Saturnian Rings Fact Sheet

[Image of Saturn's rings]

Rings of Saturn

                         Radius   Radius/        Optical       Albedo     Thickness    Surf. Density   Eccentricity     
                          (km)     Eq. radius     Depth                      (m)         (g/cm2)
   Saturn Equator        60,268      1.000                                                                  
   D inner edge          66,900      1.110                                                
   D outer edge          74,510      1.236                                          
   C inner edge          74,658      1.239     0.05 - 0.10   0.12 - 0.30      5           1.4 - 5                                                  
   Titan ringlet         77,871      1.292                                                   17          0.00026                                                        
   Maxwell gap/ringlet   87,491      1.452                                                   17          0.00034                                 
   C outer edge          92,000      1.527         0.12          0.2          5             2 - 7
   B inner edge          92,000      1.527      0.4 - 2.5     0.4 - 0.6     5 - 10         20 - 100                                                                
   B outer edge         117,580      1.951         1.8                                                
   Cassini division                            0.05 - 0.15    0.2 - 0.4      20            18 - 20                                                                
   A inner edge         122,170      2.027      0.4 - 1.0     0.4 - 0.6    10 - 30         30 - 40                                                        
   Encke gap            133,589      2.216                                                          
   Keeler gap           136,530      2.265   
   A outer edge         136,775      2.269         0.6        0.4 - 0.6    10 - 30         20 - 30                                                       
   F ring center        140,180      2.326         0.1           0.6                                     0.0026
   G inner edge         170,000      2.82       1.0 x 10-6                    105
   G outer edge         175,000      2.90       
   E inner edge         181,000      3          1.5 x 10-5                    107
   E outer edge         483,000      8                                        107

   Rings, ringlets and gaps radially thinner than 1000 km are listed by center radius.
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Author/Curator:
Dr. David R. Williams, dave.williams@nasa.gov
NSSDC, Mail Code 690.1
NASA Goddard Space Flight Center
Greenbelt, MD 20771
+1-301-286-1258

NASA Official: Ed Grayzeck, edwin.j.grayzeck@nasa.gov
V1.0, 17 July 1995
Last Updated: 18 September 2006, DRW