Kuiper belt object

Etymology
, who theorized about the belt's existence.

Noun

 * 1)  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.

Translations

 * French: objet de la ceinture de Kuiper
 * German: Kuipergürtelobjekt
 * Russian: объе́кт по́яса Ко́йпера, оПК
 * Spanish: objeto del cinturón de Kuiper