ent
   of the velocity of the target. The stellar aberration formula
   used by this routine does not include (the much smaller)
   relativistic effects.

   Stellar aberration corrections are applied after light time
   corrections:  the light time corrected target position vector is
   used as an input to the stellar aberration correction.

   When light time and stellar aberration corrections are both
   applied to a geometric position vector, the resulting position
   vector indicates where the target &