S/2004 S 13 Explained

S/2004 S 13
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:15.60 yr (5,699 days)
Eccentricity:0.2713528
Period:–2.57 yr (–938.36 d)
Mean Anomaly:318.38441°
Mean Motion: / day
Inclination:166.99515°
Asc Node:235.01103°
Arg Peri:18.66111°
Satellite Of:Saturn
Group:Norse group
Mean Diameter:
Albedo:0.04
Magnitude:24.5
Abs Magnitude:16.3

S/2004 S 13 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 13 is about 6 kilometres in diameter, and orbits Saturn at an average distance of 18,486,000 kilometres in about 938 days, at an inclination of 167.0° to the ecliptic, in a retrograde direction and with an eccentricity of 0.271.

This moon was considered lost[1] until its recovery was announced on 12 October 2022.

References

Notes and References

  1. Jacobson . B. . Brozović . M. . B. . Gladman . M. . Alexandersen . P. D. . Nicholson . C. . Veillet . 28 September 2012 . Irregular Satellites of the Outer Planets: Orbital Uncertainties and Astrometric Recoveries in 2009–2011 . The Astronomical Journal . 144 . 5 . 132 . 10.1088/0004-6256/144/5/132 . 2012AJ....144..132J . 123117568 . free .