Thrymr (moon)

Thrymr (/ˈθrɪmər/ THRIM-ər) 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 or frost giant.

Thrymr is about 7 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 of 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.

Its name was announced as Thrym in IAU Circular 8177. However, the IAU Working Group on Planetary System Nomenclature later decided to add the nominative case ending -r to the root Thrym.

References

IAUC 7538: S/2000 S 7, S/2000 S 8, S/2000 S 9 December 7, 2000 (discovery)
MPEC 2000-Y15: S/2000 S 1, S/2000 S 2, S/2000 S 7, S/2000 S 8, S/2000 S 9 December 19, 2000 (discovery and ephemeris)
IAUC 8177: Satellites of Jupiter and Saturn August 8, 2003 (naming the moon Thrym)
IAUC 8471: Satellites of Saturn, January 21, 2005 (correcting the name)

Moons of Saturn

Generally listed in increasing distance from Saturn. Temporary names in italics.

Ring shepherds	S/2009 S 1 Propeller moonlets Pan Daphnis Atlas Prometheus ?(S/2004 S 6 S/2004 S 4 S/2004 S 3) Pandora

Co-orbitals	Epimetheus Janus

G Ring	Aegaeon

Inner large (with trojans)	Mimas Enceladus Tethys Telesto Calypso Dione Helene Polydeuces

Alkyonides	Methone Anthe Pallene

Outer large	Rhea Titan Hyperion Iapetus

Inuit group	Kiviuq Ijiraq Paaliaq Siarnaq Tarqeq

Gallic group	Albiorix Bebhionn Erriapus Tarvos

Norse group	Phoebe Skathi S/2007 S 2 Skoll S/2004 S 13 Greip Hyrrokkin Mundilfari Jarnsaxa S/2006 S 1 S/2004 S 17 Narvi Bergelmir Aegir Suttungr S/2004 S 12 Bestla Farbauti Hati S/2004 S 7 Thrymr S/2007 S 3 S/2006 S 3 Surtur Kari Fenrir Ymir Loge Fornjot

Rings of Saturn Cassini–Huygens Themis Chiron In fiction

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Thrymr (moon)

References

Further reading