Naiad 

Naiad is the last satellite of Neptune to be discovered. Like most other moons of Neptune, it was discovered through analysis of Voyager 2 photographs taken in 1989. The satellite lies 23,200 kilometers (14,400 miles) above Neptune's surface and orbits the planet once every 7 hours, 6 minutes. It is irregularly shaped and has absence of any evidence of geological activity. Like many other moons of Neptune, Naiad orbits Neptune in the same direction that the planet rotates and lies close to the equatorial plane.

Physical Data Key Mass Mass Mass Mass compared to that of Earth. Radius Radius Radius Radius compared to that of Earth. Mean Density Average Density. Distance Distance to the planet's center. Magnitude The brightness of a star or object.

Orbital Data Key Rotational Period Number of days to make one complete rotation. Orbital Period Number of days to obital the planet. Mean Orbital Velocity Average obital speed. Orbital Eccentricity Eccentricity. Orbital Inclination The tilt of the moon or planet. Escape Escape Velocity. Albedo Visual geometric albedo.