Discovery [1] | |
---|---|
Discovered by | Scott S. Sheppard et al. |
Discovery site | Mauna Kea Obs. |
Discovery date | 12 December 2004 |
Orbital characteristics [2] | |
Epoch 9 August 2022 ( JD 2459800.5) | |
Observation arc | 15.61 yr (5,703 days) |
0.1327201 AU (19,855,000 km) | |
Eccentricity | 0.3711930 |
–2.86 yr (–1044.50 d) | |
326.59167 ° | |
0° 20m 40.789s / day | |
Inclination | 163.85743° (to ecliptic) |
330.73760° | |
111.13920° | |
Satellite of | Saturn |
Group | Norse group |
Physical characteristics | |
Mean diameter | ≈5 km [3] |
Albedo | 0.04 (assumed) [3] |
24.8 [3] | |
15.9 [2] | |
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. [2] [4]
This moon was considered lost [5] until its recovery was announced on 12 October 2022. [2] (In 2021, it had also been found in Canada-France-Hawaii Telescope observations from 2019.) [6]
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