a tiny and difficult double-double star at 18:45 / +5°30', named Tweedledee and Tweedledum by Finsen, who was, by the time of his 1953 discovery, struck by the nearly identical position angles and separations of it. Membership, awards and recognition The asteroid 1794 Finsen is named after him. Finsen first observed the asteroid in 1937. The geological feature Finsen Dorsum on the asteroid 433 Eros is named after him. Finsen had detected Eros' elongated shape. President of the ASSA 1949–1950 Awarded the Gill Medal in 1967. Fellow of the Royal Astronomical Society – proposed in 1925 by Robert T. A. Innes References External links Genealogy https://web.archive.org/web/20040922162726/http://www.saao.ac.za/assa/html/his-astr_-_finsen_ws.html 1905 births 1979 deaths South African astronomers