Marcin Odlanicki Poczobutt
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Marcin Odlanicki Poczobutt (30 October 1728 – 7 February 1810) was a Polish-Lithuanian astronomer, jesuit and mathematician.
He became mathematics professor and rector of the Vilnius University where he organized the construction of the university's observatory and the purchase of the equipment. He also made observations of solar and lunar eclipses, comets and asteroids. In addition, he made measurements of Mercury to compute an orbit, and also determined the geographic coordinates of locations in Lithuania, including Vilnius. He was granted the title of the King's Astronomer and became a member of the British Royal Academy of Science.
Poczobutt crater on the Moon was named after him.