Career
Initially assistant astronomer in Lyon (1900–1904) and at the Paris observatory: assistant astronomer until 1925, he went on as astronomer from 1925 to 1947. From 1937 to 1947 he was also the director of the Pic du Midi observatory and directed the Carte du Ciel from 1922 to 1947. The asteroid (1280) Baillauda is named in his memory, while the Baillaud crater on the moon, and Baillaud asteroid (11764) Benbaillaud, are referring to his father Benjamin Baillaud.