Saturn LVII

Summary

Saturn LVII
Discovery[1]
Discovered bySheppard et al.
Discovery date2019
Designations
S/2004 S 25
S8631e[2]
Orbital characteristics[2]
20544500 km
Eccentricity0.457
−1095.0 days
Inclination173.3°
Satellite ofSaturn
GroupNorse group?
Physical characteristics
Mean diameter
4+50%
−30%
 km
25.2

Saturn LVII, provisionally known as S/2004 S 25, is a 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 22, 2007.[3] It was given its permanent designation in August 2021.[4]

Saturn LVII is about 4 kilometres in diameter, and orbits Saturn at an average distance of 21.174 Gm in 1150.69 days, at an inclination of 173° to the ecliptic, in a retrograde direction and with an eccentricity of 0.442.[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-T132 : S/2004 S 25". 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.