These galaxies are about 80 million light-years from Earth. Their diameters are approximately 90,000 and 60,000 light-years, respectively.

IC 2163 and NGC 2207 collided a few million years ago. They are currently exhibiting intense star formation activity, producing about 20 solar-mass stars per year; by comparison, the Milky Way forms only 2–3.

In the future, the galaxies may pass close to each other several more times before merging into a single system with reshaped spiral arms and a brighter center.