Definition:Equatorial Coordinate System/Also defined as
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Equatorial Coordinate System: Also defined as
The equatorial coordinate system can also be defined such that a point on the celestial sphere is located by means of:
- the hour angle $t$, which is the angular distance measured westwards along the celestial equator from the vernal equinox, instead of the right ascension
- the north polar distance, which is the complement $90 \degrees - \delta$ of the declination $\delta$.
Also see
- Results about the equatorial coordinate system can be found here.
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): equatorial coordinate system
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): equatorial coordinate system