1851 Lacroute

Main-belt asteroid October 2019 yes 1851 Lacroute #D6D6D6 9 November 1950 L. Boyer Algiers Obs. (1851) Lacroute 1950 VA Pierre Lacroute(French astronomer) main-belt(inner) 4 September 2017 (JD 2458000.5) 0 66.35 yr (24,236 days) 3.7003 AU 2.5044 AU 3.1024 AU 0.1927 5.46 yr (1,996 days) 85.690° 0.1804 ms / day 1.6660° 24.766° 343.20° 16.89 km (IRAS)18.158 0.108 km 0.049 0.0070.0745 0.009 (IRAS) 12.7 1851 Lacroute, provisional designation 1950 VA, is an asteroid from the outer region of the asteroid belt, approximately 17 kilometers in diameter. It was discovered on 9 November 1950, by French astronomer Louis Boyer at the Algiers Observatory in the capital of Algeria, Northern Africa, and named after French astronomer Pierre Lacroute. Orbit and classification Lacroute orbits the Sun in the outer main-belt at a distance of 2.5–3.7 AU once every 5 years and 6 months (1,996 days). Its orbit has an eccentricity of 0.19 and an inclination of 2° with respect to the ecliptic. As no precoveries were taken, and no prior identifications were made, the body's observation arc begins with its official discovery observation in 1950. Physical characteristics According to the surveys carried out by the Infrared Astronomical Satellite (IRAS) and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Lacroute measures 16.9 and 18.2 kilometers in diameter, and its surface has an albedo of 0.049 and 0.074, respectively. As of 2016, the body's spectral type, as well as its rotation period and shape remain unknown. Naming This minor planet was named in honor of French astronomer Pierre Lacroute (1906–1993), a known astrometrist, president of IAU's Commission 24 in the 1970s, and director of the Observatory of Strasbourg, instrumental in the establishment of the Stellar Data Center (also see SIMBAD). Lacroute also made an independent reduction of the astrometric star catalogue AGK3, using a technique involving overlapping photographic plates. The official 1851 naming citation was published by the Minor Planet Center on 1 August 1978 (M.P.C. 4419). References 30em 2017-03-18 last obs. JPL Small-Body Database Browser: 1851 Lacroute (1950 VA) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001851 Jet Propulsion Laboratory 8 June 2017 Dictionary of Minor Planet Names – (1851) Lacroute Schmadel Lutz D. Springer Berlin Heidelberg 148 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1852 (1851) Lacroute 1851 Lacroute (1950 VA) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1851 13 December 2016 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) 2009 https://archive.org/details/dictionaryminorp2008schm limited Appendix – Publication Dates of the MPCs Schmadel Lutz D. Springer Berlin Heidelberg 221 978-3-642-01964-7 10.1007/978-3-642-01965-4 E. F. Tedesco P. V. Noah M. Noah S. D. Price October 2004 IRAS Minor Planet Survey V6.0 https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab NASA Planetary Data System – IRAS-A-FPA-3-RDR-IMPS-V6.0 2004PDSS...12.....T 17 October 2019 6 Joseph R. Masiero A. K. Mainzer T. Grav J. M. Bauer R. M. Cutri C. Nugent M. S. Cabrera November 2012 Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M The Astrophysical Journal Letters 759 1 5 2012ApJ...759L...8M 10.1088/2041-8205/759/1/L8 1209.5794 6 December 2016 1851 8 June 2017 External links Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) 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 1851 1850 Kohoutek 1851 1852 Carpenter 001851 Category:Discoveries by Louis Boyer (astronomer) Category:Named minor planets 19501109