Named in honor of Thomas A. Cragg, a quintessential amateur astronomer. In 1945 at age 17 he joined the American Association of Variable Star Observers; by 1992 he had contributed 120,702 brightness estimates, many being of variables at their faintest, as well as sunspot counts made every clear day with a 0.15-m Newtonian reflector. After the Association of Lunar and Planetary Observers was formed in 1947, Cragg served for many years as its Saturn recorder. In 1949 he was one of the founders of the Western Amateur Astronomers. After 24 years at Mount Wilson Observatory, he resigned his position as solar observer in 1976 and joined the Anglo-Australian Observatory as chief night assistant, retiring in 1992. (M 20163) _ _.