Difference between revisions of "Retrograde Motion"
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Retrograde Motion
</dt>
1. Motion in an orbit opposite to the usual orbital direction of celestial bodies within a given system. Specifically,
of a satellite, motion in a direction opposite to the
direction of rotation of the primary.
</dd>
2. The apparent motion of a planet westward among the stars. Also called
retrogression.
</dd>
References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use
