plutino
Noun
Meaning
plutino (plural plutinos)
(astronomy) Any planetoid in the Kuiper belt whose orbit, like that of Pluto, has a resonance of 3:2 with that of Neptune.
Examples
For instance, it would severely deplete the plutino population.
The MPC defines any object with a mean orbital radius between 39 AU and 40.5 AU to be a plutino.