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Hyperion

Saturn VII

Proper NameHyperion
DesignationSaturn VII
Primary PlanetSaturn
Orbital Period21 days, 6 hours, 38 minutes
Distance from SaturnSemi-Major Axis: 1,481,010 km
Periapsis: 1,298,837 km
Apoapsis: 1,663,183 km
Eccentricity0.1230
Rotation PeriodVariable
Mean Diameter270 km
168 miles
NotesHyperion is unusual for a moon of its size in having an irregular, elongated shape. Also highly unusual is the fact that it does not rotate on a fixed axis, but instead tumbles chaotically as it circles the planet Saturn.

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