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S/2004 S 12

Moon of Saturn

Summary

Moon of Saturn

Field	Value
name	S/2004 S 12
discovery_ref
discoverer	Scott S. Sheppard et al.
discovery_site	Mauna Kea Obs.
discovered	12 December 2004
orbit_ref
epoch	9 August 2022 (JD 2459800.5)
observation_arc	15.61 yr (5,703 days)
semimajor	0.1327201 AU
eccentricity	0.3711930
period	–2.86 yr (–1044.50 d)
mean_anomaly	326.59167°
mean_motion	/ day
inclination	163.85743° (to ecliptic)
asc_node	330.73760°
arg_peri	111.13920°
satellite_of	Saturn
group	Norse group
mean_diameter	≈
albedo	0.04 (assumed)
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 until its recovery was announced on 12 October 2022. (In 2021, it had also been found in Canada-France-Hawaii Telescope observations from 2019.)

References

|access-date = 2008-01-20 |archive-url = https://web.archive.org/web/20110810063231/http://ssd.jpl.nasa.gov/?sat_elem#saturn |archive-date = 2011-08-10 |url-status = live

Institute for Astronomy Saturn Satellite Data
Jewitt's New Satellites of Saturn page
MPEC 2005-J13: Twelve New Satellites of Saturn, 3 May 2005 (discovery and ephemeris)

References

(28 September 2012). "Irregular Satellites of the Outer Planets: Orbital Uncertainties and Astrometric Recoveries in 2009–2011". The Astronomical Journal.
(August 2021). "Evidence for a Recent Collision in Saturn's Irregular Moon Population". The Planetary Science Journal.
Discovery Circumstances [http://ssd.jpl.nasa.gov/?sat_discovery from JPL]
[https://sites.google.com/carnegiescience.edu/sheppard/moons/saturnmoons S.S. Sheppard (2019), Moons of Saturn, ''Carnegie Science'', on line]

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

norse-group moons-of-saturn irregular-satellites discoveries-by-scott-s.-sheppard astronomical-objects-discovered-in-2005 moons-with-a-retrograde-orbit recovered-astronomical-objects

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