Named in memory of Francesco Zagar (1900–1976), professor of astronomy at the University of Milan and director of the Brera Astronomical Observatory, president of IAU Commission 31 (1967–1970) and of the Italian Astronomical Society. A lover of theoretical astronomy, Zagar studied the problem of three bodies, the orbit of Pluto, stellar statistics, stellar dynamics and cosmogony. His book Astronomia Sferica e Teorica is still widely studied and was recently reprinted. (M 27331) _ _.