Jean Chacornac

Jean Chacornac (June 21, 1823 – September 23, 1873) was a French astronomer and discoverer of a comet and several asteroids.

He was born in Lyon and died in Saint-Jean-en-Royans, southeastern France. Working in Marseille and Paris, he discovered six asteroids in the asteroid belt (see table) and C/1852 K1 (Chacornac), a parabolic comet in 1852. This comet is thought to be the source of the current Eta Eridanids meteors. He also independently discovered 20 Massalia, which discovery is credited to the Italian astronomer Annibale de Gasparis, however.

Jean Chacornac was awarded the Lalande Prize in 1855 and 1856. The asteroid 1622 Chacornac and the lunar crater Chacornac are named in his honour.