Geological Chronicle
Ostwald is a worn lunar impact crater on the far side of the Moon, measuring 108.13 kilometers in diameter at coordinates 10.2351° N, 121.9478° E. It lies directly east of the crater Guyot and near the northern border of Ibn Firnas, with Recht positioned along its eastern rim.
Multiple small impacts have eroded the structure, leaving an irregular rim and inner wall. A brief crater chain forms a cleft in the western inner face. The floor is comparatively level but marked by a multitude of tiny craterlets, with low central ridges rising to the south and northeast of the midpoint.
The crater is named for Wilhelm Ostwald, a German chemist and Nobel laureate. Before the International Astronomical Union named it in 1970, the formation was known as Crater 212.