Neptune's Moons


Naiad (Neptune III)
Naiad ( "NAY ed" ) is the innermost of Neptune's known satellites.

Orbit:48,200 km from Neptune
Diameter:58 km
Mass:?
Discovered in:1989 by Voyager 2 (The last of the satellites). Naiad, Thalassa, Despina and Galatea are all irregularly shaped.
Thalassa (Neptune IV)
Thalassa ("tuh LASS eh") is the second of Neptune's known satellites.

Orbit:50,000 km from Neptune
Diameter:80 km
Mass:?
Discovered in:1989 by Voyager 2.

Despina (Neptune V)
Despina is the third of Neptune's known satellites.

Orbit:52,600 km from Neptune
Diameter:148 km
Mass:?
Discovered in:1989 by Voyager 2.

Galatea (Neptune VI)
Galatea ("gal eh TEE eh") is the fourth of Neptune's known satellites.

Orbit:62,000 km from Neptune
Diameter:158 km
Mass:?
Discovered in:1989 by Voyager 2.

  • Difficulties:-
    We know next to nothing about these moons. Even the basic orbital and size data are not very accurate

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    Last Modified : 5 Sep. 2001
    Created By#C0115361 Team