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Phobos
Moon
Phobos
Planet
Mars
Mass
10.6
Semi-Major Axis
9378
Sidereal Orbit Period
0.31891
Orbital Inclination
1.08
Orbital Eccentricity
0.0151
Mean Density
1900
Geometric Albedo
0.07
Visual Magnitude
11.8
Apparent Visual Magnitude
11.3
Data+Picture Copyright
N.A.S.A.
