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Epimetheus: Facts & Figures
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Discovered By
R. Walker, J. Fountain, S. Larson
Date of Discovery
Orbit Size Around Saturn (semi-major axis)
Metric: 151,410 km
English: 94,082 miles
Periapsis (closest)
Metric: 149,926 km
Apoapsis (farthest)
Metric: 152,894 km
Sidereal Orbit Period (Length of Year)
0.001900068 Earth years
0.694 Earth days
Orbit Circumference
Metric: 951,314.25 km
Average Orbit Velocity
Metric: 57,115.4 km/h
Orbit Eccentricity
Orbit Inclination
0.351 degrees
Mean Radius
Metric: 58.1 km
By Comparison: 69 x 55 x 55 km, tri-axial
Equatorial Circumference
Metric: 365.1 km
Metric: 821,518 km3
Metric: 526,032,620,017,115,000 kg
Scientific Notation: 5.2603 x 1017 kg
Metric: 0.64 g/cm3
Surface Area
Metric: 42,419.17 km2
Surface Gravity
Metric: 0.010 m/s2
Escape Velocity
Metric: 125 km/h
Rotation Period (Length of Day)
By Comparison: Synchronous with Saturn
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Last Updated: 12 Aug 2013