1855 Korolev

Stony main-belt asteroid October 2019 yes 1855 Korolev #D6D6D6 001855-asteroid shape model (1855) Korolev.png Shape model of Korolev from its lightcurve 8 October 1969 L. Chernykh Crimean Astrophysical Obs. (1855) Korolev 1969 TU 11961 JD1964 DD Sergey Korolyov(Soviet rocket engineer) main-beltFlora 4 September 2017 (JD 2458000.5) 0 55.74 yr (20,358 days) 2.4363 AU 2.0583 AU 2.2473 AU 0.0841 3.37 yr (1,231 days) 286.81° 0.2926 ms / day 3.0793° 191.03° 349.40° 6.789 0.253 km7.47 km (calculated) 4.65 0.01 h4.656199 0.000001 h4.6568 0.0001 hLCDB-Pravec-20084.66 0.01 h 0.24 (assumed)0.319 0.032 S 12.7012.8 1855 Korolev (prov. designation: 1969 TU 1) is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. Discovered in 1969, it was later named after Soviet rocket engineer Sergei Korolev. Discovery Korolev was discovered by Russian astronomer Lyudmila Chernykh at the Crimean Astrophysical Observatory in Nauchnyj on 8 October 1969. On the same night, she also discovered 1856 Růžena. It was first identified as 1961 JD at Goethe Link Observatory in 1961, extending the body's observation arc by 8 years prior to its official discovery observation. Orbit and classification The asteroid orbits the Sun in the inner main-belt at a distance of 2.1–2.4 AU once every 3 years and 4 months (1,231 days). Its orbit has an eccentricity of 0.08 and an inclination of 3° with respect to the ecliptic. Naming This minor planet was named in honor of Sergei Korolev (1907–1966), a designer, integrator, organizer and strategic planner. He was the lead Soviet rocket engineer and spacecraft designer in the Space Race between the United States and the Soviet Union during the 1950s and 1960s until his early death. The lunar and Martian craters Korolev are also named in his honour. The official 1855 naming citation was published by the Minor Planet Center on 1 June 1975 (M.P.C. 3825). Physical characteristics Korolev is characterized as a common stony S-type asteroid. Diameter and albedo According to the surveys carried out by NASA's space-based Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Korolev measures 6.79 kilometers in diameter, and its surface has a high albedo of 0.319, while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the largest member and namesake of its orbital family – and calculates a diameter of 7.47 kilometers with an absolute magnitude of 12.8. Rotation period In March 2008, three rotational lightcurves of Korolev were obtained from photometric observation made by astronomers James W. Brinsfield, Petr Pravec and René Roy, giving a well-defined rotation period of 4.65–4.66 hours with a brightness variation 0.75 and 0.76 magnitude, respectively (U=3/2/3).LCDB-Pravec-2008 Another concurring lightcurve was published in March 2016, using sparse-in-time photometry data from the Lowell Photometric Database (U=n.a.). Notes LCDB-Pravec-2008 Lightcurve plot by Pravec (2008) with rotation period 4.6568 0.0001 hours with a brightness amplitude of 0.75 mag and a quality code of 3. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (1855) Korolev. Unpublished Ondrejov data obtained by the NEO Photometric Program and collaborating projects References 30em 2017-02-04 last obs. JPL Small-Body Database Browser: 1855 Korolev (1969 TU1) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001855 Jet Propulsion Laboratory 8 June 2017 Dictionary of Minor Planet Names – (1855) Korolev Schmadel Lutz D. Springer Berlin Heidelberg 149 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1856 (1855) Korolev 1855 Korolev (1969 TU1) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1855 13 December 2016 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) Appendix – Publication Dates of the MPCs Schmadel Lutz D. Springer Berlin Heidelberg 221 978-3-642-01964-7 10.1007/978-3-642-01965-4 Asteroids and comets rotation curves – (1855) Korolev Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001855 13 December 2016 1 April 2019 https://web.archive.org/web/20190401181659/http://obswww.unige.ch/~behrend/page4cou.html#001855 dead 1855 13 December 2016 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 13 December 2016 Brinsfield, James W. September 2008 Asteroid Lightcurve Analysis at the Via Capote Observatory: First Quarter 2008 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008MPBu...35..119B The Minor Planet Bulletin 35 3 119–122 1052-8091 2008MPBu...35..119B 13 December 2016 J. Durech J. Hanus D. Oszkiewicz R. Vanco March 2016 Asteroid models from the Lowell photometric database http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016A&A...587A..48D Astronomy and Astrophysics 587 6 2016A&A...587A..48D 10.1051/0004-6361/201527573 1601.02909 13 December 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 (1)-(5000) – Minor Planet Center 1855 1854 Skvortsov 1855 1856 Růžena 001855 Category:Discoveries by Lyudmila Chernykh Category:Named minor planets Category:Sergei Korolev 19691008