Kuiper Belt object (KBO) that has an orbital periods very similar to that of Pluto. Found in the inner parts of the Kuiper Belt, the orbits of a plutino is stabilized against gravitational perturbations by the 3:2 mean-motion resonance with Neptune, meaning that it orbits the Sun twice for every three orbits of Neptune.

Some or all content above used with permission from J. H. Wittke.