1873 Agenor

Dark Jupiter trojan asteroid June 2018 yes 1873 Agenor #C2FFFF 001873-asteroid shape model (1873) Agenor.png Shape model of Agenor from its lightcurve 25 March 1971 C. J. van HoutenI. van Houten-G.T. Gehrels Palomar Obs. (1873) Agenor 1971 FH Agenorian ə ˈ dʒ iː n ɔːrNoah Webster (1884) A Practical Dictionary of the English Language Agenor (Greek mythology) Jupiter trojanTrojanbackground 23 March 2018 (JD 2458200.5) 0 47.16 yr (17,227 d) 5.7155 AU 4.7470 AU 5.2313 AU 0.0926 11.97 yr (4,370 d) 320.34° 0.0824 ms / day 21.880° 197.92° 357.28° 0.705 AU 2.8480 50.80 1.18 km53.76 4.4 km54.38 1.62 km 20.60 0.03 h 0.038 0.0030.0386 0.0070.062 0.007 C (assumed) 10.110.210.50 1873 Agenor ə ˈ dʒ iː n ɔːr (prov. designation: 1971 FH) is a dark Jupiter trojan asteroid from the Trojan camp, approximately 53 km mi off 2 us in diameter. It was discovered during the Palomar–Leiden Trojan survey in 1971, and later named after Agenor from Greek mythology. The dark Jovian asteroid belongs to the 100 largest Jupiter trojans and has a rotation period of 20.60 hours. Discovery Agenor was discovered on 25 March 1971, by Dutch astronomer couple Ingrid and Cornelis van Houten at Leiden, on photographic plates taken by Dutch–American astronomer Tom Gehrels at Palomar Observatory in the Palomar Mountain Range, southeast of Los Angeles. Palomar–Leiden survey The discovery was made in a survey of faint Trojans, one night after the discovery of 1870 Glaukos. The trio of Dutch and Dutch–American astronomers also collaborated on the productive Palomar–Leiden survey in the 1960s, using the same procedure as for this (smaller) survey: Tom 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. Orbit and classification Agenor is a dark Jovian asteroid in a 1:1 orbital resonance with Jupiter. It is located in the trailing Trojan camp at the Gas Giant's Lagrangian point, 60° behind its orbit (see Trojans in astronomy). It is also a non-family asteroid of the Jovian background population. It orbits the Sun at a distance of 4.7–5.7 AU once every 11 years and 12 months (4,370 days; semi-major axis of 5.23 AU). Its orbit has an eccentricity of 0.09 and an inclination of 22° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Palomar in March 1971. Physical characteristics Agenor is assumed to be a carbonaceous C-type asteroid. Rotation period In February 1994, photometric observations with the ESO 1-metre telescope by astronomer Stefano Mottola and Anders Erikson at La Silla Observatory in Chile, were used to build a rotational lightcurve showing a rotation period of 20.60 0.03 hours with a brightness variation of 0.08 0.01 in magnitude (U=2). Diameter and albedo According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Agenor measures between 50.80 and 54.38 kilometers in diameter and its surface has an albedo between 0.038 and 0.062. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0506 and a diameter of 53.89 kilometers based on an absolute magnitude of 10.2. Naming This minor planet was named for Agenor, who was able to inflict a wound on the Greek warrior Achilles. The Olympian deity Apollo assumed Agenor's form to distract Achilles while the Trojans forces were retreating. The minor planets 588 Achilles and 1862 Apollo are named after these two figures from Greek mythology. The body's name was suggested by Brian G. Marsden, the then director of the MPC. The official 1873 naming citation was published by the Minor Planet Center on 1 June 1975 (M.P.C. 3826). References 30em 2018-05-24 last obs. JPL Small-Body Database Browser: 1873 Agenor (1971 FH) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001873 Jet Propulsion Laboratory 19 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_1874 (1873) Agenor 1873 Agenor (1971 FH) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1873 19 June 2018 List of Jupiter Trojans Minor Planet Center V. Carruba 1 June 2018 https://www.minorplanetcenter.net/iau/lists/JupiterTrojans.html 19 June 2018 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) Appendix – Publication Dates of the MPCs Schmadel Lutz D. 2009 Springer Berlin Heidelberg 221 978-3-642-01964-7 10.1007/978-3-642-01965-4 2009dmpn.book.....S https://cds.cern.ch/record/1339661 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 https://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759...49G The Astrophysical Journal 759 1 10 2012ApJ...759...49G 10.1088/0004-637X/759/1/49 1209.1549 119101711 19 June 2018 (online catalog) E. F. Tedesco P. V. Noah M. Noah S. D. Price October 2004 IRAS Minor Planet Survey V6.0 https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab NASA Planetary Data System – IRAS-A-FPA-3-RDR-IMPS-V6.0 12 IRAS-A-FPA-3-RDR-IMPS-V6.0 2004PDSS...12.....T 19 June 2018 Asteroid (1873) Agenor – Proper Elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?n=1873&pc=1.1.6 20 October 2019 1873 19 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 free (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 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 Asteroid 1873 AgenorJune 2026 InternetArchiveBot at the Small Bodies Data Ferret 1873 1872 Helenos 1873 1874 Kacivelia 001873 Category:Discoveries by Cornelis Johannes van Houten Category:Discoveries by Ingrid van Houten-Groeneveld Category:Discoveries by Tom Gehrels Category:Named minor planets 19710325