ring A

ring A

[′riŋ ′ā]
(astronomy)
The bright outer ring of Saturn, having an outside diameter of 169,000 miles (272,000 kilometers) and an inner diameter of 150,000 miles (242,000 kilometers).
References in classic literature ?
When you marry me, I will give you this ring as a marriage gift, and it will make you the happiest of mortal men.