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Tarqeq

Moon of Saturn

Field	Value
name	Tarqeq
image	Tarqeq-cassini.png
caption	Tarqeq imaged by the Cassini spacecraft in June 2016
mpc_name	Saturn LII
alt_names	S/2007 S 1
pronounced
adjective	Tarqiupian, Tarqeqian
named_after	Tarqiup Inua
discoverer	Scott S. Sheppard
David C. Jewitt
Jan Kleyna
Brian G. Marsden
discovered	13 April 2007
discovery_ref
epoch	2007 Apr. 10.0
orbit_ref
semimajor	17.9106 million km
eccentricity	0.1081
inclination	49.90°
period	894.86 d
satellite_of	Saturn
group	Inuit group (Siarnaq)
mean_diameter
rotation	h
albedo	0.06 (assumed)
spectral_type	B–R = 1.37 ± 0.06
magnitude	23.9
abs_magnitude	14.8
physical_ref

David C. Jewitt Jan Kleyna Brian G. Marsden

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. It is named after Tarqeq, the Inuit moon god, 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) orbit lies at an inclination of 49.90° (to the ecliptic; 49.77° to Saturn's equator), with an eccentricity of 0.1081 and a semi-major axis of 17.9106 million km. 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 and a roughly ellipsoidal shape. 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.

It has very similar inclination and semi-major axis as Siarnaq, suggesting that it is a fragment of the latter.

Notes

References

Graykowski, Ariel. (2018-04-05). "Colors and Shapes of the Irregular Planetary Satellites". The Astronomical Journal.
[http://cfa-www.harvard.edu/mpec/K07/K07G38.html MPEC 2007-G38: ''S/2007 S 1''] 13 April 2007 (discovery, prediscovery and ephemeris)
[http://www.cbat.eps.harvard.edu/iauc/08800/08836.html IAUC 8836: ''S/2007 S 1, S/2007 S 2, and S/2007 S 3''] 11 May 2007 (discovery)
[http://www.cbat.eps.harvard.edu/iauc/08800/08873.html IAUC 8873: ''Satellites of Saturn''] 20 September 2007 (naming)
(2019). "Cassini Observations of Saturn's Irregular Moons". [[Lunar and Planetary Institute]].
(2018). "Enceladus and the Icy Moons of Saturn". [[The University of Arizona Press]].

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moons-of-saturn inuit-group irregular-satellites discoveries-by-brett-j.-gladman astronomical-objects-discovered-in-2000 moons-with-a-prograde-orbit

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