Fenrir (moon)

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Fenrir (IPA: /ˈfɛnrɪr/ FEN-rirr) or Saturn XLI (provisional designation S/2004 S 16) is a natural satellite of Saturn. Its discovery was announced by Scott S. Sheppard, David C. Jewitt, Jan Kleyna, and Brian G. Marsden on May 4, 2005, from observations taken between December 13, 2004, and March 5, 2005.

Fenrir is about 4 kilometres in diameter, and orbits Saturn at an average distance of 22,611 Mm in 1269.362 days, at an inclination of 163° to the ecliptic (143° to Saturn's equator), in a retrograde direction and with an eccentricity of 0.131.

It was named in April 2007 after Fenrisulfr, a giant wolf from Norse mythology, father of Hati and Skoll, son of Loki, destined to break its bonds for Ragnarök.

[edit] References

• Institute for Astronomy Saturn Satellite Data
• Jewitt's New Satellites of Saturn page
• IAUC 8523: New Satellites of Saturn May 4 2005 (discovery)
• MPEC 2005-J13: Twelve New Satellites of Saturn May 3, 2005 (discovery and ephemeris)
• IAUC 8826: Satellites of Jupiter and Saturn (subscription-only) 2007 April 5 (naming the moon)

v • d • e Moons of Saturn Generally listed in increasing distance from Saturn. Temporary names in italics. Ring shepherds moonlets · Pan · Daphnis · Atlas · Prometheus ·  ?S/2004 S 6 · ?S/2004 S 4 · ?S/2004 S 3 · Pandora Co-orbitals Epimetheus · Janus Inner large (and Trojan) Mimas · Methone · Anthe · Pallene · Enceladus · Tethys (Telesto • Calypso) · Dione (Helene • Polydeuces) Outer large Rhea (rings) · Titan · Hyperion · Iapetus Inuit group Kiviuq · Ijiraq · Paaliaq · Siarnaq · Tarqeq 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 Gallic group Albiorix · Bebhionn · Erriapus · Tarvos Rings of Saturn · Cassini-Huygens · Themis · Chiron