- Thrymr (moon)
Thrymr (pronEng|ˈθrɪmər "THRIM-ər)" or Saturn XXX, is a
natural satellite of Saturn. It was discovered by Gladman, et al. in 2000, and given the temporary designation S/2000 S 7.Thrymr is about 5.6 kilometres in diameter, and orbits Saturn at an average distance of 20,810 Mm in 1120.809 days, at an
inclination of 175° to theecliptic (151° to Saturn's equator), in a retrograde direction and with an eccentricity of 0.453.Thrymr may have formed from debris knocked off of Phoebe at some point in the past.
Its name comes from
Norse mythology , whereThrymr is a Jotun or frost giant.The name was announced as Thrym in [http://cfa-www.harvard.edu/iauc/08100/08177.html IAU Circular 8177] . However, the IAU
Working Group on Planetary System Nomenclature later decided to add thenominative case ending "-r" to the root "Thrym".References
* [http://cfa-www.harvard.edu/iauc/07500/07538.html IAUC 7538: "S/2000 S 7, S/2000 S 8, S/2000 S 9"]
2000 December 7 (discovery)
* [http://cfa-www.harvard.edu/mpec/K00/K00Y15.html MPEC 2000-Y15: "S/2000 S 1, S/2000 S 2, S/2000 S 7, S/2000 S 8, S/2000 S 9"]2000 December 19 (discovery and ephemeris)
* [http://cfa-www.harvard.edu/iauc/08100/08177.html IAUC 8177: "Satellites of Jupiter, Saturn, Uranus"]2003 August 8 (naming the moon "Thrym")
* [http://cfa-www.harvard.edu/iauc/08400/08471.html IAUC 8471: "Satellites of Saturn"]2005 January 21 (correcting the name)
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