Ymir (moon)
From Infogalactic: the planetary knowledge core
| Discovery[1] | |
|---|---|
| Discovered by | Brett J. Gladman |
| Discovery site | Observatoire de la Cote d'Azur |
| Discovery date | 2000 |
| Designations | |
| S/2000 S1, Saturn XIX | |
| 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] | |
| 11 h 55 m 20 s[5] | |
| Albedo | 0.06[6] |
| 21.7[3] | |
Ymir (/ˈɪmɪər/ IM-eer), or Saturn XIX, is a retrograde irregular moon of Saturn. It was discovered by Brett J. Gladman, et al. in 2000, and given the temporary 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.[7]
Of the moons that take more than 3 Earth years to orbit Saturn, Ymir is the largest, at about 18 kilometres (11 miles) in diameter.[3] It takes 3.6 Earth years to complete an orbit around Saturn. During this time, hypothetical Ymir visitors would experience ~2650 sunsets.
References
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 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)
- ↑ Denk, T., Mottola, S. (2013): Irregular Saturnian Moon Lightcurves from Cassini-ISS Observations: Update. Abstract 406.08, DPS conference 2013, Denver (Colorado)
- ↑ Nicholson, P. D. 2001
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
External links
 |
Wikimedia Commons has media related to Ymir (moon). |
