Viktor Knorre
Viktor Knorre | |
---|---|
Born | Viktor Karlovich Knorre 4 October 1840 |
Died | 25 August 1919 | (aged 78)
Occupation | Astronomer |
Organization(s) | University of Berlin, Berlin Observatory |
Known for | Discovered Koronis and three other minor planets |
Parent | Karl Friedrich Knorre |
Viktor Karlovich Knorre (
Biography and family background
Knorre was born into a three-generation astronomer family.
Viktor was born the fifth of fifteen children in Nikolayev (now Mykolaiv, Ukraine). He moved to Berlin in 1862 to study astronomy[4] with Wilhelm Julius Foerster. He worked at Pulkovo Observatory in 1867 as an astronomical calculator[5] and then at Berlin Observatory, where his father moved circa 1871.
Astronomer
From 1873, he was observer at the Berlin Observatory. Knorre discovered four asteroids.[6] He did not teach students at the University of Berlin; instead he gave introductions into the use of the telescopes of the Observatory. In 1892 he was appointed Professor of Astronomy. Knorre took an interest in the improvement of astronomical equipment, and published papers on an improved equatorial telescope mount, referred to as the "Knorre & Heele" mount.[4]
158 Koronis | 4 January 1876 | MPC |
215 Oenone | 7 April 1880 | MPC |
238 Hypatia | 1 July 1884 | MPC |
271 Penthesilea | 13 October 1887 | MPC |
Chess master
Knorre was also known as a strong chess player, playing among others against Adolf Anderssen, Gustav Neumann and Johannes Zukertort. He took part in several chess tournaments during the 1860s.[7][8] According to the ChessMetrics site, He was ranked among top 50 players in the world at his peak.
In the Two Knights Defense the Knorre variation (ECO code C59) is named after him. It follows the main line of the Two Knights defense for the first ten moves, and is characterized by the moves 10. Ne5 Bd6 11. d4 Qc7 12. Bd2.[9] The Knorre variation of the Open defense in the Ruy Lopez, characterized by the move 6. Nc3, is also named after Knorre.[10]
References
- ^ "JPL Small-Body Database Browser: 14339 Knorre (1983 GU)" (2016-05-02 last obs.). Jet Propulsion Laboratory. Retrieved 21 June 2016.
- ISBN 978-0-387-31022-0. Retrieved August 22, 2012.
- ^ a b "21knorre". Plicht.de. 1919-08-25. Retrieved 2011-08-15.
- ^ a b Pinigin, Gennady. "Abstract of The Astromonical Dynasty of Knorre, a paper given at JENAM 2008 astronomical conference in Vienna". University of Vienna. Retrieved 2008-08-16.
- ISBN 978-90-277-2652-0.
- ^ a b "Minor Planet Discoverers (by number)". Minor Planet Center. 23 May 2016. Retrieved 21 June 2016.
- ^ Name Index to Jeremy Gaige's Chess Tournament Crosstables, An Electronic Edition Archived July 4, 2007, at the Wayback Machine, Anders Thulin, Malmö, 2004-09-01
- ^ "Chessmetrics Player Profile: Victor Knorre".
- ^ "chess-ref.org: Two knights defence, Knorre variation (ECO: C59)".
- ^ "chess-ref.org: Ruy Lopez, Open, Knorre variation (ECO: C80)".
External links
- M. Ebell: Obituary on Viktor Knorre, in: Astronomische Nachrichten, 1919, volume 209, p. 367 (in German)
- Biographical information on Viktor Knorre
- Viktor Knorre player profile and games at Chessgames.com