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Neso

Neptune XIII

Proper NameNeso
DesignationNeptune XIII
Primary PlanetNeptune
Orbital Period26 y ears, 244 days
Distance from NeptuneSemi-Major Axis: 50,018,300 km (0.33 AU)
Periapsis: 29,810,900 km (0.20 AU)
Apoapsis: 70,225,700 km (0.47 AU)
Eccentricity0.4040
Rotation PeriodNot known
Mean Diameter60 km
37 miles
NotesA small irregular moon of Neptune, notable for its immense distance from its primary planet. At its apoapsis - the farthest point in its orbit from Neptune - it approaches a distance greater than that of Mercury from the Sun. This makes Neso the most distant known moon of any planet in the Solar System.

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