Kiviuq (moon)
From Wikipedia, the free encyclopedia
| Discovery [1] | |
|---|---|
| Discovered by | B. J. Gladman et al. |
| Discovered | in 2000 |
| Mean Orbital elements [2] | |
| Epoch 2000 Feb. 26.00 | |
| Semi-major axis | 11.111 Gm |
| Eccentricity | 0.3288 |
| Inclination | 45.71° * |
| Orbital period | 449.22 d (1.23 yr) |
| Physical characteristics | |
| Mean diameter | 16 km[3] ** |
| Rotation period | ? |
| Albedo | 0.04 [3] assumed |
| Color | light red B-V=0.87 R-V=0.66[4]/0.48[5] |
| Spectral type | D [5] |
| *to the ecliptic **based on the albedo | |
Kiviuq (pronounced /ˈkiːvioʊk/ KEE-vee-oek, or /ˈkɪviʊk/ KIV-ee-ook) is a prograde irregular satellite of Saturn. It was discovered by Brett J. Gladman in 2000, and given the temporary designation S/2000 S 5.[6][7]
It was named in 2003 after a "giant" of Inuit mythology.[8] Kiviuq (also spelled Keeveeok, Qiviuq or Kivioq) is a legendary and heroic Inuk, a sort of Inuit Odysseus. He has lived very long (or has had several lives), has wandered and journeyed, living all sorts of adventures whose details depend on the story-teller's local tradition.
Kiviuq is about 16 kilometres in diameter, and orbits Saturn at an average distance of 11.1 million kilometers in 450 days. It is a member of the Inuit group of irregular satellites.
Kiviuq displays light-red colours and the infrared spectrum very similar to Siarnaq and Paaliaq, further supporting the thesis of a possible common origin of the Inuit group in the break-up of a larger body[9][5].
Kiviuq is believed to be in Kozai resonance i.e. cyclically reducing the orbital inclination while increasing the eccentricity and vice versa.[10]
[edit] References
- ^ Discovery Circumstances (JPL)
- ^ Mean orbital parameters from JPL
- ^ a b Scott Sheppard pages
- ^ Grav, T.; Holman, M. J.; Gladman, B. J.; Aksnes, K.; Photometric survey of the irregular satellites, Icarus, 166 (2003), pp. 33-45
- ^ a b c Grav, T.; and Bauer, J.; A deeper look at the colors of Saturnian irregular satellites
- ^ IAUC 7521: S/2000 S 5, S/2000 S 6 2000 November 18 (discovery)
- ^ MPEC 2000-Y14: S/2000 S 3, S/2000 S 4, S/2000 S 5, S/2000 S 6, S/2000 S 10 2000 December 19 (discovery and ephemeris)
- ^ IAUC 8177: Satellites of Jupiter, Saturn, Uranus 2003 August 8 (naming the moon)
- ^ Gladman, B. J.; Nicholson, P. D.; Burns, J. A.; Kavelaars, J. J.; Marsden, B. G.; Holman, M. J.; Grav, T.; Hergenrother, C. W.; Petit, J.-M.; Jacobson, R. A.; and Gray, W. J.; Discovery of 12 satellites of Saturn exhibiting orbital clustering, Nature, 412 (2001 July 12), pp. 163–166
- ^ Ćuk, M.; and Burns, J. A.; On the Secular Behavior of Irregular Satellites, The Astronomical Journal, Vol. 128 (2004), pp. 2518-2541
- Ephemeris from IAU-MPC NSES
[edit] External links
|
|||||||||||||||||||||||||||||
