Named in memory of Jean-Charles Houzeau (1820–1888), second director of the Observatoire Royal de Bruxelles and one of the greatest Belgian astronomers. He is best known internationally as co-author with A.-B. Lancaster, of the Bibliographie générale de l’astronomie jusqu’à 1880; he also wrote the Vade-mecum de l’astronomie. (M 8800) _ _.