Named in memory of Takeo Hatanaka (1914–1963), professor of astrophysics at the University of Tokyo and on the staff of the Tokyo Astronomical Observatory. Hatanaka’s theoretical work covered a wide variety of astrophysical problems, involving planetary nebulae, the solar atmosphere and stellar evolution. He also pioneered research on radio astronomy in Japan and wrote enlightening books. As a member of the Japanese Science Council he was very closely involved in the early development of the national space program. (M 16043) _ _.