Main Page | See live article | Alphabetical index A binary system is an astronomy term referring to two objects in Space, usually stars, which are so close, their gravitational forces, attract one another into a mutual orbit. List of known binary systems Location Satellite A Satellite B Kuiper Belt Pluto Charon This article is a stub. You can help Wikipedia by fixing it. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.