  In this paper we study the interaction of a small rigid body in a viscous
compressible fluid. The system occupies a bounded three dimensional domain. The
object it allowed to freely move and its dynamics follows the Newton's laws. We
show that as the size of the object converges to zero the system fluid plus
rigid body converges to the compressible Navier-Stokes system under some mild
lower bound on the mass and the inertia momentum. It is a first result of
homogenization in the case of fluid-structure interaction in the compressible
situation. As a corollary we slightly improved the result on the influence of a
vanishing obstacle in a compressible fluid for $ \gamma \geq 6$ .
