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Equatorial Coordinate System
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Geliefert zwischen Mi., 26.11.2025 und Do., 27.11.2025
Details
The Equatorial Coordinate System is a popular method of mapping celestial objects. It functions by projecting the Earth's geographic poles, equator, and ecliptic onto the celestial sphere. This allows stars to be cataloged by objective locations (as opposed to the horizontal coordinate system, commonly known as an altitude-azimuth or azimuth- elevation system, in which stars' coordinates are dependent on the observer's location on Earth). The projection of the Earth's equator onto the celestial sphere is called the celestial equator. Similarly, the projections of the Earth's North and South geographic poles become the North and South celestial poles, respectively. There are two systems to specify the longitudinal (longitude-like) coordinate: the hour angle system is fixed to the Earth like the geographic coordinate system. The right ascension system is fixed to the stars, thus, during a night or a few nights, it appears to move across the sky as the Earth spins and orbits under the fixed stars. Over long periods of time, precession and nutation effects alter the Earth's orbit and thus the apparent location of the stars.
Weitere Informationen
- Allgemeine Informationen
- GTIN 09786130755867
- Editor Frederic P. Miller, Agnes F. Vandome, John McBrewster
- Genre Physik & Astronomie
- EAN 9786130755867
- Format Fachbuch
- Titel Equatorial Coordinate System
- Herausgeber Alphascript Publishing
- Anzahl Seiten 76
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