Named in memory of Charles Robert Darwin (1809–1882), the English naturalist who first established the theory of organic evolution; much of his research was done in Argentina, and he crossed the Andes at a pass located some 100 km south of El Leoncito. This planet also honors his second son, George Howard Darwin (1845–1912), the astronomer noted for his pioneering application of detailed dynamical analyses to problems of cosmogony and geology. (M 5282) _ _.