1991 RS2. Discovered 1991 Sept. 9 by L. D. Schmadel and F. Börngen at Tautenburg.

Olaf Ninnemann (1947– ), German mathematician and leading expert in the field of information and documentation, is especially interested in number theory. He played a key role in the establishment of the Zentralblatt für Mathematik and has been its executive editor since 1978. (M 40711)