Online Astronomy eText: Satellites (Moons)
The Satellites (Moons) of Neptune: Naiad Link for sharing this page on Facebook

An image of Naiad (elongated due to motion of the spacecraft and moon during the exposure)
(Voyager 2, September 1989)

Data for Naiad

Discovered by Voyager 2 in September, 1989
Named after one of the Nereids, or attendants of Neptune
Orbital size 48225 km (about 29965 miles), about 23500 km (14600 miles) from Neptune's surface
Orbital eccentricity 0%
Orbital inclination 4.7 degrees
Orbital period 7h 6m = 0.294 days
Rotational period 7h 6m (synchronous)
Diameter about 50 x 60 x 95 km (mean diameter 65 km)
Density 1.3 g/cc? (merely an estimate)
Mass 1.9 x 1017 kg? (based on estimated density)
Albedo (reflectivity) 7%