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| physical object > natural object > celestial body > ring gap |
| ring gap comparison table | ||||
| Subject | has discoverer | has discovery date | has definition | has width |
|---|---|---|---|---|
| Cassini's division | Cassini | 1675 | A gap between the outermost rings of Saturn. The period of a particle in Cassini's division is about two-thirds that of Janus, one-half that of Mimas, one-third that of Enceladus, and one-quarter that of Tethys. | 1800 km |
| Encke's division | A region of decreased brightness in the outermost ring of Saturn. | |||
| Lyot division | A gap between the B ring and the C ring. |
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