Virchow (crater)
 Virchow is a small lunar impact crater that is located on the northwestern interior floor of the prominent crater Neper. The latter formation lies near the eastern limb of the Moon along the southern edge of the Mare Marginis. Observation of this area is hindered due to foreshortening as well as libration effects. Before being given a name by the IAU this crater had the designation Neper G.Virchow has a distorted shape with a somewhat polygonal rim particularly in the northern half.