| Term: | GSE |
| Definition: |
Geocentric Solar Ecliptic - A coordinatesystem where the X axis is from Earth to Sun. Z axis is normal to theecliptic, positive northward. See Russell, 1971. |
| Term: | GSE |
| Definition: |
The geocentric solar ecliptic system (GSE) has its X-axis pointing from the Earth towards the Sun and its Y-axis is chosen to be in the ecliptic plane pointing towards dusk (thus opposing planetary motion). Its Z-axis is parallel to the ecliptic pole. Relative to an inertial system this system has a yearly rotation. |