1934 CB. Discovered 1934 Feb. 5 by K. Reinmuth at Heidelberg.
Named on the occasion of the 400th anniversary of the establishment of the Gregorian Calendar in memory of its inventor, Luigi Lilio (ca. 1510–1576), an obscure physician from southern Italy. (M 7471)
Name proposed by B. G. Marsden, who found the identifications involving this planet.