Ymir (moon)
| Discovery | |
|---|---|
| Discovered by | Brett J. Gladman |
| Discovery site | Observatoire de la Cote d'Azur |
| Discovery date | 2000 |
| Designations | |
| S/2000 S1 | |
| Adjectives | Ymirian |
| Orbital characteristics | |
| 23,040,000 km | |
| Eccentricity | 0.3349 |
| 3.6 yr (1315.14 d) | |
| 244.521° | |
| Inclination | 173.125° |
| 194.086° | |
| 22.668° | |
| Satellite of | Saturn |
| Physical characteristics | |
| Dimensions | 18 km |
| Mass | 5.1×1015 kg |
| 8.7 m/s (31 km/h) | |
| Albedo | 0.06 |
| 21.7 | |
Ymir (/ˈɪmɪər/ IM-eer), or Saturn XIX is a moon of Saturn. It was found by Brett J. Gladman, et al. in 2000, and given the designation S/2000 S 1. It was named in August 2003, from Norse mythology, where Ymir is the ancestor of all the Jotuns or frost giants.
Ymir is about 16 kilometres in diameter, and orbits Saturn at an average distance of 23,175,000 km in 1317.137 days, at an inclination of 172° to the ecliptic (146° to Saturn's equator), with an eccentricity of 0.358.
References
- ↑ Brian G. Marsden (2000-10-25). "IAUC 7512". IAU. Retrieved 2011-01-08.
- ↑ Jacobson, R.A. (2007) SAT270, SAT271 (2007-06-28). "Planetary Satellite Mean Orbital Parameters". JPL/NASA. Retrieved 2008-02-14.
{{cite web}}: CS1 maint: multiple names: authors list (link) CS1 maint: numeric names: authors list (link) - 1 2 Scott S. Sheppard. "Saturn's Known Satellites". Department of Terrestrial Magnetism. Archived from the original on 2011-09-26. Retrieved 2008-02-14.
- 1 2 assume radius of 9 km; volume of a sphere * assume density of 1.7g/cm³ (though it could be a loose rubble pile) yields a mass of 5.1e15 kg and an escape velocity of 8.7 m/s (31 km/h)
- ↑ Nicholson, P. D. 2001
- ↑ Daniel W. E. Green (2003-08-08). "IAUC 8177: Sats OF (22); Sats OF JUPITER, SATURN, URANUS". IAU. Retrieved 2011-01-08.
- IAUC 7512: S/2000 S 1 and S/2000 S 2 2000 October 25 (discovery)
- MPEC 2000-Y15: S/2000 S 1, S/2000 S 2, S/2000 S 7, S/2000 S 8, S/2000 S 9 2000 December 19 (discovery and ephemeris)
- IAUC 8177: Satellites of Jupiter, Saturn, Uranus 2003 August 8 (naming the moon)
Other websites
Wikimedia Commons has media related to Ymir (moon).
- MPEC 2000-Y15: S/2000 S 1, S/2000 S 2, S/2000 S 7, S/2000 S 8, S/2000 S 9 (2000 Dec. 19 ephemeris)
- Ephemeris IAU-NSES
- Saturn's Known Satellites Archived 2011-09-26 at the Wayback Machine (by Scott S. Sheppard)
