S/2004 S 13
| 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 | 15.60 yr (5,699 days) |
| 0.1235696 AU (18,486,000 km) | |
| Eccentricity | 0.2713528 |
| –2.57 yr (–938.36 d) | |
| 318.38441° | |
| 0° 23m 1.133s / day | |
| Inclination | 166.99515° (to ecliptic) |
| 235.01103° | |
| 18.66111° | |
| Satellite of | Saturn |
| Group | Norse group |
| Physical characteristics | |
| ≈6 km[3] | |
| Albedo | 0.04 (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
[edit]- ^ Discovery Circumstances from JPL
- ^ 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.
- ^ a b c S.S. Sheppard (2019), Moons of Saturn, Carnegie Science, on line
- ^ 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) - ^ 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.
- 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)
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