There is a circle with a fatten ring around its middle encircling it. There is no space between the ring and the sphere. Nor is there any details on the main circle or the ring.
This is a Planet icon. We've made it in iOS style
, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 13,300 icons, all in the same style and quality.