Annual equation
type: Concept
contributor: AAS Frey.Katie Admin
broader: Lunar theory
definition: An irregularity in the Moon's orbit, which can amount to 11 degrees in a period of one year. It results from the Sun's disturbing effect on the motion of the Moon due to varying distance between them.
modified: 2020-11-04T22:23:35.302Z
modified: 2020-11-04T22:22:33.478Z

Lunar theory
type: Concept
narrower: Annual equation