Named in honor of Colin A. Ronan {1920–1995}, author and specialist in the history and philosophy of science. Particularly interested in the moon and planets, he has written more than 20 books on astronomy. He has played key roles in the administration of the British Astronomical Association and is its current president. In addition he has been director of the Association’s Historical Section (1953–1965) and editor of its Journal (1965–1985). (M 17222) _ _.