An Etymological Dictionary of Astronomy and Astrophysics

The component of general precession caused by the gravitational attraction of the planets on the Earth’s center of mass. It causes the equinox to move eastward by about 0’’.12 per year in the opposite direction to
the → precession of the equator. This terminology replaces → planetary precession, according to an IAU resolution adopted in August 2006.

See also: → precession; → ecliptic.