1868 Thersites

Jupiter trojan asteroid June 2018 yes 1868 Thersites #C2FFFF 24 September 1960 C. J. van HoutenI. van Houten G.T. Gehrels Palomar Obs. (1868) Thersites 2008 P-L1972 RB 2 Thersitian θ ər ˈ s aɪ t iː zNoah Webster (1884) A Practical Dictionary of the English Language Thersites(Greek mythology) Jupiter trojanGreekbackground 23 March 2018 (JD 2458200.5) 0 63.50 yr (23,195 d) 5.9015 AU 4.7316 AU 5.3166 AU 0.1100 12.26 yr (4,478 d) 277.51° 0.0804 ms / day 16.751° 197.82° 169.76° 0.2116 AU 2.9030 68.16 0.81 km70.08 km (calculated)78.89 2.02 km 10.412 0.003 hlcdb-Stephens-201710.416 0.014 h10.48 0.01 hlightcurve-plot-Stephens-2016 0.055 0.0030.055 0.0080.057 (assumed) C (assumed)V–I 0.960 0.034 9.309.59.6 1868 Thersites θ ər ˈ s aɪ t iː z is a large Jupiter trojan from the Greek camp, approximately 70 km mi off 2 us in diameter. Discovered during the Palomar–Leiden survey at Palomar in 1960, it was later named after the warrior Thersites from Greek mythology. The presumed carbonaceous C-type asteroid belongs to the 50 largest Jupiter trojans and has a rotation period of 10.48 hours. Discovery Thersites was discovered on 24 September 1960, by Dutch astronomer couple Ingrid and Cornelis van Houten at Leiden, on photographic plates taken by Tom Gehrels at the Palomar Observatory in California. On the same day, the group discovered another Jupiter trojan, 1869 Philoctetes. The body's observation arc begins with a precovery taken at Palomar in March 1954, more than 6 years prior to its official discovery observation. Palomar–Leiden survey The provisional survey designation "P-L" stands for Palomar–Leiden, named after the Palomar and Leiden observatories, which collaborated on the fruitful Palomar–Leiden survey in the 1960s and 1970s. Gehrels used Palomar's Samuel Oschin telescope, also known as the 48-inch Schmidt Telescope, and shipped the photographic plates to Cornelis and Ingrid van Houten at Leiden Observatory, where astrometry was carried out. The trio are credited with the discovery of several thousand minor planets. Orbit and classification Thersites is a dark Jovian asteroid orbiting in the leading Greek camp at Jupiter's Lagrangian point, 60° ahead of the gas giant's orbit in a 1:1 resonance. It is also a non-family asteroid in the Jovian background population. It orbits the Sun at a distance of 4.7–5.9 au once every 12 years and 3 months (4,478 days; semi-major axis of 5.32 AU). Its orbit has an eccentricity of 0.11 and an inclination of 17° with respect to the ecliptic. Physical characteristics The Trojan asteroid has been assumed to be a carbonaceous C-type asteroid. Rotation period In July 1994, a first rotational lightcurve of Thersites was obtained from photometric observations by Italian astronomer Stefano Mottola using the former Dutch 0.9-metre Telescope at ESO's La Silla Observatory in northern Chile. Lightcurve analysis gave a rotation period of 10.416 0.014 hours with a brightness variation of 0.14 0.01 magnitude (U=2+). The best-rated lightcurve by Robert Stephens at the Center for Solar System Studies from June 2016 gave a period of 10.48 hours and an amplitude of 0.27 magnitude (U=3-).lightcurve-plot-Stephens-2016 Follow-up observation in 2017 gave a similar period of 10.412 hours (U=2).lcdb-Stephens-2017 Diameter and albedo According to the space-based surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Thersites has a low albedo of 0.055 and measures 78.9 and 68.2 kilometers in diameter, respectively. