Ymir (moon)
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.[6]
| Discovery[1] | |
|---|---|
| Discovered by | Brett J. Gladman |
| Discovery site | Observatoire de la Cote d'Azur |
| Discovery date | 2000 |
| Designations | |
| S/2000 S1 | |
| Adjectives | Ymirian |
| Orbital characteristics[2] | |
| 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[3] |
| Mass | 5.1×1015 kg[4] |
| 8.7 m/s (31 km/h)[4] | |
| Albedo | 0.06[5] |
| 21.7[3] | |
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.
Ymir (moon) Media
Ymir imaged by the CFHT on 23 September 2000
3D model created based on lightcurve data
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) - ↑ 3.0 3.1 Scott S. Sheppard. "Saturn's Known Satellites". Department of Terrestrial Magnetism. Retrieved 2008-02-14.
- ↑ 4.0 4.1 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
- 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 (by Scott S. Sheppard)
