An Etymological Dictionary of Astronomy and Astrophysics - English-French-Persian

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Number of Results: 2 Search : mean sidereal time

Greenwich Mean Sidereal Time (GMST)

زمان ِ اختری ِ میانگین ِ گرینویچ

zamân-e axtari-ye miyângin-e Greenwich

Fr.: temps sidéral moyen de Greenwich

The → sidereal time related to the angle between the → prime meridian and the → mean vernal equinox, measured in the plane of the equator.

→ mean; → Greenwich Meridian; → sidereal; → time.

mean sidereal time

زمان ِ اختری ِ میانگین

zamân-e axtari-ye miyângin (#)

Fr.: temps sidéral moyen

The hour angle of the mean equinox for a given observer.

→ mean; → sidereal; → time.