# Are there star systems orbited by stars? [closed]

I never really heard about such occurencies and now asked my self if this could be possible.

So could there be systems with a star (or black hole) that is so heavy that other less heavy stars are orbiting it?

I could imagine 2 things that would both be a no.

First, this isn't possible for so heavy objects they would just be affect each other and not one beeing a stable center.

Or the second option is this wouldn't be possible withing a galaxy since this would just form a galaxy.

So except the 2 named scenarios, could this happen within a galaxy or would this jsut form something diferent?

## closed as unclear what you're asking by Rob Jeffries, user36790, Kyle Kanos, John Rennie, Bill NApr 4 '16 at 18:46

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• http://en.wikipedia.org/wiki/Star_system – lemon Apr 2 '16 at 10:03
• so there are just the 2 cases possible which I named? A star system meaning stars orbiting each other or stars orbiting a center, beeing a galaxy? – Zaibis Apr 2 '16 at 10:04
• What does the first sentence of that wiki article say? Also, the distinction between 'A orbits B' versus 'A and B orbit each other' is ill-defined since they both orbit their common centre of mass. – lemon Apr 2 '16 at 10:08
• the first sentence says "orbiting each other" what sounds for me like the first case I emntioned in OP. Correct me if I udnerstand that wiki artcile wrong :) – Zaibis Apr 2 '16 at 10:09
• Castor for example is a sixtuplet system where stars orbiting stars orbit stars orbiting stars, see animation at youtube.com/watch?v=bV3MrXwOU0k&t=10s – Yukterez Apr 3 '16 at 2:36