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Adrastea


Adrastea is the second of Jupiter's satellites. It is one of the smallest moons in the solar system. Metis and Adrastea orbit inside the synchronous orbit radius and inside the Roche limit. They are small enough to avoid tidal disruption but their orbits will eventually decay.


Orbital Distance:   128,971 km (circular orbit)
Eccentricity:       0.000
Local Year:         0.298 days (7h 9m 7.2s)
Orbital Velocity:   31.473 km/s
Inclination:        0.000°
Local Day:          0.298 days (7h 9m 7.2s)
Axial Tilt:         n/a

Diameter:           23 km x 20 km x 15 km
Composition:        Rock
Density:            4.56 g/cm3
Mass:               1.91 x 1013 tonnes (3.2/billion earths)
Gravity:            0.001 G
Escape Velocity:    0.016 km/s
Area:               1,000 km2
Surface Material:   Rock
Atmosphere:         None
Pressure:           None
Albedo:             0.05
Temperature:        ???°C

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