SphOI:

Path: Orbit/OrbitMechanics

% Computes the sphere of influence ratio
 Computes the ratio of the sphere of influence to the distance between two
 bodies. Uses 2/5 power based on the argument due to Lagrange.

   m                         M
   ?-------------------------?
   |<---------- 1 ---------->|
   |----->|
     rOR

--------------------------------------------------------------------------
   Form:
   rOR = SphOI( m, M )
--------------------------------------------------------------------------

   ------
   Inputs
   ------
   m              (1,n)  Mass of planet of interest
   M              (1,m)  Mass of other planet

   -------
   Outputs
   -------
   rOR            (n,m)  Ratio of sphere of influence for m to
                         distance between the two planets

--------------------------------------------------------------------------
   References:	Wiesel, W. E., Spaceflight Dynamics, McGraw-Hill, 1988,
               pp. 288-291.
--------------------------------------------------------------------------

Children:

Common: Database/Constant
Common: Graphics/Mesh2
Math: Linear/DupVect

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