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Solar
Moon

Europa

Orbital elements

Semi-major axis
0.004 AU
Eccentricity
0.009
Inclination
0.47°
Orbital period
3.6 days
Epoch · J2000
J2000

Physical properties

Mean radius
1,561 km
Mass
4.8 × 10²² kg
Density
3.013 g/cm³
Rotation period
3.55 days
Surface gravity
1.31 m/s²

Visual & observation

Geometric albedo
0.67
Representative colour
#B79A78

Discovery & classification

Discovered by
Galileo Galilei
Discovery date
8 January 1610

Sources