The Equatorial Coordinate System uses two measurements, right ascension and declination. Right ascension (abbreviated RA) is similar to longitude and is ... |
It extends from 0° at the celestial equator to +90° at the north celestial pole and from 0° at celestial equator to -90° at the south celestial pole. While ... |
The equatorial coordinate system is centered at Earth's center, but fixed relative to the celestial poles and the March equinox. The coordinates are based on ... Equatorial coordinate · Supergalactic coordinate system · Horizontal coordinate |
The Equatorial Coordinate System is a celestial coordinate system that is defined by the projection of Earth's equator onto the celestial sphere. |
However, the system has two shortcomings: the coordinates differ from observer to observer at the same point of time, and for the same observer at different. |
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