10th January 2006

As of January 2006, there are 13 moons known to orbit Neptune. The moons with names are (in order from nearest to furthest from the planet)

Naiad
Thalassa
Despina
Galatea
Larissa
Proteus
Triton
Nereid
Psamathe.

There are also four other moons orbiting Neptune (3 in between Nereid and Psamathe and one beyond Psamathe) which were discovered in 2002 and 2003 but don’t yet have names. The largest moon is Triton (2706 km in diameter) The next largest is Proteus, only 416km in diameter. Most of the moons are irregularly shaped, not round like Triton.
UPDATE - SEPTEMBER 2007
The four Moons of Neptune discovered in 2002 and 2003 have now been named. The three between Nereid and Psamathe and named Halimede, Sao and Laomedeia. The most distant moon is Neso. For more information about Neptune's Moons, visit www.bobthealien.co.uk/neptunemoon.htm