1936 UC. Discovered 1936 Oct. 11 by Y. Väisälä at Turku.
Named in memory of August Kopff (1882–1960), who as Wolf’s assistant in Heidelberg discovered and observed many minor planets. In 1924 he became Director of the Astronomisches Rechen-Institut in Berlin, and after the western section moved to Heidelberg he also became director of Heidelberg-Königstuhl Observatory. He was responsible for constructing the FK3 and initiated work on the FK4. (M 3931)
Karl Reinmuth discovered the planet as 1926 TH on 1926 October 5. The planet could only have been observed on two nights which was not sufficient to derive a reliable orbit. The discovery is therefore credited to Y. Väisälä. Elliptical elements were derived by H. Walter (MPC 1897) from five positions of 1936 UC. The identity between both apparitions was found by A. Patry (MPC 1451). Kopff is also honored by a lunar crater.