1218 Aster

Main-belt asteroid October 2019 yes 1218 Aster #D6D6D6 001218-asteroid shape model (1218) Aster.png Shape model of Aster from its lightcurve 29 January 1932 K. Reinmuth Heidelberg Obs. (1218) Aster 1932 BJ1978 TJ 51978 VQ 12 ' ae s t @raster Aster (genus of flowers) main-belt(inner) 4 September 2017 (JD 2458000.5) 0 85.35 yr (31,173 days) 2.5110 AU 2.0158 AU 2.2634 AU 0.1094 3.41 yr (1,244 days) 56.714° 0.2894 ms / day 3.1572° 63.820° 69.372° 5.554 0.084 km 0.332 0.043 13.2 1218 Aster, provisional designation 1932 BJ, is a bright asteroid from the inner regions of the asteroid belt, approximately 5.5 kilometers in diameter. Discovered by Karl Reinmuth in 1932, it was later named after the flowering plant Aster. Discovery Aster was discovered on 29 January 1932, by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany. Two nights later, it was independently discovered by Italian astronomer Mario A. Ferrero at the Pino Torinese Observatory at Turin, Italy. Classification and orbit Aster orbits the Sun in the inner main-belt at a distance of 2.0–2.5 AU once every 3 years and 5 months (1,244 days). Its orbit has an eccentricity of 0.11 and an inclination of 3° with respect to the ecliptic. The asteroid's observation arc begins at the discovering observatory, one week after its official discovery observation. Physical characteristics Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Aster measures 5.554 kilometers in diameter and its surface has an albedo of 0.332. Lightcurves As of 2017, rotational lightcurve of Aster has been obtained.Minor Planet Lightcurve Data Organ Mesa Observatory Asteroid Lightcurve Research 1218 Aster Phased Plot http://aslc-nm.org/1218Aster.jpg Fred Pilcher's Minor Planet Lightcurves Astronomical Society of Las Cruces (ASLC) 1 June 2018 The body's rotation period, shape and variation in magnitude shifted from unknown movements to specific identifiable spin/shape determinations. Naming The minor planet was named after the genus of flowers, Aster (also see List of minor planets named after animals and plants Plants). The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 113). References 30em 2017-06-04 last obs. JPL Small-Body Database Browser: 1218 Aster (1932 BJ) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001218 https://web.archive.org/web/20200918005431/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001218 dead 18 September 2020 Jet Propulsion Laboratory 23 July 2017 Dictionary of Minor Planet Names – (1218) Aster Schmadel Lutz D. Springer Berlin Heidelberg 101 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1219 (1218) Aster 1218 Aster (1932 BJ) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1218 23 July 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 23 July 2017 1218 23 July 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 1218 1217 Maximiliana 1218 1219 Britta 001218 Category:Discoveries by Karl Wilhelm Reinmuth Category:Named minor planets 19320129