Jean Chacornac (21 June 1823 – 23 September 1873) was a French astronomer and discoverer of a comet and several asteroids.
[2][3] He was born in Lyon and died in Saint-Jean-en-Royans, southeastern France.
[4] This comet is thought to be the source of the current Eta Eridanids meteors.
[5] He also independently discovered 20 Massalia, which discovery is credited to the Italian astronomer Annibale de Gasparis, however.
[6] Jean Chacornac was awarded the Lalande Prize in 1855, 1856 and in 1863.