Walter Baade
930 Westphalia ("prov. designation": "or" ) is a very dark background asteroid and a slow rotator from the inner regions of the asteroid belt, that measures approximately in diameter. It was discovered on 10 March 1920, by German astronomer Walter Baade at the Bergedorf Observatory in Hamburg. The carbonaceous C-type asteroid (Ch) has an exceptionally long rotation period of 100.7 hours and is likely spherical in shape. It was named after Westphalia, a region in northwestern Germany.