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Adrastea: Facts & Figures
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Discovered By
D. Jewitt,
E. Danielson
Voyager 2
Date of Discovery
1979
Orbit Size Around Jupiter (semi-major axis)
Metric: 129,000 km
English: 80,157 miles
Periapsis (closest)
Metric: 128,768 km
Apoapsis (farthest)
Metric: 129,232 km
Orbit Period (Length of Year)
0.298 Earth days
Orbit Circumference
Metric: 810,530.25 km
Average Orbit Velocity
Metric: 113,329.2 km/h
Orbit Eccentricity
0.0018
Orbit Inclination
0.054
Mean Radius
Metric: 8.2 km
By Comparison: 13 x 10 x 8 km, tri-axial
Equatorial Circumference
Metric: 51.5 km
Volume
Metric: 2,310 km3
Mass
Metric: 7,493,342,165,485,970 kg
Scientific Notation: 7.4933 x 1015 kg
Density
Metric: 3 g/cm3
Surface Area
Metric: 844.96 km2
Surface Gravity
Metric: 0.007 m/s2
Escape Velocity
Metric: 40 km/h
English: 25 mph
Scientific Notation: 11 m/s
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Last Updated: 25 Apr 2012