Named in honor of Simon and Jacqueline Mitton, astronomers in Cambridge, England. Originally at the Mullard Radio Astronomy Observatory, Simon made comprehensive high-resolution observations of Cygnus A with the Cambridge One-Mile Telescope. Interested in the correlation of radio and optical observations, he moved to the Institute of Astronomy in 1972 and collaborated with Jacqueline on a study of the optical spectrum of Cygnus A. She also worked on equivalent widths and curves of growth. Both subsequently turned their interests to the dissemination of astronomy, he as editor of the Cambridge Encyclopedia of Astronomy and astronomy publisher for Cambridge University Press, she as editor of the Journal of the British Astronomical Association. (M 17222) _ _.