Michel Giacobini
Michel Giacobini (1873 – 1938) was a French astronomer.
He discovered a number of comets, including 21P/Giacobini-Zinner (parent body of the Giacobinids meteor shower), 41P/Tuttle-Giacobini-Kresak, and 205P/Giacobini. The latter he had discovered at Nice on September 4, 1896, but it was not seen on its return, a little less than 7 years later, and was considered a lost comet and consequently designated D/1896 R2. On September 10, 2008, amateur supernova hunters Koichi Itagaki and Hiroshi Kaneda rediscovered it, on its seventeenth return.
He worked at Nice Observatory until 1910, when he requested a transfer to the Paris Observatory. He volunteered for military service in World War I and suffered the effects of poison gas. He recovered and resumed his astronomical activities after the war.