💡 Words with a Similar Meaning to "Planetary object"
Found via reverse dictionary — words that share a conceptual meaning.
| Word | Definition |
|---|---|
| planetoidnoun | (astronomy) Any planetary body, including classical planets and moons: a planetary-mass object |
| dwarf planetnoun | (astronomy) A planetary (world-like) body of the Solar system, that directly orbits the Sun like the classical planets but does not gravitationally dominate other bodies in the region of its orbit. |
| planetnoun | (astronomy, current) A body which is massive enough to be in hydrostatic equilibrium (generally resulting in being an ellipsoid) but not enough to attain nuclear fusion and, in IAU usage, which directly orbits a star (or multiple star) and dominates the region of its orbit; specifically, in the case of the Solar system, the eight major bodies of Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. |
| planemonoun | (astronomy) an astronomical object with enough mass to achieve hydrostatic equilibrium, but not enough to initiate core fusion at any time in its existence. That is, it is rounded in shape and is smaller than a star. Planemos include planets, dwarf planets, and the larger moons of the Solar System (satellite planets), but also sub-brown dwarfs and rogue planets between the stars. |
| minor planetnoun | (astronomy) An astronomical object in direct orbit around the Sun that is not a planet or a comet. |
| planetesimalnoun | (astronomy) Any of many small, solid astronomical objects that orbit a star and form protoplanets through mutual gravitational attraction. |
| small solar system bodynoun | (astronomy) A body in the Solar System other than a planet, dwarf planet or natural satellite. |
| satellite planetnoun | (astronomy) A moon of planetary mass; a natural satellite which would be considered a planet or dwarf planet if it were in direct orbit of the Sun. |
| major planetnoun | (astronomy) Any of the 8 celestial bodies which orbit the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune (a celestial body that fits the 2006 IAU definition of planet). |
| quasi-planetnoun | (astronomy) a body comparable to a planet, but not a planet, such as a dwarf planet or a planetary-mass moon |
| mean planetnoun | (astronomy, celestial mechanics) An imaginary celestial body (corresponding to another, real, orbiting one) which orbits with constant speed along an auxiliary circle (a circle which shares a diameter with the major axis of the elliptical orbit of the corresponding real celestial body), such that its position coincides with the position of the corresponding, real celestial body when that body passes through periapsis. |
| protoplanetnoun | An astronomical object, approximately the size of the Moon, formed from the mutual gravitational attraction of planetesimals; they are thought to collide with each other and slowly form planets |
| double planetnoun | (astronomy) A planet with a moon large enough to be considered a planet, were the planet not there, having a substantial portion of the system's overall mass. |
| inner planetnoun | (astronomy, planets) Any planet of the Solar System whose orbit is located between the asteroid belt and the sun, i.e., any of Mercury, Venus, Earth, or Mars. |
| classical planetnoun | (astrology, astronomy) The seven non-fixed astronomical objects in the sky, as opposed to the fixed stars. |
| planetary systemnoun | A group of smaller bodies (such as planets or asteroids) that orbit one or more stars. |
| exoplanetnoun | (astronomy, planetology) A planet which exists outside Earth's solar system. |
| near-earth objectnoun | (astronomy) A small Solar System body (ie. asteroid, comet, or large meteoroid) whose orbit brings it into proximity with Earth's orbit. |
| interstellar planetnoun | (astronomy, planetology) a planetary-mass object which has either been ejected from its system or was never gravitationally bound to any star or other such object, and that therefore orbits the galaxy directly. |
| asteroidnoun | (astronomy) A naturally occurring solid object, which is smaller than a planet and a dwarf planet, larger than a meteoroid and not a comet, that orbits a star and often has an irregular shape. |
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