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Umbriel
Moon
Umbriel
Planet
Uranus
Mass
11.7
Semi-Major Axis
266.3
Sidereal Orbit Period
4.144177
Orbital Inclination
0.36
Orbital Eccentricity
0.005
Mean Density
1400
Geometric Albedo
0.19
Apparent Visual Magnitude
0.19
Radius
584.7
Data+Picture Copyright
N.A.S.A.
