Hour angle definitions

Hour angle

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 axi.....
Found on http://en.wikipedia.org/wiki/Hour_angle

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Hour angle

The angular distance of a celestial object measured westward along the celestial equator from the zenith crossing.
Found on http://www.braeunig.us/space/glossary.htm

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hour angle

in astronomy, the angle between an observer`s meridian (a great circle passing over his head and through the celestial poles) and the hour circle ... [1 related articles]
Found on http://www.britannica.com/eb/a-z/h/73

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hour angle

(HA) The angle between the hour circle of a celestial object and the observer`s meridian, measured anticlockwise along the celestial equator. It is sometimes used as a coordinate in place of right ascension. See also equatorial coordinates.
Found on http://www.daviddarling.info/encyclopedia/H/hour_angle.html

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Hour Angle

The angular distance of a celestial object measured westward along the celestial equator from the zenith crossing. In effect, HA represents the RA for a particular location and time of day.
Found on http://www.encyclo.co.uk/visitor-contributions.php

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hour angle

[n] - (astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing 2. [n] - the angular distance along the celestial equator from the observer`s meridian to the hour circle of a given celestial body
Found on http://www.webdictionary.co.uk/definition.php?query=hour%20angle

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hour angle

noun the angular distance along the celestial equator from the observer`s meridian to the hour circle of a given celestial body
Found on https://www.encyclo.co.uk/local/20974

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hour angle

the angle, measured westward through 360°, between the celestial meridian of an observer and the hour circle of a celestial body. Cf. sidereal hour angle.
Found on https://www.infoplease.com/dictionary/hour-angle

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