ManeuverCost:

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   Finds the cost for going from startNode to nextNode.
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   Form:
   cost = ManeuverCost( startNode, nextNode, d )
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   ------
   Inputs
   ------
   startNode (1,1) Id of start location
   goalNode  (1,1) Id of next location
   d         (1,1) Data structure
                   .rA     (1,:) Node right ascension
                   .dec    (1,:) Node declination
                   .v      (3,:) Velocity

   -------
   Outputs
   -------
   cost      (1,:)  List of nodes in path 

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Children:

Common: Transform/RaDec2U