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S/2004 S 17
Discovery [1]
Discovered by Scott S. Sheppard et al.
Discovery site Mauna Kea Obs.
Discovery date13 December 2004
Orbital characteristics [2]
Epoch 9 August 2022 ( JD 2459800.5)
Observation arc15.67 yr (5,725 days)
0.1326708  AU (19,847,000 km)
Eccentricity0.1647702
–2.86 yr (–1043.92 d)
226.13753 °
0° 20m 41.48s / day
Inclination168.11825° (to ecliptic)
34.46812°
186.71765°
Satellite of Saturn
Group Norse group
Physical characteristics
Mean diameter
4 km [3]
Albedo0.04 (assumed) [3]
25.2 [3]
16.0 [2]

S/2004 S 17 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 13 December 2004 and 5 March 2005.

S/2004 S 17 is about 4 kilometres in diameter, and orbits Saturn at an average distance of 19,847,000 kilometres in about 1,044 days, at an inclination of 168.1° to the ecliptic, in a retrograde direction and with an eccentricity of 0.165. [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-T129 : S/2004 S 17". 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.