Dimitri Pourbaix was a kind, passionate and enthusiastic person. He was a senior FNRS research associate (Maître de recherches FNRS) at Université libre de Bruxelles. He maintained the 9th Catalogue of Spectroscopic Binary
Orbits (SB9) for the former IAU Commission 26. He has been president of the IAU Commission 30 (Radial Velocities). He was passionately involved in the Gaia space mission, particularly in connection to issues related to binary
stars. He enjoyed sharing his passion with the public through lectures at ULB and astronomy camps in the Ardennes.