prograde motion

prograde motion

(proh -grayd) Direct motion as opposed to retrograde motion.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

prograde motion

[¦prō′grād ′mō·shən]
(astronomy)
The apparent motion of a planet around the sun in the direction of the sun's rotation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Rayleigh waves, in fact, can propagate not according to a retrograde motion (as often simplistically believed) but as a complex mix of retrograde and prograde motion (see also Tanimoto and Rivera, 2005; Malischewsky et al., 2008).
By the middle of March 710, both planets had reached the second stationary points and resumed prograde motion. In World Archaeoastronomy (Cambridge University Press, 1989; Anthony F.