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for a carbonaceous asteroid of 0.057, and calculates an intermediate diameter of 70.08 kilometers with an absolute magnitude of 9.5. Naming This minor planet was named from Greek mythology after Thersites, a Greek warrior who wanted to abandon Troy's siege during the Trojan War and head home. The given name also refers to the fact, that the asteroid was discovered farthest from the yes Lagrangian point. The official 1868 naming citation was published by the Minor Planet Center on 1 June 1975 (M.P.C. 3826). Notes 30em lightcurve-plot-Stephens-2016 Lightcurve plot of (1868) Thersites (July 2016) Rotation period 10.48 0.01 hours with a brightness amplitude of 0.27 0.02 mag. Quality code is 3-. Summary figures for at the LCDB. lcdb-Stephens-2017 Stephens (2017). Observations from July 2017. (lightcurve plot) Rotation period 10.412 0.003 hours with a brightness amplitude of 0.18 0.01 mag. Quality code of 2. Summary figures for (1868) Thersites at the LCDB. References 30em 2017-09-28 last obs. JPL Small-Body Database Browser: 1868 Thersites (2008 P-L) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001868 Jet Propulsion Laboratory 9 June 2018 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 150 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1869 (1868) Thersites 1868 Thersites (2008 P-L) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1868 9 June 2018 Minor Planet Discoverers Minor Planet Center https://www.minorplanetcenter.net/iau/lists/MPDiscsNum.html 31 May 2018 9 June 2018 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) 2009 https://archive.org/details/dictionaryminorp2008schm limited 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 2009dmpn.book.....S List of Jupiter Trojans Minor Planet Center 31 May 2018 https://www.minorplanetcenter.net/iau/lists/JupiterTrojans.html 9 June 2018 T. Grav A. K. Mainzer J. M. Bauer J. R. Masiero C. R. Nugent November 2012 WISE/NEOWISE Observations of the Jovian Trojan Population: Taxonomy The Astrophysical Journal 759 1 10 2012ApJ...759...49G 10.1088/0004-637X/759/1/49 1209.1549 119101711 (online catalog) Asteroid 1868 Thersites Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1868+Thersites 9 June 2018 12 June 2018 https://web.archive.org/web/20180612143924/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1868+Thersites dead Asteroid (1868) Thersites AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?n=1868&pc=1.1.6 20 October 2019 1868 9 June 2018 6 Fumihiko Usui Daisuke Kuroda Thomas G. Müller Sunao Hasegawa Masateru Ishiguro Takafumi Ootsubo Daisuke Ishihara Hirokazu Kataza Satoshi Takita Shinki Oyabu Munetaka Ueno Hideo Matsuhara Takashi Onaka October 2011 Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey Publications of the Astronomical Society of Japan 63 5 1117–1138 2011PASJ...63.1117U 10.1093/pasj/63.5.1117 (online, AcuA catalog p. 153) 6 Stefano Mottola Mario Di Martino Anders Erikson Maria Gonano-Beurer Albino Carbognani Uri Carsenty Gerhard Hahn Hans-Josef Schober Felix Lahulla Marco Delbò Claes-Ingvar Lagerkvist May 2011 Rotational Properties of Jupiter Trojans. I. Light Curves of 80 Objects The Astronomical Journal 141 5 32 2011AJ....141..170M 10.1088/0004-6256/141/5/170 free Robert D. Stephens Daniel R. Coley Brian D. Warner Linda, M. French October 2016 Lightcurves of Jovian Trojan Asteroids from the Center for Solar System Studies: L4 Greek Camp and Spies http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016MPBu...43..323S The Minor Planet Bulletin 43 4 323–331 1052-8091 2016MPBu...43..323S 9 June 2018 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 Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1868 1867 Deiphobus 1868 1869 Philoctetes 001868 Category:Discoveries by Cornelis Johannes van Houten Category:Discoveries by Ingrid van Houten-Groeneveld Category:Discoveries by Tom Gehrels 2008 Category:Named minor planets 19600924