Lat: 21.8°N, Long: 105.2°W, Diam: 88 km, Depth: km, Rükl: (farside), Copernican
The wrong ray system!
The lunar farside on the revised moonmap of the National Geographic Society (THE EARTH'S MOON) shows a ray system around Robertson. Totally wrong! It should be around Ohm, the crater to the southwest of Robertson. - DannyCaes Oct 7, 2015 (I am the world's most awful nitpicker in selenography, but I know why!).
Howard Percy; American physicist, mathematician (1903-1961).