1938 DN1. Discovered 1938 Feb. 20 by K. Reinmuth at Heidelberg.
Named in honor of Toru Kumon, a pioneer in the education of children in Japan and founder of the Kumon Education Research Center in Osaka. (M 12973)
Name proposed by S. Nakano, who found the identification involving this planet, and whose stay at the Smithsonian Astrophysical Observatory has been partly supported by the Kumon Center.