Naiad, the last satellite discovered, is about 54 kilometers (33 miles) in diameter and orbits Neptune every 7 hours and 6 minutes about 23,200 kilometers (14,400 miles) above the clouds. It is irregularly shaped and shows no sign of any geological modification. Naiad circles the planet in the same direction as Neptune rotates, and remains close to Neptune's equatorial plane. This image has been smeared so that Naiad appears highly elongated.
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