S/2004 S 12 | |
Discoverer: | Scott S. Sheppard et al. |
Discovery Site: | Mauna Kea Obs. |
Discovered: | 12 December 2004 |
Epoch: | 9 August 2022 (JD 2459800.5) |
Observation Arc: | 15.61 yr (5,703 days) |
Eccentricity: | 0.3711930 |
Period: | –2.86 yr (–1044.50 d) |
Mean Anomaly: | 326.59167° |
Mean Motion: | / day |
Inclination: | 163.85743° |
Asc Node: | 330.73760° |
Arg Peri: | 111.13920° |
Satellite Of: | Saturn |
Group: | Norse group |
Mean Diameter: | ≈ |
Albedo: | 0.04 |
Magnitude: | 24.8 |
Abs Magnitude: | 15.9 |
S/2004 S 12 is a natural satellite of Saturn. Its discovery was announced by Scott S. Sheppard, David C. Jewitt, Jan Kleyna, and Brian G. Marsden on 4 May 2005 from observations taken between 12 December 2004 and 9 March 2005.
S/2004 S 12 is about 5 kilometres in diameter, and orbits Saturn at an average distance of 19,855,000 kilometres in about 1,044 days, at an inclination of 163.9° to the ecliptic, in a retrograde direction and with an eccentricity of 0.371.
This moon was considered lost[1] until its recovery was announced on 12 October 2022. (In 2021, it had also been found in Canada-France-Hawaii Telescope observations from 2019.)[2]