This page covers 6 moons whose names start with the letter N, ranging from “Naiad” to “Nix.” These moons orbit planets and dwarf planets across the outer solar system, and they vary widely in size, shape, and orbital behavior. Some are tiny captured rocks just a few kilometers across, while others travel in sweeping orbits that take decades to complete.

Moons are natural satellites that orbit a planet, dwarf planet, or similar body in space. They form through various processes, including giant impacts, gravitational capture, and accretion from debris disks. Earth’s Moon is perhaps the most famous example, but our solar system holds hundreds of known moons, each with its own story.

Below you’ll find the table with Moon, Parent Planet, Diameter (km), Discovery Year, and Description.

Moon: The name of each moon starting with N. Names here follow the conventions set by the International Astronomical Union.

Parent Planet: The planet or dwarf planet that each moon orbits. This tells you where in the solar system the moon is located.

Diameter (km): The approximate width of the moon in kilometers. It helps you compare the sizes of these moons at a glance.

Discovery Year: The year astronomers first identified the moon. Earlier discoveries often relied on telescopes, while later ones came from spacecraft or advanced ground-based imaging.

Description: A short summary of each moon’s most notable features, orbit, or history. It gives you a quick sense of what makes each one unique.

Moons

MoonParent PlanetDiameter (km)Discovery Year
NaiadNeptune661989
NamakaHaumea1702005
NarviSaturn72003
NereidNeptune3401949
NesoNeptune602002
NixPluto422005

Descriptions

Naiad
The innermost known moon of Neptune, Naiad orbits so close to the planet that it completes a full revolution in just 7 hours. Discovered by Voyager 2, it has an irregular, lumpy shape.
Namaka
The smaller of Haumea’s two known moons, Namaka follows a notably eccentric orbit around the dwarf planet. Named after a Hawaiian water goddess, it was found using ground-based telescopes in 2005.
Narvi
A tiny irregular moon of Saturn that travels in a distant, retrograde orbit far from the planet. Named after a figure in Norse mythology, Narvi is thought to be a captured object.
Nereid
One of Neptune’s larger moons, Nereid holds one of the most eccentric orbits of any moon in the solar system, swinging between roughly 1.4 and 9.7 million km from Neptune. It was discovered by Gerard Kuiper.
Neso
Neptune’s outermost known moon, Neso follows an enormous, elongated retrograde orbit that takes about 26 years to complete — giving it one of the longest orbital periods of any moon in the solar system.
Nix
A small, elongated moon of Pluto discovered by the Hubble Space Telescope in 2005. NASA’s New Horizons probe revealed a reddish surface and a notably bright crater when it flew past in 2015.
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