It applies to everything. If you fix earth in one universal place, the sun revolves around the earth. Nothing really makes sense, because there are phantom accelerations everywhere (because a more truthful model makes the sun stationary, since it is the much larger object, and experiences less acceleration than the earth does) but aside from those phantom accelerations, which are all real accelerations that the earth is experiencing, which we are applying to the rest of the universe to force earth to stay still, all the other math still checks out.