Copernican model deals with the planets as a system

We would expect that the Copernican system succeeds better at explaining the asymmetry of season across the hemispheres. As the Copernican model deals with the planets as a system, it has no difficulty in explaining the asymmetry of the seasons and the varying lengths of the days. In this sense, the Copernican model has a grater explanatory power: by adopting the mobility of the earth, it naturally explains retrograde motions, the seasons, and the relative distance of the planets from the sun. But the Copernican system is more unwidely than the Ptolemaic model, at least in this respect. Nevertheless, it retains a closer fit to the solar system than the Ptolemaic model