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Laomedeia (pronounced /ˌleɪɒmɪˈdiːə/ or /ˌleɪɒmɪˈdaɪə/; Greek Λαομέδεια), also Neptune XII, is a prograde irregular satellite of Neptune. It was discovered by Matthew J. Holman, et al. on August 13, 2002.[1] Before the announcement of its name on February 3, 2007 (IAUC 8802), it was known as S/2002 N 3.
It orbits Neptune at a distance of about 23,571,000 km and is about 42 kilometers in diameter (assuming albedo of 0.04).[2] It is named after Laomedeia, one of the 50 Nereids.
- Eccentricity: 0.381
- Orbital inclination: 37.7° (to the ecliptic)[2]
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[edit] References
- ^ M. Holman, JJ Kavelaars, B. Gladman, T. Grav, W. Fraser, D. Milisavljevic, P. Nicholson, J. Burns, V. Carruba, J.-M. Petit, P. Rousselot, O. Mousis, B. Marsden, R. Jacobson; Discovery of five irregular moons of Neptune, Nature, 430 (2004), pp. 865-867. Final preprint(pdf)
- ^ a b S. Sheppard, D. Jewitt, J. Kleyna; A Survey for "Normal" Irregular Satellites Around Neptune: Limits to Completeness, The Astronomical Journal, 132 (2006), pp. 171–176. Preprint.
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