The 13027 Geeraerts (1989 GJ4) is a Main-belt Asteroid discovered on April 3, 1989 by E. W. Elst at the European Southern Observatory named after Jef Geeraerts
Jef Raskin | Jef Aérosol | Jef Van de Wiele | Jef Poskanzer | JEF | 13027 Geeraerts |