Kiviuq (moon)
| Discovery | |
|---|---|
| Discovered by | B. J. Gladman et al. |
| Designations | |
| S/2000 S 5, Saturn XXIV | |
| Adjectives | Kiviup |
| Orbital characteristics | |
| Epoch 2000 Feb. 26.00 | |
| 11.111 | |
| Eccentricity | 0.3288 |
| 449.22 d (1.23 yr) |
|
| Inclination | 45.71 |
| Physical characteristics | |
| Dimensions | 16 km[1] |
| 21 h 49 min[2] | |
| Albedo | 0.04[1] assumed |
|
Spectral type
|
B−V=0.87 R−V=0.66[3]/0.48[4] D-type[4] |
Kiviuq (/ˈkɪvi.ʌk/ KIV-ee-uk or /ˈkiːvi.oʊk/ KEE-vee-ohk) 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.[5][6] It was named after Kiviuq, a hero of Inuit mythology.[7]
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. It is light red, and the Kiviupian (Kiviuqan) 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.[4][8]
Kiviuq is believed to be in Kozai resonance, cyclically reducing its orbital inclination while increasing the eccentricity and vice versa.[9]
Exploration
On 30 August 2010, the ISS camera of the Cassini–Huygens spacecraft took light-curve data from a distance of 9.3 million km. With these data, the rotation period was measured to 21 hours and 49 minutes.[2]
References
- ↑ 1.0 1.1 Scott Sheppard pages
- ↑ 2.0 2.1 T. Denk, S. Mottola, et al. (2011): Rotation Periods of Irregular Satellites of Saturn. EPSC/DPS conference 2011, Nantes (France), abstract 1452.
- ↑ Grav, T.; Holman, M. J.; Gladman, B. J.; Aksnes, K.; Photometric survey of the irregular satellites, Icarus, 166 (2003), pp. 33–45
- ↑ 4.0 4.1 4.2 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 November 18, 2000 (discovery)
- ↑ MPEC 2000-Y14: S/2000 S 3, S/2000 S 4, S/2000 S 5, S/2000 S 6, S/2000 S 10 December 19, 2000 (discovery and ephemeris)
- ↑ IAUC 8177: Satellites of Jupiter, Saturn, Uranus August 8, 2003 (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 (July 12. 2001), 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
External links
