Editing Binary system (section)

{{short description|Two astronomical bodies which orbit each other}}
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{{For|binary numbers|Binary number}}
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A '''binary system''' is a system of two [[astronomical bodies]] of the same kind that are comparable in size. Definitions vary, but typically require the [[barycenter|center of mass]] to be located outside of either object. (See [[Barycenter#Gallery|animated examples]].)

The most common kinds of binary system are [[binary star]]s and [[binary asteroid]]s, but [[brown dwarf]]s, [[planet]]s, [[neutron star]]s, [[black hole]]s and [[galaxies]] can also form binaries.

A ''multiple system'' is similar but consists of three or more objects, for example [[triple star]]s and [[triple asteroid]]s (a more common term than 'trinary').