Uranian Ring Data

                         Radius          Optical    Albedo    Width   Eccentricity
                     (km)      (Ru)       Depth      (e-3)    (km)
Uranian Equator     25,559     1.000
6                   41,837     1.637       ~0.3       ~15      ~1.5     0.0010
5                   42,235     1.637       ~0.5       ~15        ~2     0.0019
4                   42,571     1.666       ~0.3       ~15      ~2.5     0.0010
Alpha               44,718     1.750       ~0.4       ~15      4-10     0.0008
Beta                45,661     1.786       ~0.3       ~15      5-11     0.0004
Eta                 47,176     1.834       ~0.4-      ~15       1.6
Gamma               47,626     1.863       ~1.5+      ~15       1-4     0.0001
Delta               48,303     1.900       ~0.5       ~15       3-7
Lambda              50,024     1.957       ~0.1       ~15        ~2
Epsilon             51,149     2.006     0.5-2.3      ~18     20-96     0.0079