As of July 2013, we know of fourteen moons orbiting Neptune. The largest, Triton, was discovered only 17 days after Neptune itself was found in 1846 and it would be over a hundred years before any others were first seen. Triton is one of the larger moons in the Solar System with a diameter of 2700km, and orbits backwards around Neptune. The most recently discovered moon, by contrast, is less than 20km across, and is known as S/2004 S1, until the IAU votes on a proper name for it.
Written by Allen Versfeld
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