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The angle between the equatorial and orbital planes (or the rotational and orbital poles) of a body. The obliquity of the ecliptic for the Earth is the angle between the equatorial and ecliptic planes.
Reference:
Explanatory Supplement to the Astronomical Almanac. 1992. K.P. Seidelmann, Ed., University Science Books, Mill Valley, California.
NOTE:
The list of defined terms to the left is by no means exhaustive with
respect to the general subject of solar system dynamics.
The terms listed are thought to be those more commonly used on our site
and thus appropriate for inclusion on this page.
