outer planet

Noun
  1. (astronomy) a major planet whose orbit is outside the asteroid belt (Jupiter, Saturn, Uranus, Neptune, Pluto) (synset 109404392)
    referred to in: astronomy, uranology - the branch of physics that studies celestial bodies and the universe as a whole
    is a type of: major planet, planet - (astronomy) any of the nine large celestial bodies in the solar system that revolve around the sun and shine by reflected light; Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto in order of their proximity to the sun; viewed from the constellation Hercules, all the planets rotate around the sun in a counterclockwise direction
    specific instances:
    • jupiter - the largest planet and the 5th from the sun; has many satellites and is one of the brightest objects in the night sky
    • neptune - a giant planet with a ring of ice particles; the 8th planet from the sun is the most remote of the gas giants
    • saturn - a giant planet that is surrounded by three planar concentric rings of ice particles; the 6th planet from the sun
    • uranus - a giant planet with a ring of ice particles; the 7th planet from the sun has a blue-green color and many satellites
    belongs to: solar system - the sun with the celestial bodies that revolve around it in its gravitational field

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