Van den Bergh was the vice president of the International Astronomical Union from 1976 to 1982 .
This minor planet was named after Sidney Van den Bergh ( born 1929 ) , Dutch - born Canadian astronomer and former director of the Dominion Astrophysical Observatory .
Sidney Van den Bergh     was the Sidney Van den Bergh   of the International Astronomical Union from 1976 to 1982 .
This minor planet was named after Sidney Van den Bergh ( born 1929 ) , Dutch - born Canadian astronomer and former director of the Dominion Astrophysical Observatory .