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Carl Alvar Wirtanen (November 11, 1910 – March 7, 1990) was an American astronomer and discoverer of comets and minor planets who worked at Lick Observatory. He was of Finnish ancestry. Wirtanen was born in Kenosha, Wisconsin. After visiting the observatory in Kenosha with his violin teacher at age 12, he started grinding mirrors.
Mar 7, 1990 · Carl Alvar Wirtanen was an American astronomer and discoverer of comets and minor planets who worked at Lick Observatory. He was of Finnish ancestry.
Sep 1, 1991 · Wirtanen completed his undergraduate and graduate studies at the University of Virginia, where he was awarded the B.S. (1936) and A.M. (1939) degrees. He majored in astronomy, mathematics, and physics. Wirtanen's association with Lick Observatory began 1 October 1941 as an observing assistant.
- A. R. Klemola
- 1991
1685 Toro ( prov. designation: 1948 OA) is an asteroid and near-Earth object of the Apollo group on an eccentric orbit. It was discovered on 17 July 1948, by American astronomer Carl Wirtanen at Lick Observatory on Mount Hamilton, California.
Mar 7, 1990 · Wirtanen, Carl Alvar. Born Kenosha, Wisconsin, USA, 11 November 1910. Died Santa Cruz, California, USA, 7 March 1990. Carl Wirtanen was noted for the carefulness and dedication to his work across a long astronomical career and is remembered for the Shane‐Wirtanen counts of galaxies.
Nov 26, 2018 · Discovery and history. It was on January 15, 1948 that Carl Alvar Wirtanen, a 37-year-old senior observing assistant at the Lick Observatory in California, detected the faint image of a 17th magnitude comet on a photographic plate. Initially, astronomers determined 46P/Wirtanen to have an orbital period of roughly 6.7 years.
![46P/Wirtanen [2018] - Cometografía](https://images.search.yahoo.com/search/images?p=Carl+A.+Wirtanen+wikipedia&ei=UTF-8&th=95.1&tw=94.7&imgurl=https%3A%2F%2Fcometografia.es%2Fwp-content%2Fuploads%2FCarl_Wirtanen.jpg&rurl=https%3A%2F%2Fcometografia.es%2F046P-2018%2F&size=160KB&name=46P%2FWirtanen+%5B2018%5D+-+Cometograf%C3%ADa&oid=3&h=633&w=630&turl=https%3A%2F%2Ftse1.mm.bing.net%2Fth%3Fid%3DOIP.9mQLQgt2L5rTqSP27kLrrgEqEs%26pid%3DApi%26rs%3D1%26c%3D1%26qlt%3D95%26w%3D94%26h%3D95&tt=46P%2FWirtanen+%5B2018%5D+-+Cometograf%C3%ADa&sigr=zC4ctcLikxuy&sigit=QNP.3gvmApkr&sigi=g7IQj8Yh_HtA&sign=lClBUAotaeyZ&sigt=lClBUAotaeyZ "46P/Wirtanen [2018] - Cometografía")
