4209 Briggs
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4209 Briggs, provisional designation , is a carbonaceous Alauda asteroid from the outer region of the
asteroid belt The asteroid belt is a torus-shaped region in the Solar System, located roughly between the orbits of the planets Jupiter and Mars. It contains a great many solid, irregularly shaped bodies, of many sizes, but much smaller than planets, c ...
, approximately 28 kilometers in diameter. It was discovered on 4 October 1986, by American astronomer
Eleanor Helin Eleanor Francis "Glo" Helin (née Francis, 19 November 1932 – 25 January 2009) was an American astronomer. She was principal investigator of the Near-Earth Asteroid Tracking (NEAT) program of NASA's Jet Propulsion Laboratory. (Some sources gi ...
at the Palomar Observatory in California, United States. The asteroid was named after American space physicist Geoffrey A. Briggs.


Orbit and classification

''Briggs'' is a member of the Alauda family (), a large
family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...
of typically bright carbonaceous asteroids and named after its parent body, 702 Alauda. It orbits the Sun in the
outer {{Short pages monitor


External links

*
Lightcurve plot of 4209 Briggs
Palmer Divide Observatory, B. D. Warner (2003)
Encyclopedia Astronautica – Briggs, Geoffrey A

Asteroid Lightcurve Database (LCDB)
query form

)
Dictionary of Minor Planet Names
Google books

– Observatoire de Genève, Raoul Behrend

– Minor Planet Center * * {{DEFAULTSORT:Briggs 004209 Discoveries by Eleanor F. Helin Named minor planets 19861004