Werner ( crater ) Crater characteristics Coordinates 28.0° S , 3.3° E Diameter 70 km Depth 4.2 km Colongitude    357° at sunrise Eponym Johannes Werner Werner is a prominent lunar impact crater that lies in the rugged south-central highlands of the Moon . It is almost joined with Aliacensis crater to the southeast , and the pair form a rugged valley in the intervening gap . Due west of Werner is the distorted Regiomontanus crater , and to the north is the remains of the Blanchinus crater . The rim of Werner crater shows little appearance of wear , and is much younger and less eroded that the other large craters in the surroundings . The interior wall is terraced , and there is a noticeable rampart on the exterior . There are several low rises on the crater floor and a notable central peak . Rev. T. W. Webb noted two very bright spots along the sides of this crater , more visible in larger aperature telescopes . The Clementine Lunar Atlas displays a patch of high albedo surface along the northern inner wall . Satellite craters By convention these features are identified on lunar maps by placing the letter on the side of the crater mid-point that is closest to Werner crater . Werner Latitude Longitude Diameter A 27.2° S 1.1° E 15 km B 26.2° S 0.7° E 13 km D 27.1° S 3.2° E 2 km E 27.4° S 0.8° E 7 km F 25.8° S 0.8° E 10 km G 27.6° S 1.3° E 9 km H 26.6° S 1.5° E 16 km References See the reference table for the general listing of literature and web sites that were used in the compilation of this page . Categories : Craters on the Moon 28.0 S 3.3 E 70 km 4.2 km 357 Johannes Werner 