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Definition of Kuiper belt object
1. Noun. Any of many minor planets in the Kuiper belt outside the orbit of Neptune at the edge of the solar system.
Definition of Kuiper belt object
1. Noun. (astronomy) A type of trans-Neptunian object (TNO) (a certain type of minor planet) that has an orbit in the Kuiper belt (between 30-50 AU) with inclinations consistent with the ecliptic. ¹
¹ Source: wiktionary.com