&sq=&lang=&file=File:Kari-cassini.png) Kari imaged by the Cassini spacecraft in May 2017 | |
| Discovery | |
|---|---|
| Discovered by | Scott S. Sheppard David C. Jewitt Jan T. Kleyna Brian G. Marsden |
| Discovery date | 2006 |
| Designations | |
Designation | Saturn XLV |
| Pronunciation | Icelandic: [ˈkʰauːrɪ] |
Named after | Kári |
| S/2006 S 2 | |
| Orbital characteristics[1] | |
| 22118000 km | |
| Eccentricity | 0.478 |
| −1233.6 days | |
| Inclination | 156.3° |
| Satellite of | Saturn |
| Group | Norse group |
| Physical characteristics[2][3] | |
| 6+50% −30% km | |
| 7.70±0.14 h | |
| Albedo | 0.06 (assumed) |
Spectral type | g – r = 0.31 ± 0.07, r – i = 0.53 ± 0.09[4] |
| 23.9 | |
| 14.8 | |
Kari or Saturn XLV is a natural satellite of Saturn. Its discovery was announced by Scott S. Sheppard, David C. Jewitt, Jan Kleyna, and Brian G. Marsden on 26 June 2006 from observations taken between January and April 2006.
Kari is about 6 kilometres in diameter, and orbits Saturn at an average distance of 22,305,100 km in 1243.71 days, at an inclination of 148.4° to the ecliptic (151.5° to Saturn's equator), in a retrograde direction and with an eccentricity of 0.3405. The rotation period has been determined to be 7.7±0.14 hours.[2] The light curve is similar to Hyrrokkin's, having two deep and one shallow minima, and the moon is probably triangular in shape.[3]
It was named in April 2007 after Kári, son of Fornjót, the personification of wind in Norse mythology.
- ^ S.S. Sheppard (2019), Moons of Saturn, Carnegie Science, on line
- ^ a b Denk, T.; Mottola, S. (2019). Cassini Observations of Saturn's Irregular Moons (PDF). 50th Lunar and Planetary Science Conference. Lunar and Planetary Institute.
- ^ a b Denk, Tilmann; Mottola, Stefano; Tosi, Frederico; Bottke, William F.; Hamilton, Douglas P. (2018). "The Irregular Satellites of Saturn" (PDF). In Schenk, P.M.; Clark, R.N.; Howett, C.J.A.; Verbiscer, A.J.; Waite, J.H. (eds.). Enceladus and the Icy Moons of Saturn. Space Science Series. Vol. 322. Tucson, AZ: The University of Arizona Press. pp. 409–434. Bibcode:2018eims.book..409D. doi:10.2458/azu_uapress_9780816537075-ch020. ISBN 9780816537075.
- ^ Peña, José; Fuentes, Cesar (2022-05-17). "Colors of Irregular Satellites of Saturn with the Dark Energy Camera". The Astronomical Journal. 163 (6): 274. arXiv:2204.08391. Bibcode:2022AJ....163..274P. doi:10.3847/1538-3881/ac6258. ISSN 1538-3881.