Geological Chronicle
Spencer Jones is a lunar impact crater spanning 88.19 kilometers in diameter on the Moon's far side, positioned at the southwest margin of the Freundlich-Sharonov Basin. Just over 20 km away lies the slightly smaller crater Papaleksi to the south-southwest, while Anderson lies to the northeast.
The crater is roughly circular with a rim edge that is only moderately eroded, and its northwest inner wall is wider than elsewhere. Its interior floor is relatively level with a low ridge offset to the south of the midpoint, accompanied by the small satellite crater Spencer Jones Q attached to the southwestern outer rim. The infrared spectrum of pure crystalline plagioclase has been identified on the crater floor and central peak.
The feature commemorates British astronomer Sir Harold Spencer Jones (1890–1960).