S/2019 S 18
| Discovery | |
|---|---|
| Discovered by | Scott S. Sheppard, David C. Jewitt, Edward Ashton, Brett J. Gladman, Jean-Marc Petit, Mike Alexandersen |
| Discovery date | 2019 |
| Orbital characteristics | |
| 23,140,700 km (14,379,000 mi)[1] | |
| Eccentricity | 0.509 |
| -3.633 yrs (1,327.06 d)[1] | |
| Inclination | 154.6° (to the ecliptic) |
| Satellite of | Saturn |
| Physical characteristics | |
Mean diameter | 3 km |
| 16.6 | |
S/2019 S 18 is a natural satellite of Saturn. Its discovery was announced by Scott S. Sheppard, David C. Jewitt, Edward Ashton, Brett J. Gladman, Jean-Marc Petit and Mike Alexandersen on May 15, 2023 from observations taken between March 21, 2007 and July 8, 2021.[2]
S/2019 S 18 is about 3 kilometers in diameter, and orbits Saturn at a distance of 23.555 Gm in 1,349.74 days, at an inclination of 148.4°, orbits in a retrograde direction and with an eccentricity of 0.487.[2] S/2019 S 18 belongs to the Norse group and its inclination is similar to Bestla and Narvi.[3]
References
- ↑ 1.0 1.1 1.2 "Planetary Satellite Mean Elements". Jet Propulsion Laboratory. California Institute of Technology. Retrieved 15 May 2023.
- ↑ 2.0 2.1 2.2 "MPEC 2023-J173 : S/2019 S 18". Minor Planet Electronic Circular. Minor Planet Center. Retrieved 15 May 2023.
- ↑ 3.0 3.1 "S/2019 S 18". Tilmann's Web Site. Tilmann Denk. Retrieved 25 December 2023.
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