Geological Chronicle
Chebyshev lies in the Moon’s southern hemisphere on the far side. The somewhat smaller Langmuir intrudes into its east-southeastern rim, with Brouwer on Langmuir’s eastern rim. A wide northern notch extends outward in a V-shape, about 30–40 kilometers.
The outer rim is eroded and somewhat irregular, though much of its perimeter remains discernible. Langmuir’s outer rampart spills into the southeastern floor, forming a rough patch. Chebyshev U on the western rim has a sharp edge with slight outward bulges; the southern rim is a disorganized jumble.
The interior mixes relatively level plains with irregular stretches. A short chain of small craters gouges from the western inner wall almost to the midpoint, and streaky clefts lie in the northeast. The southern satellite crater Chebyshev N is bowl-shaped and nearly symmetrical, apart from a slight southwest bulge. An infrared spectrum of pure crystalline plagioclase has been identified on the south floor and northeast rim.
The crater is named for Russian mathematician Pafnuty L. Chebyshev. The International Astronomical Union formally adopted the designation in 1970.