Saturn IV
| Dione Statistics | |
|---|---|
| Discovered by | Giovanni Domenico Cassini |
| Date of discovery | 1684 |
| Mass (kg) | 1.05e+21 |
| Mass (Earth = 1) | 1.7570e-04 |
| Equatorial radius (km) | 560 |
| Equatorial radius (Earth = 1) | 8.7802e-02 |
| Mean density (gm/cm^3) | 1.43 |
| Mean distance from Saturn (km) | 377,400 |
| Rotational period (days) | 2.736915 |
| Orbital period (days) | 2.736915 |
| Mean orbital velocity (km/sec) | 10.03 |
| Orbital eccentricity | 0.0022 |
| Orbital inclination (degrees) | 0.02 |
| Escape velocity (km/sec) | 0.500 |
| Surface gravity (m/sec^2) | 0.223 |
| Visual geometric albedo | 0.7 |
| Magnitude (Vo) | 10.4 |
| Mean surface temperature | -186.56°C |