Geological Chronicle
Located in the far northern latitudes on the Moon's far side, Roberts is a degraded impact crater measuring 89.37 kilometers across. The formation lies east-southeast of the crater Karpinskiy and northwest of Sommerfeld, with Thiessen situated to the north. It dates to the Imbrian or Nectarian period on the lunar geologic timescale.
The crater is heavily worn and eroded, with a rounded outer rim incised and damaged by multiple smaller craters. Little of the original rim remains besides a rounded and irregular ridge in the surface. Small craters also mark the interior floor, including a notable crater positioned near the south-southeastern inner wall.