What is Neso (moon)?
'''Neso''' also known as '''Neptune XIII''', is the farthest non-[[Sphere|spherical]] moon of [[Neptune (planet)|Neptune]]. It was found by [[Matthew J. Holman]], [[Brett J. Gladman]], ''et al.'' on [[August 14]], [[2002]], though it went unnoticed until [[2003]]. [[Image:TheIrregulars_NEPTUNE_GROUPS.svg|thumb|left|300px|Non-spherical moons of Neptune.]] Neso orbits Neptune at a distance of more than 48 million [[kilometre|km]], making it the farthest known moon of any planet. It follows a very [[inclination|inclined]] and very [[Orbital eccentricity|eccentric]] orbit illustrated on the diagram in relation to other irregular satellites of Neptune. Neso is about 60 km in [[diameter]], and assuming the mean [[density]] of 1.5 g/cm<sup>3</sup>. Its mass is estimated at 1.6{{e|17}} [[kg]]. Given the similarity of the orbit's parameters with [[Psamathe (moon)|Psamathe]] (S/2003 N 1), it was suggested that both non-spherical moons could have been a bigger moon that broke up. Neso is named after one of the Nereids. Before the announcement of its name on [[February 3]], [[2007]] (IAUC 8802<!--- Subscription required; see http://luppas.homeip.net/astrotaller/novedades.htm --->), Neso was known by its designation '''S/2002 N 4'''. ==Other websites== *[http://cfa-www.harvard.edu/~mholman/neptunians-press-release.html Matthew Holman's Neptune's page] *[http://www.ifa.hawaii.edu/~jewitt/irregulars.html David Jewitt's pages] *[http://www.ifa.hawaii.edu/~sheppard/satellites/nepsatdata.html Scott Sheppard's pages] *[http://www.aphelion-webzine.com/shorts/2007/11/AudienceofOne.html Neso in Fiction] <br />{{Neptune Footer}} [[Category:Neptune's moons]]