MoonMoon of Neptune

Proteus

A moon of Neptune.

420km
Diameter
117,647km
From Neptune
1.1days
Orbital Period
1989
Discovered

About

Proteus is a moon of Neptune discovered in 1989.

Properties

420km
Diameter
117,647km
Semi-major Axis
1.12days
Orbital Period
Yes
Tidally Locked
1989
Discovery Year
Voyager 2
Discovered By

Other Moons of Neptune

View all
Triton

Triton

Neptune's largest moon, a captured Kuiper Belt object with nitrogen geysers.

2,706.8 km

Diameter

5.9 d

Orbit

1846

Discovered