Moons

5 of 461 recognized moons · JPL/IAU registry, reviewed 2 Nov 2026

Moon / designationSystemMean diameter
CharonPluto1,212 kmNixPluto36 kmHydraPluto37 kmKerberosPluto12 kmStyxPluto10.4 km

Diameters use volume-equivalent mean radii, including for irregular bodies. Mean orbital elements describe an orbit; they are not live positions. Missing physical measurements remain unavailable. Pluto is a dwarf planet; its five moons are included.

Sources & measurements