevnat) around   
   > arbitrary bodies, and at each of the five Lagrange points between each   
   > (sensible) combination of bodies.   
      
   > Obviously this is something of a tall order, but for my purposes the   
   > estimates need not be exact; within an order of magnitude or so is good   
   > enough.  I managed to find e-folding instability times for a few   
   > specific situations, but obviously 1. that doesn't answer the question   
   > generally and 2. there's more to stationkeeping than just pure e-folding   
   > time; there's also perturbations for nearby objects.   
      
   > 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.   
      
   Begin with "three body problem" on google, 13,900 hits.   
      
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