any of the five planets whose orbits are outside the orbit of the earth, namely, the planets Mars, Jupiter, Saturn, Uranus, and Neptune.
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Origin of superior planet
First recorded in 1575–85; i.e., superior in distance from the sun
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British Dictionary definitions for superior planet
any of the planets (Mars, Jupiter, Saturn, Uranus, Neptune, and (formerly) Pluto) whose orbit lies outside that of the earth
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Science definitions for superior planet
Any of the planets Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto, whose orbits lie beyond that of Earth. Because these planets never come between the Earth and Sun, they do not exhibit crescent phases, only full and gibbous. Unlike the inferior planets Mercury and Venus, superior planets rise in the east and set in the west in the normal pattern of celestial objects. Compare inferior planet. See also inner planet.
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