Alfriend2El:

Path: Orbit/OrbitCoord

 Convert an Alfriend orbital element set into the standard orbital element set 
%          [a,th,i,q1,q2,W]         ->     [a,i,W,w,e,M]
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   Form:
   el = Alfriend2El( ela )
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   ------
   Inputs
   ------
   ela           (:,6) Alfriend orbital element set [a,th,i,q1,q2,W]
                          where:   th = true latitude
                                   q1 = e*cos(w)
                                   q2 = e*sin(w)

   -------
   Outputs
   -------
   el            (:,6) Standard orbital element set [a,i,W,w,e,M]
   
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Children:

SC: BasicOrbit/Nu2M

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