Geological Chronicle
Franck is a small lunar impact crater that lies near the north end of Sinus Amoris, a bay on the northern part of Mare Tranquillitatis. The formation spans an official diameter of 11.91 kilometers.
The feature is situated in the Macrobius quadrangle (LAC-43). It is officially cataloged by the International Astronomical Union at selenographic coordinates 22.587° latitude and 35.5594° longitude.