1918 Aiguillon

Dark main-belt asteroid October 2019 yes 1918 Aiguillon #D6D6D6 19 October 1968 G. Soulié Bordeaux Obs. (1918) Aiguillon 1968 UA Aiguillon (French town) main-belt(outer) 4 September 2017 (JD 2458000.5) 0 62.93 yr (22,985 days) 3.6118 AU 2.7755 AU 3.1936 AU 0.1309 5.71 yr (2,085 days) 145.64° 9.1961° 195.12° 245.30° 19.536 0.090 km20 8 km (generic) 0.062 0.012 11.7 1918 Aiguillon (provisional designation 1968 UA), is a dark asteroid from the outer region of the asteroid belt, approximately 20 kilometers in diameter. It was discovered by French astronomer Guy Soulié at Bordeaux Observatory, France, on 19 October 1968. The asteroid was named for the French town of Aiguillon. Orbit and classification Aiguillon orbits the Sun in the outer main-belt at a distance of 2.8–3.6 AU once every 5 years and 9 months (2,085 days). Its orbit has an eccentricity of 0.13 and an inclination of 9° with respect to the ecliptic. The first observation was a precovery taken at Palomar Observatory in 1954, extending the body's observation arc by 14 years prior to its official discovery observation. Physical characteristics According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Aiguillon measures 19.5 kilometers in diameter, and its surface has an albedo of 0.062. Based on a generic magnitude-diameter conversion, the body measures between 12 and 28 kilometers, for an albedo in the range of 0.05 to 0.25 and an absolute magnitude of 11.7. As of 2017, Aiguillons composition, rotation period and shape remain unknown. Naming This minor planet was named for the discoverer's birthplace, Aiguillon, a small town on the Garonne river in France. The approved naming citation was published by the Minor Planet Center on 1 December 1979 (M.P.C. 5038). References 30em 2017-05-05 last obs. JPL Small-Body Database Browser: 1918 Aiguillon (1968 UA) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001918 Jet Propulsion Laboratory 1 July 2017 Dictionary of Minor Planet Names – (1918) Aiguillon Schmadel Lutz D. Springer Berlin Heidelberg 154 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1919 (1918) Aiguillon 1918 Aiguillon (1968 UA) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1918 10 December 2016 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 10 December 2016 Absolute Magnitude (H) NASA/JPL http://neo.jpl.nasa.gov/glossary/h.html https://web.archive.org/web/20010302182040/http://neo.jpl.nasa.gov/glossary/h.html dead 2 March 2001 2 January 2016 1918 11 April 2017 6 Joseph R. Masiero T. Grav A. K. Mainzer C. R. Nugent J. M. Bauer R. Stevenson S. Sonnett August 2014 Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 10 December 2016 External links Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20110721225144/http://www.minorplanet.info/lightcurvedatabase.html 21 July 2011 ) Dictionary of Minor Planet Names, Google books Asteroids and comets rotation curves, CdR https://web.archive.org/web/20160729213840/http://obswww.unige.ch/~behrend/page_cou.html 29 July 2016 – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1918 1917 Cuyo 1918 1919 Clemence Category:Background asteroids Aiguillon Aiguillon 19681019