Kiviuq (moon)

Kiviuq
Kiviuq imaged by the Canada-France-Hawaii Telescope in September 2000
Discovery[1]
Discovered byJ. J. Kavelaars et al.
Discovery date18 November 2000
Designations
Designation
Saturn XXIV
Pronunciation/ˈkɪvi.ʌk/
Named after
Kiviuq
S/2000 S 5
AdjectivesKiviupian, Kiviuqian[a]
Orbital characteristics[2]
Epoch 2000 January 1.5
11.307 Gm
Eccentricity0.182
449.13 d
(1.23 yr)
Inclination48.9
Satellite ofSaturn
GroupInuit group (Kiviuq)
Physical characteristics
Dimensions38.42 × 17 × 7.64 km (modeled)[3]
17+50%
−30% km[4]
21.82±0.22 h[5]
21.97±0.16 h[4]
Albedo0.06 assumed[4]
Spectral type
B−V=0.87
R−V=0.66[6]/0.48[7]
D-type[7]
22.0[8]
12.6[8]

Kiviuq is a prograde irregular satellite of Saturn. It was discovered by J. J. Kavelaars et al. in 2000,[9] and given the temporary designation S/2000 S 5.[10][11] It was named after Kiviuq, a hero of Inuit mythology.[12]

Kiviuq is about 17 km in diameter, and orbits Saturn at an average distance of 11.3 million kilometers in 449 days. It is a member of the Inuit group of irregular satellites. It is light red, and the Kiviupian (Kiviuqan)[a] infrared spectrum is very similar to the Inuit-group satellites Siarnaq and Paaliaq, supporting the thesis of a possible common origin of the Inuit group in the break-up of a larger body.[7][13]

Kiviuq is believed to be in Kozai resonance, cyclically reducing its orbital inclination while increasing the eccentricity and vice versa.[14] Its current orbital elements overlap strongly with Phoebe's orbit, and the moons will likely eventually collide with each other.[8]

The light curve amplitude of Kiviuq is large, varying in brightness by over 2 magnitudes. The large amplitude of Kiviuq suggests that it has an elongated shape, and may be a possible contact binary.[4]

  1. ^ "Planetary Satellite Discovery Circumstances". ssd.jpl.nasa.gov.
  2. ^ "Planetary Satellite Mean Elements". ssd.jpl.nasa.gov.
  3. ^ Melnikov, A. V.; Kopylova, Yu. G. (2022-12-01). "Simulation of the Rotational Dynamics and Light Curves of Saturn's Small Moons in the Fast Rotation Mode". Solar System Research. 56 (6). Springer Link: 403–410. doi:10.1134/S0038094622050045. ISSN 1608-3423.
  4. ^ a b c d Denk, T.; Mottola, S. (2019). Cassini Observations of Saturn's Irregular Moons (PDF). 50th Lunar and Planetary Science Conference. Lunar and Planetary Institute.
  5. ^ Cite error: The named reference DenkMottola2011 was invoked but never defined (see the help page).
  6. ^ Grav, Tommy; Holman, Matthew J.; Gladman, Brett; Aksnes, Kaare (November 2003). "Photometric Survey of the Irregular Satellites". Icarus. 166 (1): 33–45. arXiv:astro-ph/0301016. doi:10.1016/j.icarus.2003.07.005 – via arXiv.
  7. ^ a b c Grav, T.; Bauer, J. (2007-03-08) [2006-11-18]. "A deeper look at the colors of the Saturnian irregular satellites". Icarus. 191 (1): 267–285. doi:10.1016/j.icarus.2007.04.020 – via arXiv.
  8. ^ a b c Denk, Tilmann; Mottola, Stefano; Tosi, Frederico; Bottke, William F.; Hamilton, Douglas P. (2018). "The Irregular Satellites of Saturn". Enceladus and the Icy Moons of Saturn (PDF). Vol. 322. University of Arizona Press. pp. 409–434. Bibcode:2018eims.book..409D. doi:10.2458/azu_uapress_9780816537075-ch020. ISBN 9780816537488.
  9. ^ Kavelaars, J. J.; Holman, M. J.; Grav, T.; Milisavljevic, D.; Fraser, W.; Gladman, B. J.; Petit, J. -M.; Rousselot, P.; Mousis, O.; Nicholson, P. D. (2004-06-01). "The discovery of faint irregular satellites of Uranus". Icarus. 169 (2): 474. doi:10.1016/j.icarus.2004.01.009. ISSN 0019-1035 – via ScienceDirect.
  10. ^ "IAUC 7521: S/2000 S 5, S/2000 S 6". www.cbat.eps.harvard.edu. November 18, 2000.
  11. ^ "MPEC 2000-Y14 : S/2000 S 3, S/2000 S 4, S/2000 S 5, S/2000 S 6, S/2000 S 10". minorplanetcenter.net. December 19, 2000.
  12. ^ "IAUC 8177: Sats OF (22); Sats OF JUPITER, SATURN, URANUS". www.cbat.eps.harvard.edu. August 8, 2003.
  13. ^ Gladman, Brett; Kavelaars, J. J.; Holman, Matthew; Nicholson, Philip D.; Burns, Joseph A.; Hergenrother, Carl W.; Petit, Jean-Marc; Marsden, Brian G.; Jacobson, Robert; Gray, William; Grav, Tommy (2001-07-12). "Discovery of 12 satellites of Saturn exhibiting orbital clustering". Nature. 412 (6843): 163–166. doi:10.1038/35084032. ISSN 1476-4687.
  14. ^ Cuk, Matija; Burns, Joseph A. (November 2004). "On the Secular Behavior of Irregular Satellites". The Astronomical Journal. 128 (5): 2518–2541. doi:10.1086/424937. ISSN 0004-6256 – via arXiv.


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