Neptune's innermost four moons are
) is the innermost of Neptune's known satellites:
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.
|
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.
 |
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.
 |
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.
... Neptune
... Naiad / Thalassa / Despina / Galatea
... Larissa
... 
