University of Helsinki.
He spent his student years at his father"s university, graduating as a filosofie magister from the Faculty of Physics and Mathematics in 1860. In 1871 he was called by the Royal Swedish Academy of Sciences to be its astronomer and head of the Stockholm Observatory. The lunar crater Gyldén and the minor planet 806 Gyldenia were named in his honor.
Royal Swedish Academy of Sciences. Russian Academy of Sciences]
From 1872 he was a member of the Academy.