Proteus (Satellite of Neptune)

Constants

•  Mean Radius:               288 km

•  Mass:                      ? (Earth=1)

•  Density:                   ? (g/cm^3)

•  Gravity:                   ? (Earth=1)

•  Orbit Period:              1.12 (Earth days)

•  Rotation Period:           1.12 (Earth days)

•  Semimajor Axis of Orbit:   117,640 km

•  Eccentricity of Orbit:     < 0.001

Proteus Nomenclature

Official names of features on Proteus as approved by the International Astronomical Union.