12838 Adamsmith

Main-belt asteroid October 2019 yes 12838 Adamsmith #D6D6D6 9 March 1997 E. W. Elst La Silla Obs. (12838) Adamsmith 1997 EL 551987 DX 61997 HO 141999 RX 2 Adam Smith(moral philosopher) main-beltKoronis 4 September 2017 (JD 2458000.5) 0 30.19 yr (11,026 days) 3.0762 AU 2.6925 AU 2.8843 AU 0.0665 4.90 yr (1,789 days) 194.63° 0.2012 ms / day 1.1631° 322.05° 89.801° 6.16 km (calculated) 10.9090 0.0031 h 0.24 (assumed) S 13.012.70 0.3412.770 0.002 (R)13.22 12838 Adamsmith, provisional designation 1997 EL 55, is a stony Koronis asteroid from the outer region of the asteroid belt, approximately 6 kilometers in diameter. The asteroid was discovered on 9 March 1997, by Belgian astronomer Eric Walter Elst at ESO's La Silla Observatory in northern Chile. It was named after Scottish philosopher and economist Adam Smith. Orbit and classification Adamsmith is a member of the Koronis family, a group of co-planar, stony asteroids in the outer main-belt, named after 158 Koronis. It orbits the Sun at a distance of 2.7–3.1 AU once every 4 years and 11 months (1,789 days). Its orbit has an eccentricity of 0.07 and an inclination of 1° with respect to the ecliptic. It was first identified as 1987 DX 6 at the discovering observatory in 1987, extending the asteroid's observation arc by 10 years prior to its official discovery observation. Physical characteristics In January 2011, a rotational lightcurve of Adamsmith was obtained from photometric observations by astronomers at the Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of 10.9090 hours with a brightness variation of 0.48 magnitude (U=2). The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony Koronian asteroids of 0.24 and calculates a diameter of 6.2 kilometers with an absolute magnitude of 13.22. Naming This minor planet was named for the economist Adam Smith (1723–1790), Scottish moral philosopher and principal figure in the Scottish Enlightenment. Known for his works The Theory of Moral Sentiments (1759) and An Inquiry into the Nature and Causes of the Wealth of Nations (1776), he introduced the concept of the division of labour which represents a qualitative increase in productivity, and suggested that self-interest and competition can lead to economic prosperity. The approved naming citation was published by the Minor Planet Center 30 July 2007 (M.P.C. 60299). References 2017-05-05 last obs. JPL Small-Body Database Browser: 12838 Adamsmith (1997 EL55) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012838 Jet Propulsion Laboratory 24 June 2017 Dictionary of Minor Planet Names – (12838) Adamsmith Schmadel Lutz D. Springer Berlin Heidelberg 829 2003 https://books.google.com/books?id=aeAg1X7afOoC&pg=PA829 978-3-540-29925-7 30 April 2016 12838 Adamsmith (1997 EL55) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=12838 30 April 2016 12838 30 April 2016 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 30 April 2016 6 Adam Waszczak Chan-Kao Chang Eran O. Ofek Russ Laher Frank Masci David Levitan Jason Surace Yu-Chi Cheng Wing-Huen Ip Daisuke Kinoshita George Helou Thomas A. Prince Shrinivas Kulkarni September 2015 Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W The Astronomical Journal 150 3 35 2015AJ....150...75W 10.1088/0004-6256/150/3/75 1504.04041 30 April 2016 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 30 April 2016 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 (10001)-(15000) – Minor Planet Center 12838 12838 (12839) 1997 FB2 012838 Category:Discoveries by Eric Walter Elst Category:Named minor planets 19970309