An Etymological Dictionary of Astronomy and Astrophysics

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equation of the equinoxes

هموگش ِ هموگانها

hamugeš-e hamugânhâ

Fr.: équation des équinoxes

The difference between → apparent sidereal time and → mean sidereal time. It is due to the nutation of the Earth's polar axis of rotation about its precessional motion. It ranges from +0.8 to +1.2 seconds. Also known as → nutation in right ascension.

An Etymological Dictionary of Astronomy and Astrophysics
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