Medals: University of Liège 1969, ADION 1972, T. Hagecius de Hajek 1980, Nagy Ernö 1981, Zagreb Univ. 1982, City of Paris 1982, Collège de France 1986, Prix Jules Janssen of the Societé Astronomique de France 1992.
At different times a number of other distinguished people, including Adigun Ade Abiodun, Vladimír Kopal, Luboš Perek, Nandasiri Jasentuliyana, served at various positions.