Geological Chronicle
Jeans is a lunar impact crater situated on the Moon's southeastern limb, with the majority of its structure lying on the far side. Because of its location at coordinates 55.6° S, 91.5° E, the 81.13-kilometer-wide crater is brought entirely into view from Earth only during favorable librations, though observable details remain limited because the feature is viewed edge-on.
The crater is located nearly midway between the larger walled plain Lyot on the near side and Chamberlin on the far side. Jeans has a heavily worn, rounded outer rim, with several impacts situated along its southern and southeastern edge and inner wall, including Jeans G across the eastern rim.
The interior floor of the crater was resurfaced by basaltic lava, leaving a dark, level surface marked only by a few tiny craterlets. The feature commemorates British mathematical physicist Sir James Hopwood Jeans.