S/2020 S 5

Last updated
S/2020 S 5
Discovery 
Discovered by E. Ashton, Brett J. Gladman
Discovery date2020
Orbital characteristics [1]
18,391,300  km (11,427,800 mi)
Eccentricity 0.220
2.557 yrs (933.88 d)
Inclination 48.2° (to the ecliptic)
Satellite of Saturn
Group Inuit group (Siarnaq)
Physical characteristics
3 km
16.6

    S/2020 S 5 is a natural satellite of Saturn. Its discovery was announced by Edward Ashton, Brett J. Gladman, Jean-Marc Petit and Mike Alexandersen on May 6, 2023 from observations taken between July 3, 2019 and July 9, 2021. [2]

    S/2020 S 5 is about 3 kilometers in diameter, and orbits Saturn at a distance of 18.422 Gm in 933.52 days, at an inclination of 49.41°, orbits in a prograde direction and with an eccentricity of 0.135. [2] S/2020 S 5 belongs to the Inuit group and it may be a Siarnaq fragment that broke off long ago, since it shares the same orbital elements. [3]

    The orbit of S/2020 S 5 librates in accordance with the von Zeipel–Lidov–Kozai effect. [4]

    References

    1. ↑ "Planetary Satellite Mean Elements". Jet Propulsion Laboratory. California Institute of Technology. Retrieved 6 May 2023.
    2. 1 2 "MPEC 2023-J39 : S/2020 S 5". Minor Planet Electronic Circular. Minor Planet Center. Retrieved 6 May 2023.
    3. ↑ "S/2020 S 5". Tilmann's Web Site. Tilmann Denk. Retrieved 25 December 2023.
    4. ↑ 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 .
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