1) Asteroid or centaur 2) Ceres or Eris
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https://www.crosswordclues.com/clue/minor-planet
is an object in direct orbit around the Sun that is neither a dominant planet nor originally classified as a comet. A moon is not a minor planet because it is orbiting another body.
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http://en.wikipedia.org/wiki/Glossary_of_astronomy
A minor planet is an astronomical object in direct orbit around the Sun that is neither a planet nor originally classified as a comet. Minor planets can be dwarf planets, asteroids, trojans, centaurs, Kuiper belt objects, and other trans-Neptunian objects. The orbits of 620,000 minor planets were archived at the Minor Planet Center by 2013. The fi...
Found on
http://en.wikipedia.org/wiki/Minor_planet
Rocky body that orbits the sun; also recognized as an asteroid.
Found on
http://planetfacts.org/space-terms/
An asteroid.
Found on
http://www.braeunig.us/space/glossary.htm
Another name for an asteroid or other type of substantial body, such as a Kuiper belt object, that orbits the Sun but is smaller than a conventional planet.
Found on
http://www.daviddarling.info/encyclopedia/M/minor_planet.html
A term used since the 19th century to describe objects, such as asteroids, that are in orbit around the Sun but are not planets or comets. In 2006, the International Astronomical Union reclassified minor planets as either dwarf planets or small solar system bodies.
Found on
http://www.seasky.org/astronomy/astronomy-glossary.html
Term used to describe a large asteroid
Found on
http://www.solarspace.co.uk/Glossary3.php
planetoid noun any of numerous small celestial bodies that move around the sun
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https://www.encyclo.co.uk/local/20974
Asteroid
Found on
https://www.encyclo.co.uk/local/22784
No exact match found.
