1、The working projection plane is taken at the equatorial plane corresponding to the ground surface.
2、Coordination saturation is thus proved to be space saturation in the uranyl equatorial plane.
3、The Angle between the plane of the ecliptic and the equatorial plane is the obliquity of the ecliptic.
4、Because of its oblate shape, the moment of inertia of the earth is a maximum about the polar axis and minimum about an axis in the equatorial plane.
5、Earth is the only one of the inner planets with a large satellite, the orbit of which is neither in the equatorial plane of Earth nor in the plane in which the other planets lie.
