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Styx

Pluto V

Proper NameStyx
Primary PlanetPluto
Orbital Period20 days, 4 hours
Distance from PlutoSemi-Major Axis: 42,393 km
Periapsis: 42,148 km
Apoapsis: 42,638 km
Eccentricity0.0058
Rotation PeriodMean 3 days, 6 hours (chaotic)
Mean Diameter11 km (7 miles); longest axis 16 km (10 miles)
NotesStyx is a small moon with an elongated shape, being some 16 km along its longest axis, but with an average diameter of only about 9 km in cross section. The moon is thought to be composed largely of water ice, and probably originated in an ancient collision between Pluto and another object.

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