19139 Apian

Asteroid October 2019 yes 19139 Apian #D6D6D6 F. Börngen Karl Schwarzschild Obs. 6 April 1989 (19139) Apian 1989 GJ 81999 XP 18 Petrus Apianus(German humanist) main-belt(middle)background 4 September 2017 (JD 2458000.5) 0 28.09 yr (10,261 days) 2.7824 AU 2.3841 AU 2.5832 AU 0.0771 4.15 yr (1,516 days) 105.06° 0.2374 ms / day 8.0241° 48.222° 336.68° 5.643 0.089 km 0.265 0.039 13.5 19139 Apian (provisional designation 1989 GJ 8) is a bright background asteroid from the central regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered on 6 April 1989, by German astronomer Freimut Börngen at the Karl Schwarzschild Observatory in Tautenburg, Eastern Germany. The asteroid was named for medieval German humanist Petrus Apianus. Orbit and classification Apian is a non-family asteroid from the main belt's background population. It orbits the Sun in the central asteroid belt at a distance of 2.4–2.8 AU once every 4 years and 2 months (1,516 days; semi-major axis of 2.58 AU). Its orbit has an eccentricity of 0.08 and an inclination of 8° with respect to the ecliptic. The body's observation arc begins with a precovery published in the Digitized Sky Survey and taken at Palomar Observatory in February 1989, approximately 2 months prior to its official discovery observation at Tautenburg. Physical characteristics The asteroid's spectral type is unknown. Based on its albedo (see below), it is a stony rather than carbonaceous asteroid. Rotation period As of 2018, no rotational lightcurve of Apian has been obtained from photometric observations. The asteroid's rotation period, poles and shape remain unknown. Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Apian measures 5.643 kilometers in diameter and its surface has an albedo of 0.265. Naming This minor planet was named after Petrus Apianus (1495–1552), also known as Peter Apian, a German mathematician and cartographer, who also built astronomical instruments. He is best known for his sky atlas Astronomicum Caesareum published in 1540. The lunar crater Apianus was also named in his honor. The approved naming citation was published by the Minor Planet Center on 20 November 2002 (M.P.C. 47168). References 30em 2017-03-17 last obs. JPL Small-Body Database Browser: 19139 Apian (1989 GJ8) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2019139 Jet Propulsion Laboratory 3 January 2018 Dictionary of Minor Planet Names – (19139) Apian Schmadel Lutz D. Springer Berlin Heidelberg 856 2006 978-3-540-00238-3 10.1007/978-3-540-29925-7_9543 (19139) Apian 19139 Apian (1989 GJ8) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=19139 3 January 2018 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 3 January 2018 Asteroid 19139 Apian – Proper Elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=19139 29 October 2019 6 Joseph R. Masiero A. K. Mainzer T. Grav J. M. Bauer R. M. Cutri J. Dailey P. R. M. Eisenhardt R. S. McMillan T. B. Spahr M. F. Skrutskie D. Tholen R. G. Walker E. L. Wright E. DeBaun D. Elsbury T. IV Gautier S. Gomillion A. Wilkins November 2011 Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M The Astrophysical Journal 741 2 20 2011ApJ...741...68M 10.1088/0004-637X/741/2/68 1109.4096 3 January 2018 19139 3 January 2018 External links Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20110721225144/http://www.minorplanet.info/lightcurvedatabase.html 21 July 2011 ) 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 (15001)-(20000) – Minor Planet Center 19139 19139 19140 Jansmit 019139 Category:Discoveries by Freimut Börngen Category:Named minor planets 19890406