Ernst Christoph Friedrich Knorre (11 December 1759 – 1 December 1810) was a German-born astronomer who lived and worked in present-day Estonia as a founding professor of mathematics at the Universität Dorpat and chief observator for the Dorpat Observatory. His son Karl Friedrich Knorre and grandson Viktor Knorre were also notable astronomers. Recently NASA named an asteroid in honor of the three generations of Knorre astronomers.
Viktor Karlovich Knorre (Russian: Виктор Карлович Кнорре; 4 October 1840 – 25 August 1919) was a Russian astronomer of German 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.
Karl Khristoforovich Friedrich Knorre; Russian: Карл Христофорович Кнорре (28 March 1801 – 29 August 1883) was a Russian astronomer of Baltic German ethnic origin who is best known for founding the Nikolayev Astronomical Observatory in 1827. Knorre's father, Ernst Friedrich Knorre, and his son, Viktor Knorre, were also prominent astronomers. Recently NASA named an asteroid in honor of the three generations of Knorre astronomers.