| Feature | Inner Boundary (km) | Outer Boundary (km) | Optical Depth | Thickness (km) | Notes |
|---|---|---|---|---|---|
| Halo | 89,400 | 123,000 | 3 x 10^-6 | ~ 10,000 | Densest in a central core < 1000 km thick. |
| Main Ring | 123,000 | 128,940 | 5 x 10^-6 | ≤ 100 | Metis and Adrastea orbit near its outer edge. |
| Amalthea Ring [1] | 128,940 | 181,350 | ~ 10^-7 | 2600 | Inner component of the Gossamer Ring, bounded by the orbit of Amalthea. |
| Thebe Ring [1] | 128,940 | 221,900 | ~ 10^-7 | 8800 | Outer component of the Gossamer Ring, bounded by the orbit of Thebe. |
| Thebe Extension [1] | 221,900 | 280,000 | ~ 10^-8 | 8800 | A very faint outward extension to the Thebe Ring. |
| Name | Semimajor Axis (km) | Period (days) | Eccentricity | Inclination (deg) | Mean Radius (km) | Mass (10^20 kg) |
|---|---|---|---|---|---|---|
| Metis | 127,979 | 0.294780 | < 0.004 | ~ 0 | 20 | |
| Adrastea | 128,980 | 0.29826 | ~ 0 | ~ 0 | 10 | |
| Amalthea | 181,300 | 0.498179 | 0.003 | 0.40 | 86 | |
| Thebe | 221,900 | 0.6745 | 0.015 | 0.8 | 50 | |
| Io | 421,600 | 1.769138 | 0.0041 | 0.040 | 1,821 | 893.3 |
| Europa | 670,900 | 3.551810 | 0.0101 | 0.470 | 1,565 | 479.7 |
| Ganymede | 1,070,000 | 7.154553 | 0.0015 | 0.195 | 2,634 | 1482 |
| Callisto | 1,883,000 | 16.689018 | 0.007 | 0.281 | 2,403 | 1076 |
Except where noted, from Murray, C. D., and S. F. Dermott 1999. Solar System Dynamics, Cambridge University Press.
[1] Burns, J. A., M. R. Showalter, D. P. Hamilton, P. D. Nicholson, I. de Pater, M. E. Ocker-Bell, and P. C. Thomas 1999. The formation of Jupiter’s faint rings. Science 284, 1146-1150.