Apparent retrograde motion is the apparent motion of a planet in a direction opposite to that of other bodies within its system, as observed from a particular...

Retrograde motion in astronomy is, in general, orbital or rotational motion of an object in the direction opposite the rotation of its primary, that is...

satellites Retrograde signaling, the process where a signal travels backwards from a target source to its original source Apparent retrograde motion, the apparent...

speed and direction of the apparent motion of the Moon, Sun, and planets. In particular it explained the apparent retrograde motion of the five planets known...

astronomical phenomena of interest to astronomers are eclipses, apparent retrograde motion/planetary stations, planetary ingresses, sidereal time, positions...

its apparent retrograde motion as seen from the surface of Mercury is ~1.23°, while the Sun's angular diameter when the apparent retrograde motion begins...

being used less consistently by commercial programs. The symbol for retrograde motion is ℞, a capital 'R' with a tail stroke. An 'R' with a tail stroke...

seems to stop, before restarting in the other direction (see apparent retrograde motion). This occurs because of the projection of the planet orbit into...

separate one for each planet. To account for apparent anomalies in this view, such as the apparent retrograde motion of the planets, a system of deferents and...

from east to west along its ground track, in what is called "apparent retrograde" motion. This effect occurs because the satellite orbits more slowly...