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- Hour_angle abstract "In astronomy and celestial navigation, the hour angle is one of the coordinates used in the equatorial coordinate system to give the direction of a point on the celestial sphere.The hour angle of a point is the angle between two planes: one containing the Earth's axis and the zenith (the meridian plane), and the other containing the Earth's axis and the given point (the hour circle passing through the point). The angle may be expressed as negative east of the meridian plane and positive west of the meridian plane, or as positive westward from 0° to 360°. The angle may be measured in degrees or in time, with 24h = 360° exactly. In astronomy, hour angle is defined as the angular distance on the celestial sphere measured westward along the celestial equator from the meridian to the hour circle passing through a point. It may be given in degrees, time, or rotations depending on the application.In celestial navigation, the convention is to measure in degrees westward from the prime meridian (Greenwich hour angle, GHA), the local meridian (local hour angle, LHA) or the first point of Aries (sidereal hour angle, SHA).The hour angle is paired with the declination to fully specify the direction of a point on the celestial sphere in the equatorial coordinate system.".
- Hour_angle thumbnail Hour_angle_still1.png?width=300.
- Hour_angle wikiPageID "48838".
- Hour_angle wikiPageRevisionID "598277399".
- Hour_angle hasPhotoCollection Hour_angle.
- Hour_angle subject Category:Celestial_coordinate_system.
- Hour_angle comment "In astronomy and celestial navigation, the hour angle is one of the coordinates used in the equatorial coordinate system to give the direction of a point on the celestial sphere.The hour angle of a point is the angle between two planes: one containing the Earth's axis and the zenith (the meridian plane), and the other containing the Earth's axis and the given point (the hour circle passing through the point).".
- Hour_angle label "Angle horaire".
- Hour_angle label "Angolo orario".
- Hour_angle label "Hour angle".
- Hour_angle label "Kąt godzinny".
- Hour_angle label "Stundenwinkel".
- Hour_angle label "Uurhoek".
- Hour_angle label "Ángulo horario".
- Hour_angle label "Ângulo horário".
- Hour_angle label "時角".
- Hour_angle label "時角".
- Hour_angle sameAs Hodinový_úhel.
- Hour_angle sameAs Stundenwinkel.
- Hour_angle sameAs Ωρική_γωνία.
- Hour_angle sameAs Ángulo_horario.
- Hour_angle sameAs Angle_horaire.
- Hour_angle sameAs Angolo_orario.
- Hour_angle sameAs 時角.
- Hour_angle sameAs 시각_(천문학).
- Hour_angle sameAs Uurhoek.
- Hour_angle sameAs Kąt_godzinny.
- Hour_angle sameAs Ângulo_horário.
- Hour_angle sameAs m.0d0_2.
- Hour_angle sameAs Q734439.
- Hour_angle sameAs Q734439.
- Hour_angle wasDerivedFrom Hour_angle?oldid=598277399.
- Hour_angle depiction Hour_angle_still1.png.
- Hour_angle isPrimaryTopicOf Hour_angle.
