S/2005 S 4 is a natural satellite of Saturn. Its discovery was announced by Scott S. Sheppard, David C. Jewitt, Jan Kleyna, Edward Ashton, Brett J. Gladman, Jean-Marc Petit and Mike Alexandersen on May 10, 2023 from observations taken between December 12, 2004 and July 8, 2021.[2]
| Discovery | |
|---|---|
| Discovered by | Scott S. Sheppard, David C. Jewitt, Jan Kleyna, Brett J. Gladman |
| Discovery date | 2005 |
| Orbital characteristics[1] | |
| 11,324,500 km (7,036,700 mi) | |
| Eccentricity | 0.315 |
| 1.232 yrs (450.22 d) | |
| Inclination | 48.0° (to the ecliptic) |
| Satellite of | Saturn |
| Group | Inuit group (Kiviuq) |
| Physical characteristics | |
| 5 km | |
| 15.7 | |
S/2005 S 4 is about 5 kilometers in diameter, and orbits Saturn at a distance of 11.303 Gm in 448.63 days, at an inclination of 52.5, orbits in prograde direction and eccentricity of 0.177.[2] S/2005 S 4 belongs to the Inuit group and it may be a Kiviuq and/or Ijiraq fragment that broke off long ago, since it shares the same orbital elements.[3]
The orbit of S/2005 S 4 librates in accordance with the von Zeipel–Lidov–Kozai effect.[4]
References
edit- ^ a b "Planetary Satellite Mean Elements". Jet Propulsion Laboratory. California Institute of Technology. Retrieved 10 May 2023.
- ^ a b c "MPEC 2023-J79 : S/2005 S 4". Minor Planet Electronic Circular. Minor Planet Center. Retrieved 10 May 2023.
- ^ a b "S/2005 S 4". Tilmann's Web Site. Tilmann Denk. Retrieved 25 December 2023.
- ^ a b Grishin, Evgeni (September 2024). "Irregular Fixation II: The orbits of irregular satellites". Monthly Notices of the Royal Astronomical Society. 533 (1): 497–509. arXiv:2407.05123. Bibcode:2024MNRAS.533..497G. doi:10.1093/mnras/stae1752.