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Viktor Knorre

Viktor Knorre astronomer

astronomer
The basics
Quick Facts
Intro astronomer
A.K.A. Viktor Knorre
Countries Russian Empire German Empire
Occupations Astronomer Chess player
Type Science Sports
Gender male
Birth 4 October 1840 (Mykolaiv)
Death 25 August 1919 (Berlin)
Star sign LibraLibra
Family
Father: Karl Friedrich Knorre
Siblings: Eugen Karl von Knorre
Notable Works discoverer of asteroids
The details
Biography

Viktor Karlovich Knorre Russian: Виктор Карлович Кнорре(4 October 1840 – 25 August 1919) was a Russian astronomer of German ethnic origin. He worked in Nikolaev, Pulkovo and Berlin and is best known for having discovered 158 Koronis and three other minor planets. Knorre's father, Karl Friedrich Knorre, and grandfather, Ernst Friedrich Knorre, were also prominent astronomers. Recently, the main-belt asteroid 14339 Knorre was named in honor of the three generations of Knorre astronomers.

Biography and family background

Knorre was born into a three-generation astronomer family. His grandfather, Ernst Friedrich Knorre (1759–1810), had moved from Germany to Dorpat (now Tartu, Estonia) where he worked (1803–10) as Observator for the Dorpat observatory (opened in 1802) and professor of Mathematics at the University of Dorpat. Victor Knorre's father, Karl Friedrich Knorre (1801–1883), set up and was director of the Nikolayev Astronomical Observatory starting in 1827.

Viktor was born the fifth of fifteen children in Nikolayev (now Mykolayiv, Ukraine). He moved to Berlin in 1862 to study astronomy with Wilhelm Julius Foerster. He worked at Pulkovo Observatory in 1867 as an astronomical calculator 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. 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.

Minor planets discovered: 4 
158 Koronis January 4, 1876 MPC
215 Oenone April 7, 1880 MPC
238 Hypatia July 1, 1884 MPC
271 Penthesilea October 13, 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.

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. The Knorre variation of the Open defense in the Ruy Lopez, characterized by the move 6. Nc3, is also named after Knorre.

The contents of this page are sourced from Wikipedia article. The contents are available under the CC BY-SA 4.0 license.
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Sources
References
http://articles.adsabs.harvard.edu/full/1919AN....209..367E
http://chess-ref.org/opening.php?id=1308
http://chess-ref.org/opening.php?id=1412
http://chessmetrics.com/cm/CM2/PlayerProfile.asp?Params=199510SSSSS3S066190000000111000000000016510100
http://isni.org/isni/0000000010666448
http://socialarchive.iath.virginia.edu/ark:/99166/w65f1fgw
http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2014339
http://www.anders.thulin.name/SUBJECTS/CHESS/CTCIndex.pdf
http://www.chessgames.com/perl/chessplayer?pid=16040
http://www.minorplanetcenter.net/iau/lists/MPDiscsNum.html
http://www.plicht.de/chris/21knorre.htm
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