Jérôme Lalande (1732–1807)
Born 1732 CE, died 1807 CE.
Joseph Jérôme Lefrançois de Lalande (French: [lalɑ̃d]; 11 July 1732 – 4 April 1807) was a French astronomer, freemason and writer. He is known for having estimated a precise value of the astronomical unit (the distance from the Earth to the Sun) using measurements of the transit of Venus in 1769.
Text from the Wikipedia article Jérôme_Lalande, licensed CC BY-SA 4.0.