Comet Borrelly / b ɒ ˈ r ɛ l i / or Borrelly's Comet (official designation: 19P/Borrelly ) is a comet with a period of 6.85 years that was visited by the spacecraft Deep Space 1 in 2001. The comet last came to perihelion (closest approach to the Sun) on February 1, 2022 and will next come to perihelion on December 11, 2028.
3-408: Deep Space 1 returned images of the comet's nucleus from 3400 kilometers away. At 45 meters per pixel, it was the highest resolution view ever seen of a comet. The comet was discovered by Alphonse Borrelly during a routine search for comets at Marseilles , France on December 28, 1904. On September 21, 2001 the spacecraft Deep Space 1 , which was launched to test new equipment in space, performed
6-457: A flyby of Borrelly. It was steered toward the comet during the extended mission of the craft, and presented an unexpected bonus for the mission scientists. Despite the failure of a system that helped determine its orientation, Deep Space 1 managed to send back to Earth what were, at the time, the best images and other science data from a comet. Alphonse Borrelly Alphonse Louis Nicolas Borrelly (December 8, 1842 – February 28, 1926)
9-633: Was a French astronomer born in Roquemaure, Gard . He joined the Marseille Observatory in 1864. In the course of his career, he discovered a number of asteroids and comets , including the periodic comet 19P/Borrelly . The French Academy of Sciences awarded him the Prix Valz for 1903 and the Prix Lalande for 1909. The asteroid 1539 Borrelly was named in his honor. In 1913, he received
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