Key facts
- Mean diameter
- 504.2 km
- Mass
- 1.08 × 10^20 kg (1.81 × 10^-5 Earths)
- Surface gravity
- 0.113 m/s² (0.0115 g)
- Escape velocity
- 0.239 km/s
- Mean temperature
- -198 °C
- Rotation period
- 32.88 hours
- Orbital period
- 1.37 days
- Mean distance from Saturn
- 0.23802 million km
Atmosphere
Negligible or extremely thin.
Composition and structure
Rock and ice.
Discovery and exploration
Cassini flew through its plumes and detected salts, silica and organic molecules.