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Nereid is a large moon that orbits Neptune, the eighth planet from the Sun in our solar system. It's notable for having one of the most unusual and elongated orbits of any moon in the solar system, which makes it interesting to scientists studying planetary systems.
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Article
Nereid, or Neptune II, is the third-largest moon of Neptune. It has the second-most eccentric orbit of all known moons in the Solar System, after S/2023 S 38. It was the second moon of Neptune to be discovered, by Gerard Kuiper in 1949.
Discovery and naming