Kuiper belt object

/ˈkaɪpəɹ/

Kuiper belt object

English Noun

Definition

A trans-Neptunian object (TNO) (a type of minor planet) that has an orbit in the Kuiper belt (between 30-50 AU) with inclinations consistent with the ecliptic.

Etymology

Named after Gerard Kuiper, who theorized about the belt's existence.