1990 SC4. Discovered 1990 Sept. 23 by E. F. Helin at Palomar.

Stephen C. Brewster (1945– ), a former member of the Palomar Planet Crossing Asteroid Survey, has had a long fascination with astronomy. He is a member of the Outer Planets project at the Jet Propulsion Laboratory and a member of the board of trustees of Stony Ridge Observatory. He discovered comet 105P. (M 41030)