Geological Chronicle
Positioned on the lunar far side just beyond the northwestern limb, Poczobutt is a large impact crater spanning 212.36 kilometers in diameter. Dating to the Pre-Nectarian period of the lunar geologic timescale, the crater lies in an area occasionally brought into sight from Earth by libration. Heavy erosion has reduced its outer rim to an irregular ring of peaks broken in several locations by small craters, with only a small arc along the eastern side remaining relatively intact.
Overlying impacts have significantly altered the formation. The crater Omar Khayyam lies within the western interior of Poczobutt, while Zsigmondy overlies the northeastern rim and Smoluchowski sits across the rim to the north-northeast. Along the outer northeastern rim, the satellite crater Smoluchowski H exhibits a sharp rim, terraced inner walls, and a higher albedo compared to the surrounding terrain.
Much of the interior floor is irregular due to overlying impacts and scattered ejecta. In the eastern half, a level plain remains almost flat and featureless, marked only by low peripheral ridges and tiny craterlets, with a small flooded crater along its southern margin. In 1979, the International Astronomical Union formally named the crater after Polish astronomer Marcin Odlanicki-Poczobutt.