Home > Andrew Claude de la Cherois Crommelin

Born in Ireland, but his parents moved to England when he was a small child. Worked at the Royal Observatory in Greenwich. Went on several solar eclipse expeditions.

An expert on comets, in 1929 his calculation of orbits of what were then called Comet Forbes 1928 III, Comet Coggia-Winnecke 1873 VII, and Comet Pons 1818 II showed that these comets were one and the same periodic comet. The comet thus received the rather unwieldy name "Comet Pons- Coggia- Winnecke- Forbes". In 19481948 is a leap year starting on Thursday (link will take you to calendar). Events January January 1 Nationalisation of UK railways to form British Railways. Arab militants lay siege to the Jewish Quarter of the Old City of Jerusalem. First day of the Ital, he was posthumously honored when the comet was renamed after him alone (today, in modern nomenclature, it is designated 27P/Crommelin ). This is similar to the case of Comet EnckeComets Comet Encke (officially designated 2P/Encke is a periodic comet, named after Johann Franz Encke, who through laborious study of its orbit and many calculations was able to link multiple observations in the years 1786, 1795, 1805 and 1818 to the sam, where the periodic comet is named after the person determining the orbit rather than the possibly-multiple discoverers and re-discoverers at each apparition.

Named after Crommelin

• Comet 27P/Crommelin
• Crommelin crater , The MoonFor other moons in the solar system see natural satellite. For other uses see Moon (disambiguation). The Moon is the only natural satellite of Earth. It has no formal name other than "The Moon" although it is occasionally called Luna ( Latin for moon to d
• Crommelin crater , MarsMars is the fourth planet from the Sun in the solar system, named after the Roman god of war (the counterpart of the Greek Ares), on account of its blood red color as viewed in the night sky. Mars has two small moons, Phobos and Deimos, both small and odd