1220 Crocus

Main-belt asteroid October 2019 yes 1220 Crocus #D6D6D6 001220-asteroid shape model (1220) Crocus.png Shape model of Crocus from its lightcurve 11 February 1932 K. Reinmuth Heidelberg Obs. (1220) Crocus 1932 CU1955 PC ˈ k r oʊ k ə scrocus Crocus main-beltEos 4 September 2017 (JD 2458000.5) 0 85.31 yr (31,161 days) 3.2243 AU 2.7807 AU 3.0025 AU 0.0739 5.20 yr (1,900 days) 204.16° 0.1894 ms / day 11.365° 113.34° 333.41° 17.866 0.175 491.4 0.1 0.114 0.020 S 11.72 1220 Crocus, provisionally designated 1932 CU, is a stony Eoan asteroid and slow rotator from the outer regions of the asteroid belt, approximately 17 kilometers in diameter. It was discovered on 11 February 1932, by German astronomer Karl Reinmuth at Heidelberg Observatory in southwest Germany. Orbit and classification Crocus is a member of the Eos family, a collisional population of mostly stony composition. It orbits the Sun at a distance of 2.8–3.2 AU once every 5 years and 2 months (1,900 days). Its orbit has an eccentricity of 0.07 and an inclination of 11° with respect to the ecliptic. A Physical characteristics The asteroid has been characterized as a stony S-type asteroid. In December 2014, a rotational lightcurve of Crocus was obtained from photometric observations by an international collaboration of several astronomers from Europe and the United States. Lightcurve analysis gave a long rotation period of 491 hours with a brightness variation of 1.00 magnitude (U=3). Naming This minor planet was later named after the genus of flowering plants, Crocus, in the iris family. References 30em 2017-06-05 last obs. JPL Small-Body Database Browser: 1220 Crocus (1932 CU) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001220 https://web.archive.org/web/20200918013229/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001220 18 September 2020 Jet Propulsion Laboratory 15 June 2017 Dictionary of Minor Planet Names – (1220) Crocus Schmadel Lutz D. Springer Berlin Heidelberg 102 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1221 (1220) Crocus 1220 Crocus (1932 CU) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1220 15 June 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 15 June 2017 1220 15 June 2017 6 Frederick Pilcher Vladimir Benishek Lorenzo Franco A. W. Harris Daniel A. III Klinglesmith Jesse Hanowell Caroline Odden Rocco Amorosso Thomas Jhost Ava Larocca Sarp Orgul Julia Xia July 2015 Rotation Period Determination for 1220 Crocus http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015MPBu...42..155P The Minor Planet Bulletin 42 3 155–157 1052-8091 2015MPBu...42..155P 15 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 1220 1219 Britta 1220 1221 Amor 001220 Category:Discoveries by Karl Wilhelm Reinmuth Category:Named minor planets 001220 19320211 Category:Minor planets named after their provisional designation