14871 Pyramus

Main-belt asteroid April 2018 yes 14871 Pyramus #D6D6D6 13 October 1990 L. D. SchmadelF. Börngen Karl Schwarzschild Obs. (14871) Pyramus 1990 TH 71972 TJ 31978 TW 4 Pyramus(Classical mythology) main-belt(outer)backgroundZhongguo 23 March 2018 (JD 2458200.5) 0 62.73 yr (22,913 d) 4.0337 AU 2.5706 AU 3.3021 AU 0.2215 6.00 yr (2,192 d) 266.76° 0.1643 ms / day 0.9882° 5.9989° 314.20° 9 km (estimated at 0.06)9.180 0.302 0.069 0.020 13.9 14871 Pyramus (provisional designation 1990 TH 7) is a dark Zhongguo asteroid from the outermost region of the asteroid belt, approximately 9 km mi off 1 us in diameter. It was discovered on 13 October 1990 by German astronomers Lutz Schmadel and Freimut Börngen at the Karl Schwarzschild Observatory in Tautenburg, Germany. The asteroid was named for Pyramus from classical mythology. Orbit and classification Pyramus is a non-family asteroid from the main belt's background population. It is a member of the small group of Zhongguo asteroids, located in the 2 : 1 mean motion resonance with the giant planet Jupiter. Contrary to the nearby unstable Griqua group, the orbits of the Zhongguos are stable over half a billion years. It orbits the Sun in the outer main-belt at a distance of 2.6–4.0 AU once every 6.00 years (2,192 days; semi-major axis of 3.3 AU). Its orbit has an eccentricity of 0.22 and an inclination of 1° with respect to the ecliptic. The first precovery was taken at Palomar Observatory in 1954, extending the asteroid's observation arc by 36 years prior to its discovery. Physical characteristics Diameter and albedo According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Pyramus measures 9.2 kilometers in diameter and its surface has an albedo of 0.069. This is in line with a generic absolute magnitude-to-diameter conversion that gives a diameter of 4 to 9 kilometers for an albedo between 0.05 and 0.25. Lightcurves As of 2018, no rotational lightcurve has been obtained of Pyramus. The asteroid's rotation period, pole and shape remain unknown. Naming This minor planet was named from Greco-Roman mythology after Pyramus, the lover of Thisbe, from which the tragedy of Romeo and Juliet ultimately originated. As narrated in Ovid's Metamorphoses, the two ill-fated lovers committed suicide as their parents were against their marriage. The asteroid's name was proposed by Austrian amateur astronomer Herbert Raab. The citation mentions that the "two lovers are now finally united forever in the asteroid belt". The approved naming citation was published by the Minor Planet Center on 6 January 2003 (M.P.C. 47301). See also 88 Thisbe – A large main belt asteroid named after Thisbe References 30em 2017-03-27 last obs. JPL Small-Body Database Browser: 14871 Pyramus (1990 TH7) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2014871 Jet Propulsion Laboratory 26 June 2017 Dictionary of Minor Planet Names – (14871) Pyramus, Addendum to Fifth Edition: 2003–2005 Schmadel Lutz D. Springer Berlin Heidelberg 88–89 2006 978-3-540-34360-8 10.1007/978-3-540-34361-5_897 (14871) Pyramus [3.29, 0.23, 1.0] 14871 Pyramus (1990 TH7) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=14871 6 April 2016 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 20 May 2016 Asteroid 14871 Pyramus – Proper Elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=14871 29 October 2019 F. Roig D. Nesvorný S. Ferraz-Mello September 2002 Asteroids in the 2 : 1 resonance with Jupiter: dynamics and size distribution [ Erratum: 2002MNRAS.336.1391R ] Monthly Notices of the Royal Astronomical Society 335 2 417–431 2002MNRAS.335..417R 10.1046/j.1365-8711.2002.05635.x free F. Roig D. Nesvorný S. Ferraz-Mello November 2002 Erratum: Asteroids in the 2 : 1 resonance with Jupiter: dynamics and size distribution Monthly Notices of the Royal Astronomical Society 336 4 1391–1392 2002MNRAS.336.1391R 10.1046/j.1365-8711.2002.06105.x free Absolute Magnitude (H) NASA/JPL http://neo.jpl.nasa.gov/glossary/h.html https://web.archive.org/web/20010302182040/http://neo.jpl.nasa.gov/glossary/h.html 2 March 2001 6 April 2016 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 December 2016 14871 26 June 2017 External links (14871) Pyramus at AstDyS, University of Pisa Erratum: Asteroids in the 2 : 1 resonance with Jupiter: dynamics and size distribution 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 14871 (14870) 1990 SM14 14871 14872 Hoher List 014871 014871 Category:Discoveries by Lutz D. Schmadel Category:Discoveries by Freimut Börngen Category:Named minor planets 19901013 Category:Pyramus and Thisbe