Neptune's innermost four moons are
orbit: 48,200 km from Neptune diameter: 58 km mass: ?The Naiads were the nymphs who lived in and presided over brooks, springs, and fountains.
The last of the satellites discovered in 1989 by Voyager 2.
Naiad, Thalassa, Despina and Galatea are all irregularly shaped.
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orbit: 50,000 km from Neptune diameter: 80 km mass: ?Thalassa was a daughter of Aether and Hemera. "Thalassa" is also the Greek word for "sea".
Discovered in 1989 by Voyager 2.
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orbit: 52,600 km from Neptune diameter: 148 km mass: ?Despina was a nymph, the daughter of Poseidon (Neptune) and Demeter.
Discovered in 1989 by Voyager 2.
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orbit: 62,000 km from Neptune diameter: 158 km mass: ?Galatea was a Sicilian Nereid loved by the Cyclops Polyphemus. (Not related to the maiden who was originally a statue carved by Pygmalion and who was brought to life by Aphrodite.)
Discovered in 1989 by Voyager 2.
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