Equatorial coordinate system synonyms
Part of speech:
The coordinate system in which a celestial object's position is described in terms of its altitude and azimuth . Like celestial latitude and longitude, and declination and right ascension, the altitude and azimuth coordinates are used to map objects in the sky. Unlike the other two systems, which are oriented to fixed features of the celestial sphere, the altazimuth system is based solely on an observer's location on the Earth, making it the most practical system for use in celestial navigation or surveying. Altitude can be determined using a sextant, and calculation of an observer's geographic location can then be determined using a chronometer and tables of star positions contained in a special almanac.
The coordinate system in which a celestial object's position on the celestial sphere is described in terms of its celestial latitude and celestial longitude , measured with respect to the ecliptic . Celestial latitude is measured in degrees north or south of the ecliptic, and celestial longitude is measured in degrees eastward from the vernal equinox . Because the ecliptic is fixed among the stars (that is, it is unaffected by the precession of the Earth's axis), an object's celestial latitude does not alter over time. However, due to the gradual precession of the equinoxes westward along the ecliptic, an object's celestial longitude increases by about 1.4° each century. The ecliptic system is used by astronomers especially in describing the position of objects within the solar system.
Find another word for equatorial coordinate system. In this page you can discover 2 synonyms, antonyms, idiomatic expressions, and related words for equatorial coordinate system, like: altazimuth coordinate system and ecliptic coordinate system.