Page:The Solar System - Six Lectures - Lowell.djvu/97

Saturn and its System

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Fig. X. Saturn's Rings.

			Old Determination.	New Determination.
Outer radius outer ring A			84000	85700
Encke's division	.	.	80000	81010
Inner radius outer ring A			74000	75300
Cassini's division	.	.	73200	73620
Outer radius ring B	.	.	72400	71900
Inner radius ring B	.	.	56200	54700
Outer radius ring C	.	.	56200	54700
Inner radius ring C	.	.	46700	43900
Planet radius...	.	.	37500	37000

Gaps occasioned by Mimas.Let us note these gaps and edges and then calculate what perturbing effect the satellites would exert. The satellites which would have the great-