* Constellations are not physical objects: Constellations are patterns of stars that appear close to each other from our perspective on Earth. These stars can be vastly different distances from us, and they don't necessarily orbit each other.
* Stars orbit within galaxies: Stars, including those in constellations, orbit the center of their galaxy. The size of a star's orbit depends on its distance from the galactic center, not its constellation.
* Galaxies also orbit: Galaxies themselves can orbit within clusters of galaxies.
To understand orbits, you need to think about individual stars and their motion within their galaxy.
