Tarqeq
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Tarqeq, also known as Saturn LII (provisional designation S/2007 S 1) is a natural satellite of Saturn. Its discovery was announced by Scott S. Sheppard, David C. Jewitt, Jan Kleyna, and Brian G. Marsden on 13 April 2007 from observations taken between 5 January 2006 and 22 March 2007.[1][2] It is named after Tarqeq, the Inuit moon god,[3] and is a member of the Inuit group of irregular satellites. It is about six kilometres in diameter. The Cassini spacecraft observed Tarqeq over 1.5 days on 15–16 January 2014.
The Tarqiupian (Tarqeqian)Template:Efn orbit lies at an inclination of 49.90° (to the ecliptic; 49.77° to Saturn's equator), with an eccentricity of 0.1081[1] and a semi-major axis of 17.9106 Gm. Tarqeq orbits in a prograde direction with a period of 894.86 days.
Tarqeq is the slowest-rotating irregular moon measured by Cassini–Huygens, with a period of about Script error: No such module "val". and a roughly ellipsoidal shape.[4] This is very close to a 1:5 resonance with Titan's orbital period, suggesting that gravitational interactions possibly lock Tarqeq in a mean-motion resonance.[5]
It has very similar inclination and semi-major axis as Siarnaq, suggesting that it is a fragment of the latter.[5]
Notes
References
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- ↑ a b MPEC 2007-G38: S/2007 S 1 13 April 2007 (discovery, prediscovery and ephemeris)
- ↑ IAUC 8836: S/2007 S 1, S/2007 S 2, and S/2007 S 3 11 May 2007 (discovery)
- ↑ IAUC 8873: Satellites of Saturn 20 September 2007 (naming)
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- ↑ a b Script error: No such module "citation/CS1".
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