Saturn LVIII

Summary

Saturn LVIII
Discovery[1]
Discovered bySheppard et al.
Discovery date2019
Designations
S/2004 S 26
S8353a[2]
Orbital characteristics[2]
26737800 km
Eccentricity0.148
−1624.2 days
(4.45 years)
Inclination171.3°
Satellite ofSaturn
GroupNorse group?
Physical characteristics
Mean diameter
4+50%
−30%
 km
25.0

Saturn LVIII, provisionally known as S/2004 S 26, is the outermost known 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 21, 2007.[3] It was given its permanent designation in August 2021.[4]

Saturn LVIII is about 4 kilometres in diameter, and orbits Saturn at an average distance of 26.676 Gm (0.178 AU) in 1627.18 days (the only satellite known to take over 4 years to orbit Saturn), at an inclination of 171° to the ecliptic, in a retrograde direction and with an eccentricity of 0.165.[3]

References

  1. ^ Discovery Circumstances from JPL
  2. ^ a b S.S. Sheppard (2019), Moons of Saturn, Carnegie Science, on line
  3. ^ a b "MPEC 2019-T133 : S/2004 S 26". minorplanetcenter.net. Retrieved 7 October 2019.
  4. ^ "M.P.C. 133821" (PDF). Minor Planet Center. International Astronomical Union. 10 August 2021. Retrieved 21 August 2021.