Alternate Definitions for Apsidal motion

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Term: Apsidal motion
Definition:

Rotation of the line of apsides in the plane of the orbit in the same direction as the revolution of the secondary body. The major axis of the Earth's orbit rotates by 11.6 arcseconds per year.

Created 2023.04.16
Last Modified 2023.04.16
Contributed by Ryan McGranaghan
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