1931 Čapek

Main-belt asteroid October 2019 yes 1931 Čapek #D6D6D6 L. Kohoutek Bergedorf Obs. 22 August 1969 (1931) Čapek 1969 QB1957 TK1969 PB Karel Čapek(Czech writer) main-belt(middle) 4 September 2017 (JD 2458000.5) 0 59.76 yr (21,826 days) 3.2311 AU 1.8513 AU 2.5412 AU 0.2715 4.05 yr (1,480 days) 297.94° 0.2433 ms / day 8.2623° 182.43° 164.55° 6.628 0.214 km 0.254 0.035 Tholen C 13.0 1931 Čapek, provisional designation 1969 QB, is a background asteroid from the central regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 22 August 1969, by Czech astronomer Luboš Kohoutek at the Bergedorf Observatory in Hamburg, Germany. The asteroid was named in memory of Czech writer Karel Čapek. Orbit and classification Čapek is a background asteroid, not associated to any known asteroid family. It orbits the Sun in the inner part of the central main-belt near the 3:1 resonance with Jupiter at a distance of 1.9–3.2 AU once every 4 years and 1 month (1,480 days). Its orbit has an eccentricity of 0.27 and an inclination of 8° with respect to the ecliptic. The asteroid was first identified as 1957 TK at Goethe Link Observatory in October 1957. The body's observation arc begins at Crimea–Nauchnij, eleven days prior to its official discovery observation at Bergedorf. Physical characteristics Spectral type In the Tholen classification, Čapek is a common carbonaceous C-type asteroid. This strongly disagrees with the albedo obtained by the Wide-field Infrared Survey Explorer (WISE), which indicates that Čapek is a stony S-type asteroid rather than a carbonaceous one. Rotation period As of 2017, no rotational lightcurve of Čapek has been obtained from photometric observations. The asteroid's rotation period, shape and poles remain unknown. Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Čapek measures 6.628 kilometers in diameter and its surface has an albedo of 0.254. Naming This minor planet was named in memory of Karel Čapek (1890–1938), Czech dramatist and novelist, best known for his allegorical plays R.U.R. and Krakatit, in which he anticipated both the destructive potential of nuclear physics and its moral implications. The official naming citation was published by the Minor Planet Center on 27 June 1991 (M.P.C. 18447). References 30em 2017-07-05 last obs. JPL Small-Body Database Browser: 1931 Capek (1969 QB) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001931 Jet Propulsion Laboratory 5 September 2017 Dictionary of Minor Planet Names – (1931) Čapek Schmadel Lutz D. Springer Berlin Heidelberg 155 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1932 (1931) Čapek 1931 Capek (1969 QB) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1931 5 September 2017 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 5 September 2017 6 Joseph R. Masiero A. K. Mainzer T. Grav J. M. Bauer R. M. Cutri C. Nugent M. S. Cabrera November 2012 Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M The Astrophysical Journal Letters 759 1 5 2012ApJ...759L...8M 10.1088/2041-8205/759/1/L8 1209.5794 5 September 2017 1931 5 September 2017 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 (1)-(5000) – Minor Planet Center 1931 1930 Lucifer 1931 1932 Jansky 001931 Category:Discoveries by Luboš Kohoutek Category:Named minor planets 001931 19690822