Dirk Klinkenberg (15 November 1709,Haarlem – 3 March 1799,The Hague) was secretary of the Dutch government for 40 years. He was also known as a mathematician and amateur astronomer.^[1]

Jan de Munck, Dirk Klinkenberg, andJean-Philippe de Cheseaux each independently discovered theGreat Comet of 1744 (aka C/1743 X1). Klinkenberg would later also discover comets C/1748 K1 and C/1762 K1.

Anticipating the return ofHalley's Comet, he made an independent calculation of its orbit and sent Paris astronomers an estimate that it might reappear by May 1758. It was not observed until late December 1758. He was able to confirm its return independently on 24 April 1759.^[2]

Asteroid10427 Klinkenberg, named after him, was discovered on September 24, 1960 by husband and wife teamCornelis Johannes van Houten andIngrid van Houten-Groeneveld.^[1]

• 1709 births
• 1799 deaths
• 18th-century Dutch astronomers
• Scientists from Haarlem