| Feature | Boundary (km) | Optical Depth | Notes | |
|---|---|---|---|---|
| Middle | Width | |||
| Galle | 42,000 | 2,000 | 10^-4 | A faint and poorly understood ring. |
| Le Verrier | 53,200 | < 100 | 10^-2 | A narrow, axisymmetric ring. |
| Lassell | 55,200 | 4,000 | 10^-4 | A uniform, faint ring extending outward from Le Verrier. |
| Arago | 57,200 | A brightness enhancement at the outer edge of Lassell. | ||
| Unnamed | 61,953 | A ring of dust in the orbit of Galatea. | ||
| Adams | 62,933 | 15 | 0.01 to 0.1 | A narrow ring containing the arcs. It shows a radial wiggles due to perturbations from nearby Galatea. |
| Name | Semimajor Axis (km) | Period (days) | Eccentricity | Inclination (deg) | Mean Radius (km) | Mass (10^20 kg) |
|---|---|---|---|---|---|---|
| Naiad | 48,227 | 0.294396 | 0.000 | 4.74 | 29 | |
| Thalassa | 50,075 | 0.311485 | 0.000 | 0.21 | 40 | |
| Despina | 52,526 | 0.334655 | 0.000 | 0.07 | 74 | |
| Galatea | 61,953 | 0.428745 | 0.000 | 0.05 | 79 | |
| Larissa | 73,548 | 0.554654 | 0.000 | 0.2 | 94 | |
| Proteus | 117,647 | 1.122315 | 0.000 | 0.55 | 209 | |
| Triton | 354,760 | 5.876854 | 0.0004 | 156.834 | 1353 | 215 |
| Nereid | 5,513,400 | 360.13619 | 0.7512 | 7.23 | 170 |
From Murray, C. D., and S. F. Dermott 1999. Solar System Dynamics, Cambridge University Press.