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Adrastea is the second innermost known satellite of Jupiter. Adrastea lies within Jupiter's main ring along with Metis, and may be the source of material for the ring.


Mass: 1.91e+16 kg
Radius: 12.5x10x7.5 km
Mean density: 4.5 gm/cm^3
Escape velocity: 0.0143 km/sec
Visual geometric albedo: 0.05

Orbital parameters

Mean orbital distance: 128,971 km
Orbital period: 0.298260 days
Mean orbital velocity: 31.45 km/sec
Orbital eccentricity: 0.0000
Orbital inclination: 0.0000 degrees