Definitions for hour angle
hour an·gle

Princeton's WordNetRate this definition:0.0 / 0 votes

1. hour anglenoun

   the angular distance along the celestial equator from the observer's meridian to the hour circle of a given celestial body

2. hour angle, HAnoun

   (astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing; the right ascension for an observer at a particular location and time of day

WikipediaRate this definition:0.0 / 0 votes

1. Hour angle

   In astronomy and celestial navigation, the hour angle is the angle between two planes: one containing Earth's axis and the zenith (the meridian plane), and the other containing Earth's axis and a given point of interest (the hour circle).It may be given in degrees, time, or rotations depending on the application. 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 celestial navigation, the convention is to measure in degrees westward from the prime meridian (Greenwich hour angle, GHA), from the local meridian (local hour angle, LHA) or from the first point of Aries (sidereal hour angle, SHA). The hour angle is paired with the declination to fully specify the location of a point on the celestial sphere in the equatorial coordinate system.

ChatGPTRate this definition:0.0 / 0 votes

1. hour angle

   Hour angle is a measure in astronomy that indicates the angular distance between the position of a celestial body and the meridian of an observer's location. It is expressed in hours, minutes, and seconds, and is measured westward along the celestial equator from the meridian point. A celestial body reaches its highest point in the sky when its hour angle is exactly zero.

WikidataRate this definition:0.0 / 0 votes

1. 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, and the other containing the Earth's axis and the given 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, the local meridian or the first point of Aries. 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.

Matched Categories

1. • Angular Distance
   • Astronomy
   • Distance

How to pronounce hour angle?

1. Alex

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How to say hour angle in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of hour angle in Chaldean Numerology is: 1

2. Pythagorean Numerology

   The numerical value of hour angle in Pythagorean Numerology is: 2

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=hour angle
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Hour_Angle
3. ^ ChatGPT
   https://chat.openai.com
4. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=hour angle