Geological Chronicle
Oresme is an impact crater spanning 82.05 kilometers across on the lunar far side. Located just west-northwest of the larger Von Kármán crater and southeast of Mare Ingenii, it is thought to have formed during the Nectarian epoch roughly four billion years ago. The crater Chrétien lies to its southwest.
The crater has a heavily damaged outer rim that forms an uneven, irregular ring around the interior. The satellite crater Oresme K cuts across the southeastern rim, while a smaller crater sits along the northern wall. In contrast to its battered rim, Oresme's floor remains relatively level and featureless, marked only by low relief and a few tiny craters.
The International Astronomical Union formally named the feature in 1970 in honor of the 14th-century French mathematician Nicole Oresme. Before its 1970 naming by the IAU, lunar maps cataloged the feature as Crater 430.