Named in honor of Harold B. Ridley {1919–1995}, distinguished British astrophotographer specializing in comet and asteroid astrometry and photography. For many years, Ridley has been a very active and dedicated member of the British Astronomical Association, having served as its president (1976–1978), vice president (1978–1981, 1982–1985, 1986–1987), director of the Meteor Section (1954–1968), assistant to the director of Comet Section (1975) and currently as a Council member. (M 17222) _ _.