1412 Lagrula

Asteroid from the inner regions of the asteroid belt October 2019 yes 1412 Lagrula #D6D6D6 19 January 1937 L. Boyer Algiers Obs. (1412) Lagrula 1937 BA1929 US1962 XM Philippe Lagrula (astronomer) main-beltFlora 16 February 2017 (JD 2457800.5) 0 86.64 yr (31,644 days) 2.4645 AU 1.9648 AU 2.2147 AU 0.1128 3.30 yr (1,204 days) 145.58° 0.2990 ms / day 4.7178° 66.118° 14.052° 7.78 1.36 km7.806 0.075 km9.068 0.047 km23 3 km23.98 km (calculated) 5.882 0.001 h5.9176 0.0001 h 0.058 (assumed)0.060.2378 0.02840.318 0.0440.36 0.14 S 11.81 0.0412.312.412.6212.73 0.75 1412 Lagrula, provisional designation 1937 BA, is an asteroid from the inner regions of the asteroid belt, approximately 7 or 23 kilometers in diameter, depending on the body's divergent reflectivity measurements. It was discovered on 19 January 1937, by French astronomer Louis Boyer at the North African Algiers Observatory in Algeria. It was later named after French astronomer Philippe Lagrula. Classification and orbit Lagrula is a presumed member of the Flora family, a large group of stony S-type asteroids in the inner main-belt. It orbits the Sun at a distance of 2.0–2.5 AU once every 3 years and 4 months (1,204 days). Its orbit has an eccentricity of 0.11 and an inclination of 5° with respect to the ecliptic. First identified as 1929 US at Lowell Observatory in 1929, the body's observation arc was extended by 8 years prior to its official discovery observation at Algiers. Physical characteristics Photometry During March and April 2013, photometric observations of Lagrula were made over ten nights by Italian astronomer Giovanni Casalnuovo at Eurac Observatory (C62) in Bolzano, Italy. Lightcurve analysis gave a rotation period of 5.9176 hours and a brightness variation of 0.28 magnitude (U=2+). In January 2016, a more refined period of 5.882 hours with an amplitude of 0.44 magnitude was obtained from a bimodal lightcurve by Spanish astronomer group OBAS, Observadores de Asteroides (U=3). Diameter and albedo According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Lagrula measures 7.8 kilometers in diameter, and its surface has an albedo of 0.318 and 0.36, respectively (most recent results only). However, the Collaborative Asteroid Lightcurve Link assumes a carbonaceous albedo of 0.058 and calculates a diameter of 23.98 kilometers, which is in agreement with Giovanni Casalnuovo, who published a diameter of 23 3 and an albedo of 0.06 using an absolute magnitude of 11.81. Casalnuovo assumed a C-type, rather than an S-type, because he found an average V–R color index of 0.37 0.05 magnitude. Naming This minor planet was named after French astronomer Joanny-Philippe Lagrula (1870–1941), discoverer of the minor planet 775 Lumière and director of the Quito Astronomical Observatory and Algiers Observatory. Naming citation was neither published in The Names of the Minor Planets nor in the Minor Planet Circulars, but researched and compiled by astronomer and author Lutz D. Schmadel, based on his private communications with his colleges (LDS). References 30em 2016-06-16 last obs. JPL Small-Body Database Browser: 1412 Lagrula (1937 BA) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001412 Jet Propulsion Laboratory 9 January 2017 Dictionary of Minor Planet Names – (1412) Lagrula Schmadel Lutz D. Springer Berlin Heidelberg 114 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1413 (1412) Lagrula 1412 Lagrula (1937 BA) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1412 9 January 2017 Dictionary of Minor Planet Names – Introduction, Source of Information Schmadel Lutz D. Springer Berlin Heidelberg 16 1997 https://books.google.com/books?id=eHv1CAAAQBAJ&pg=PA16 978-3-662-06617-1 9 January 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 119293330 9 January 2017 1412 9 January 2017 Casalnuovo, Giovanni Battista October 2013 Lightcurve Photometry, H-G Parameters and Estimated Diameter for 1412 Lagrula http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2013MPBu...40..188C The Minor Planet Bulletin 40 4 188 1052-8091 2013MPBu...40..188C 9 January 2017 6 A. Mainzer T. Grav J. Masiero E. Hand J. Bauer D. Tholen R. S. McMillan T. Spahr R. M. Cutri E. Wright J. Watkins W. Mo C. Maleszewski November 2011 NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results The Astrophysical Journal 741 2 25 2011ApJ...741...90M 10.1088/0004-637X/741/2/90 1109.6407 118700974 6 C. R. Nugent A. Mainzer J. Bauer R. M. Cutri E. A. Kramer T. Grav J. Masiero S. Sonnett E. L. Wright September 2016 NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos The Astronomical Journal 152 3 12 2016AJ....152...63N 10.3847/0004-6256/152/3/63 1606.08923 119289027 free 6 Amadeo Aznar Macias Alfonso Carreno Garcerain Enrique Arce Masego Pedro Brines Rodriguez Juan Lozano de Haro Alvaro Fornas Silva Gonzalo Fornas Silva Vicente Mas Martinez Onofre Rodrigo Chiner David Herrero Porta July 2016 Twenty-one Asteroid Lightcurves at Group Observadores de Asteroides (OBAS): Late 2015 to Early 2016 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016MPBu...43..257A The Minor Planet Bulletin 43 3 257–263 1052-8091 2016MPBu...43..257A 9 January 2017 6 Peter Veres Robert Jedicke Alan Fitzsimmons Larry Denneau Mikael Granvik Bryce Bolin Serge Chastel Richard J. Wainscoat William S. Burgett Kenneth C. Chambers Heather Flewelling Nick Kaiser Eugen A. Magnier Jeff S. Morgan Paul A. Price John L. Tonry Christopher Waters November 2015 Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V Icarus 261 34–47 2015Icar..261...34V 10.1016/j.icarus.2015.08.007 1506.00762 53493339 9 January 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 1412 1411 Brauna 1412 1413 Roucarie 001412 Category:Discoveries by Louis Boyer (astronomer) Category:Named minor planets 19370119