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Europa: Facts & Figures
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Discovered By
Galileo Galilei
Date of Discovery
Orbit Size Around Jupiter (semi-major axis)
Metric: 671,100 km
English: 417,002 miles
Periapsis (closest)
Metric: 664,792 km
Apoapsis (farthest)
Metric: 677,408 km
Sidereal Orbit Period (Length of Year)
0.009722108 Earth years
3.551181041 Earth days
Orbit Circumference
Metric: 4,216,552.51 km
Average Orbit Velocity
Metric: 49,476.1 km/h
Orbit Eccentricity
Orbit Inclination
0.466 degree
Mean Radius
Metric: 1,560.8 km
Equatorial Circumference
Metric: 9806.8 km
Metric: 15,926,867,918 km3
Metric: 47,998,438,387,492,700,000,000 kg
Scientific Notation: 4.7998 x 1022 kg
Metric: 3.013 g/cm3
Surface Area
Metric: 30,612,893.23 km2
Surface Gravity
Metric: 1.315 m/s2
Escape Velocity
Metric: 7,293 km/h
English: 4,532 mph
Scientific Notation: 2026 m/s
Sidereal Rotation Period (Length of Day)
3.551 Earth days
By Comparison: Synchronous with orbital period
Atmospheric Constituents
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Last Updated: 22 May 2015