Gridr (moon)
| Discovery[1] | |
|---|---|
| Discovered by | Sheppard et al. |
| Discovery date | 2019 |
| Designations | |
| S2423b[2] | |
| Orbital characteristics [2] | |
| 19211000 km | |
| Eccentricity | 0.204 |
| −990.23 days | |
| Inclination | 163.1° |
| Satellite of | Saturn |
| Group | Norse group |
| Physical characteristics | |
| 4+50% −30% km | |
| 25.0 | |
S/2004 S 20 is a natural satellite of Saturn. Its discovery was announced by Scott S. Sheppard, David C. Jewitt, and Jan Kleyna on October 7, 2019 from observations taken between December 12, 2004 and March 22, 2007.[3]
S/2004 S 20 is about 4 kilometres in diameter, and orbits Saturn at an average distance of 19,418 Gm in 1010.55 days, at an inclination of 163° to the ecliptic, in a retrograde direction and with an eccentricity of 0.197. [3]
References
- ^ Discovery Circumstances from JPL
- ^ a b S.S. Sheppard (2019), Moons of Saturn, Carnegie Science, on line
- ^ a b "MPEC 2019-T126 : S/2004 S 20". minorplanetcenter.net. Retrieved 7 October 2019.
| Geography | |
|---|---|
| Moons | |
| Astronomy | |
| Exploration | |
| Related | |
