Geological Chronicle
Emden is an impact crater in the northern hemisphere on the far side of the Moon. It lies northwest of the larger crater Rowland and east-northeast of Tikhov. The crater is named after Jacob Robert Emden (1862–1940).
Subsequent impacts have heavily damaged the structure, leaving its rim worn and irregular. The western half of the rim has suffered the most destruction, where overlapping craters cover almost the entire edge and inner wall, alongside a prominent crater along the southern wall.
Later impacts also left the interior floor partly covered. A merged crater pair on the western part of the interior floor is accompanied by a joined pair to the northeast. The floor remains most intact in the southeast, though even that area is pitted by multiple tiny craterlets.