He worked in the Observatoire Royal de Belgique (Belgian Royal Observatory), situated in the town of Uccle (after which the asteroid 1276 Ucclia is named).
Pracoval v Observatoire Royal de Belgique (Belgickom kráľovskom observatóriu) v meste Uccle (po ktorom je pomenovaná planétka 1276 Ucclia).