Moon Mundilfari
Mundilfari, or Saturn XXV, is a natural satellite of Saturn.
It was discovered by Brett J. Gladman, et al. in 2000, and given the temporary designation S/2000 S 9. Mundilfari is about 7 kilometres in diameter, and orbits Saturn at an average distance of 18,5903 Mm in 952.95 days, at an inclination of 168.4° to the ecliptic, in a retrograde direction and with an eccentricity of 0.210.
 Discovery images of Mundilfari (circled) taken by the CFHT in September 2000 | |
| Discovery | |
|---|---|
| Discovered by | Gladman et al. |
| Discovery date | 2000 |
| Designations | |
Designation | Saturn XXV |
| Pronunciation | Icelandic: [ˈmʏntɪlvarɪ] |
Named after | Mundilfari |
| S/2000 S 9 | |
| Orbital characteristics | |
| 18590300 km | |
| Eccentricity | 0.210 |
| −952.95 days | |
| Inclination | 168.4° |
| Satellite of | Saturn |
| Group | Norse group |
| Physical characteristics | |
| Dimensions | 11.78 × 7 × 5.86 km (modeled) |
Mean diameter | 7+50% −30% km |
| 6.74±0.08 hours | |
| Albedo | 0.06 (assumed) |
Spectral type | P |
| 23.8 | |
| 14.5 | |
Mundilfari may have formed from debris knocked off Phoebe by large impacts at some point in the Solar System's history. With a spectral slope of −5.0%/100 , Mundilfari is the bluest of all the moons studied by Grav and Bauer (2007), slightly more so than Phoebe (−2.5%/100 nm) and about as blue as Erriapus (+5.1%/100 nm) is red. Its rotation period is 6.74±0.08 hours, the second-fastest among all the irregular moons studied by Cassini–Huygens after Hati, and it appears to be very elongated in shape.
It was named in August 2003 from Norse mythology, where Mundilfari is the father of the goddess Sól (Sun) and the god Máni (Moon).
Notes
References
External links
- IAUC 7538: S/2000 S 7, S/2000 S 8, S/2000 S 9 December 7, 2000 (discovery)
- MPEC 2000-Y15: S/2000 S 1, S/2000 S 2, S/2000 S 7, S/2000 S 8, S/2000 S 9 December 19, 2000 (discovery and ephemeris)
- IAUC 8177: Satellites of Jupiter, Saturn, Uranus August 8, 2003 (naming the moon)
This article uses material from the Wikipedia English article Mundilfari (moon), which is released under the Creative Commons Attribution-ShareAlike 3.0 license ("CC BY-SA 3.0"); additional terms may apply (view authors). Content is available under CC BY-SA 4.0 unless otherwise noted. Images, videos and audio are available under their respective licenses.
®Wikipedia is a registered trademark of the Wiki Foundation, Inc. Wiki English (DUHOCTRUNGQUOC.VN) is an independent company and has no affiliation with Wiki Foundation.