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Named for: Dutch astronomer Henricus G. Bakhuysen (1838-1923)
Hendricus Gerardus van de Sande Bakhuyzen (Apr 2, 1838, The Hague – Jan 8, 1923, Leiden) was a Dutch astronomer.
He studied astronomy under Frederik Kaiser.
After he got his degree, he was a high school teacher from 1864–1867, during which time he wrote a very successful textbook on mechanics. In 1867 he became a professor at the Technical College in Delft.
He became director of the Leiden Observatory in 1872 upon the death of Frederik Kaiser. He retired in 1908.