Phobos (Satellite of Mars)

Constants

•  Mean Radius:               9.2 x 13.4 km

•  Mass:                      2.01 x 10^-10 (Earth=1)

•  Density:                   1.75 (g/cm^3)

•  Gravity:                   0.0007 (Earth=1)

•  Orbit Period:              0.319 (Earth days)

•  Rotation Period:           0.319 (Earth days)

•  Semimajor Axis of Orbit:   9,738 km

•  Eccentricity of Orbit:     0.018

Phobos Nomenclature

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