S/2020 S 1

S/2020 S 1
Discovery[1]
Discovered byScott S. Sheppard, David C. Jewitt, Jan Kleyna, Brett J. Gladman, Edward Ashton, Mike Alexandersen, Jean-Marc Petit
Discovery date2020
Orbital characteristics[2]
11,338,700 km (7,045,500 mi)
Eccentricity0.337
1.235 yrs (451.10 d)
Inclination48.2° (to the ecliptic)
Satellite ofSaturn
GroupInuit group (Kiviuq)
Physical characteristics
3.75 km[3]
15.9[1]

S/2020 S 1 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 3, 2023 from observations taken between December 14, 2004 and July 8, 2021.[1]

S/2020 S 1 is about 3.75 kilometers in diameter, and orbits Saturn at a distance of 11.339 Gm in 451.10 days, at an inclination of 48.2°, orbits in prograde direction and eccentricity of 0.337.[2] S/2020 S 1 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/2020 S 1 librates in accordance with the von Zeipel–Lidov–Kozai effect.[4]

References

  1. ^ a b c d "MPEC 2023-J21 : S/2020 S 1". Minor Planet Electronic Circular. Minor Planet Center. Retrieved 3 May 2023.
  2. ^ a b c "Planetary Satellite Mean Elements". Jet Propulsion Laboratory. California Institute of Technology. Retrieved 3 May 2023.
  3. ^ a b c "S/2020 S 1". Tilmann's Web Site. Tilmann Denk. Retrieved 25 December 2023.
  4. ^ 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.
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