# Can two artificial bodies be built in space and be made to orbit each other?

Would it be possible to make artificial constructs (satellites) orbit each other? I looked at the gravitational laws, and nothing seems to suggest that this is not possible.

• Your question doesn't make sense, yes two bodies can orbit each other, I'll give you an example The Earth and The Sun. – iharob Jul 4 '15 at 0:54

Say, you want to these objects of equal masses and let them rotate on circular orbits (just to understand the scalse). You will thus have a force between them \begin{equation} F={Gm^2\over d^2}, \end{equation} where $d$ is a distance between them. Thus you'll get from $v^2/(d/2)=F$ \begin{equation} v^2=\frac{Gm^2}{2d}. \end{equation} So if you have, say, $m=50$ tons, $d=1$ km, they will orbit with \begin{alignat}{2} v=9.13 ~\text{cm/s (and with a period of}~P=96^{\rm h}=4^{\rm d}\text{)}. \end{alignat} Making them rotate elliptic orbits may change something, but not drastically.
So, theoretically, you can make this possible. The question is, how fast do you need them to rotate. For example, to make them rotate with at least $1$ m/s, you would require $5000$ tons.