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   Generates the transformation matrix from ECI to Rotating Libration Point
   Coordinates. Neglects perturbations due to other bodies.
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   Form:
   c = ECIToRLP( xS )
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   Inputs
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   xS          (6,1)  [r;v] of the secondary

   -------
   Outputs
   -------
   c           (6,6)  Transformation from ECI To RLP

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