Thrymr

Also known as Saturn XXX, S/2000 S 7, Saturn XXX Thrymr, Thrym, Тхумр

moon of Saturn

Key facts

Designation: Saturn XXX
Pronunciation: / ˈ θ r ɪ m ər / THRIM -ər
Named after: Thrymr
Alternative names: S/2000 S 7
Adjectives: Thrymian ( / ˈ θ r ɪ m i ə n / THRIM -ee-ən )
Semi major axis: 20 474 000 km
Orbital period sidereal: −1094.3 days
Inclination: 176.0°
Satellite of: Saturn
Group: Norse group
Mean radius: 4 +50%, −30% km
Synodic rotation period: 38.79 ± 0.25 ? h
Albedo

Article

Thrymr, or Saturn XXX, is a natural satellite of Saturn. It was discovered by Gladman and colleagues in 2000, and given the temporary designation S/2000 S 7. Its name comes from Norse mythology, where Thrymr is a Jotun.

Thrymr is about 8 kilometres in diameter, and orbits Saturn at an average distance of 20,810 Mm in 1120.809 days. It may have formed from debris knocked off Phoebe. The Thrymian orbit is retrograde, at an inclination of 175° to the ecliptic (151° to Saturn's equator) and with an eccentricity of 0.453. Like Ijiraq and Kiviuq, Thrymr's orbit overlaps strongly with Phoebe's such that it is likely to collide with it in the future.