Siarnaq (moon)

Siarnaq or Saturn XXIX, is a non-spherical moon of Saturn. It was found by Brett J. Gladman, et al. in 2000 and given the designation S/2000 S 3.

It was named in August 2003 after the giant Siarnaq (also known as Sedna) in Inuit mythology, it is the biggest member of the Inuit group of non-spherical moons.

Irregular prograde groups of satellites of Saturn: Inuit (blue) and Gallic (red)

Siarnaq is thought to be about 40 kilometres in diameter and orbits Saturn at an average distance of 17,500,000 km in 895 days.

The diagram illustrates its orbit in relation to other prograde non-spherical moons of Saturn. The eccentricity of the orbits is represented by the yellow segments extending from the pericentre to the apocentre.

Siarnaq has light-red colours very similar to Paaliaq and Kiviuq, supporting that the moons formed during a break up of a bigger body.

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v t e Moons of Saturn
Listed in approximately increasing distance from Saturn. Temporary names in italics.
Ring shepherds	S/2009 S 1 Ring moonlets Pan Daphnis Atlas Prometheus Pandora
Co-orbitals	Epimetheus Janus
G Ring	Aegaeon
Mimas and Alkyonides	Mimas Methone Anthe Pallene
Inner large (with trojans)	Enceladus Tethys Telesto Calypso Dione Helene Polydeuces
Outer large	Rhea 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 Jarnsaxa Mundilfari S/2006 S 1(?) S/2004 S 17(?) Bergelmir Narvi Suttungr Hati S/2004 S 12(?) Farbauti Thrymr Aegir S/2007 S 3(?) Bestla S/2004 S 7(?) S/2006 S 3 Fenrir Surtur Kari Ymir Loge Fornjot
Gallic group	Albiorix Bebhionn Erriapus Tarvos
Rings of Saturn Cassini–Huygens Themis Chiron S/2004 S 6 S/2004 S 4 S/2004 S 3 In fiction