Category:Ecliptic Coordinate System

This category contains results about Ecliptic Coordinate System.
Definitions specific to this category can be found in Definitions/Ecliptic Coordinate System.

The ecliptic coordinate system is an astronomical coordinate system in which measurements are based on the ecliptic.

Hence a point on the celestial sphere is located by means of $2$ angular measurements:

the celestial longitude $\lambda$ is the angular distance measured eastwards along the ecliptic from the vernal equinox

the celestial latitude $\beta$ is the angular distance measured north or south of the ecliptic.