S/2019 S 21

Last updated
S/2019 S 21
Discovery 
Discovered by Scott S. Sheppard, David C. Jewitt, Jan Kleyna, Brett J. Gladman, E. Ashton
Discovery date2019
Orbital characteristics  
26,439,000  km (16,428,000 mi) [1]
Eccentricity 0.155
-4.480 yrs (1,636.32 d) [1]
Inclination 171.9° (to the ecliptic)
Satellite of Saturn
Group Norse group
Physical characteristics
4 km
16.2

    S/2019 S 21 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 16, 2023 from observations taken between February 2, 2006 and July 8, 2021. [2]

    S/2019 S 21 is about 4 kilometers in diameter, and orbits Saturn at an average distance of 26.076 Gm in 1,572.06 days, at an inclination of 171.5, orbits in a retrograde direction and has an eccentricity of 0.125. [2] S/2019 S 21 belongs to the Norse group and is one of the most distant moons from Saturn along with S/2004 S 26, S/2004 S 52 and S/2020 S 9. [3]

    References

    1. 1 2 "Planetary Satellite Mean Elements". Jet Propulsion Laboratory. California Institute of Technology. Retrieved 16 May 2023.
    2. 1 2 "MPEC 2023-K05 : S/2019 S 21". Minor Planet Electronic Circular. Minor Planet Center. Retrieved 16 May 2023.
    3. ↑ "S/2019 S 21". Tilmann's Web Site. Tilmann Denk. Retrieved 24 December 2023.
    This page is based on this Wikipedia article
    Text is available under the CC BY-SA 4.0 license; additional terms may apply.
    Images, videos and audio are available under their respective licenses.