Later imaged by the Voyager in 1986. Nine narrow rings have been mapped to date. Most are less than 10 km in width. Widest is the epsilon ring, perhaps 100 km in width at the widest. Particles may be similar in size and composition to the rings of Saturn.
Rings seem fairly symmetrical around the planet, but there is some clumpiness.
Rings are fainter than those of Uranus, and though they are broader, they seem to contain much less material. The material may be in the form of a much finer dust. Rings are clumpier than those of Uranus, with some parts of the ring having much higher density of material than others. . Three rings seen, with main ring, the most substantial, around 125,000 km from the planet. Main ring is about 6400 km wide and less than 30 km thick.