- albedo
- 0.64
- apoapsis
- 676938 km
- apparent magnitude
- 5.29
- density
- 3.013
- mass
- 47.986
- orbital eccentricity
- 0.009
- orbital inclination
- 0.470, 1.791
- orbital period
- 3.551181
- periapsis
- 664862 km
- radius
- 1560.8 km
- semi-major axis of an orbit
- 671100 km
- surface gravity
- 1.314
- temperature
- 50, 102, 125
- time of discovery or invention
- 7 January 1610