Proteus

Proteus is a moon of the planet Neptune.

Facts About Proteus:

Proteus is the second-largest moon of Neptune, after Triton.
It is the 6th moon by distance from Neptune.
It is the largest of Neptune's inner moons.
It has an unusual polyhedron shape.
It was discovered in 1989 using images from the Voyager 2 space probe.

Classification: Moon (orbiting Neptune)

Names: Proteus, Neptune VIII, S/1989 N1

Discovered:  1989 by Voyager Science Team
Naming:  Named after Proteus, the sea god in Greek mythology.
Magnitude:  19.7000 (app)
Diameter:  420 km
Mass:  4.4e+19 kg
Semi-major axis:  117,647 km
Orbital Speed:  7.6230 km/s
Eccentricity:  0.00053000
Albedo:  0.0960
Volume:  34000000 km³
Density:  1.3000 g/cm³
Surface Area:  554176.93 km²
Escape Velocity:  0.1700 km/s
Adjective:  Protean

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