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S/2004 S 13

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S/2004 S 13
Discovery [1]
Discovered byScott S. Sheppard et al.
Discovery siteMauna Kea Obs.
Discovery date12 December 2004
Orbital characteristics [2]
Epoch 9 August 2022 (JD 2459800.5)
Observation arc15.60 yr (5,699 days)
0.1235696 AU (18,486,000 km)
Eccentricity0.2713528
–2.57 yr (–938.36 d)
318.38441°
0° 23m 1.133s / day
Inclination166.99515° (to ecliptic)
235.01103°
18.66111°
Satellite ofSaturn
GroupNorse group
Physical characteristics
≈6 km[3]
Albedo0.04 (assumed)[3]
24.5[3]
16.3[2]

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.[2][4]

This moon was considered lost[5] until its recovery was announced on 12 October 2022.[2]

References

  1. ^ Discovery Circumstances from JPL
  2. ^ a b c d "MPEC 2022-T130 : S/2004 S 13". Minor Planet Electronic Circular. Minor Planet Center. 12 October 2022. Retrieved 12 October 2022.
  3. ^ a b c S.S. Sheppard (2019), Moons of Saturn, Carnegie Science, on line
  4. ^ Jacobson, R.A. (2007) SAT272 (2007-06-28). "Planetary Satellite Mean Orbital Parameters". JPL/NASA. Archived from the original on 2011-08-10. Retrieved 2008-01-20.{{cite web}}: CS1 maint: numeric names: authors list (link)
  5. ^ Jacobson, B.; Brozović, M.; Gladman, B.; Alexandersen, M.; Nicholson, P. D.; Veillet, C. (28 September 2012). "Irregular Satellites of the Outer Planets: Orbital Uncertainties and Astrometric Recoveries in 2009–2011". The Astronomical Journal. 144 (5): 132. Bibcode:2012AJ....144..132J. doi:10.1088/0004-6256/144/5/132. S2CID 123117568.
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