1950 FJ. Discovered 1950 Mar. 20 by M. Itzigsohn at La Plata.
Named in memory of Ronaldo P. Cesco, a former director of the La Plata Observatory, an outstanding mathematician and celestial mechanician. The planet also honors his brother, Carlos U. Cesco, in charge of the program of astrometric observations of comets and minor planets at El Leoncito. (M 6954)