1869 Philoctetes

Jupiter trojan asteroid October 2019 yes 1869 Philoctetes #C2FFFF 24 September 1960 C. J. van HoutenI. van Houten-G.T. Gehrels Palomar Obs. (1869) Philoctetes 4596 P-L f ɪ l ə k ˈ t iː t iː zNoah Webster (1884) A Practical Dictionary of the English Language Philoctetes(Greek mythology) Jupiter trojan(Greek camp) 4 September 2017 (JD 2458000.5) 0 56.61 yr (20,677 days) 5.5755 AU 4.8600 AU 5.2178 AU 0.0686 11.92 yr (4,353 days) 247.19° 3.9745° 43.984° 321.66° 0.0807 AU 2.9900 22.655 3.404 km 0.104 0.031 11.2 1869 Philoctetes f ɪ l ə k ˈ t iː t iː z is a Jupiter trojan from the Greek camp, approximately 23 kilometers in diameter. It was discovered on September 24, 1960, by the Dutch and Dutch–American astronomers Cornelis van Houten, Ingrid van Houten-Groeneveld and Tom Gehrels at Palomar Observatory on Palomar Mountain, California. The asteroid was named after Philoctetes from Greek mythology. On the same night, the same group also discovered 1868 Thersites. Orbit and classification Philoctetes orbits in the Lagrangian point of the Sun–Jupiter system, in the "Greek Camp" of Trojan asteroids. It orbits the Sun at a distance of 4.9–5.6 AU once every 11 years and 11 months (4,353 days). Its orbit has an eccentricity of 0.07 and an inclination of 4° with respect to the ecliptic. Physical characteristics According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Philoctetes measures 22.7 kilometers in diameter, and its surface has an albedo of 0.104. As of 2017, the body's rotation period and shape remain unknown. Survey designation The survey designation P-L stands for Palomar–Leiden, named after Palomar Observatory and Leiden Observatory, which collaborated on the fruitful Palomar–Leiden survey in the 1960s. Gehrels used Palomar's Samuel Oschin telescope (also known as the 48-inch Schmidt Telescope), and shipped the photographic plates to Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld at Leiden Observatory. The trio are credited with several thousand asteroid discoveries. Naming This minor planet was named after the Greek mythological figure Philoctetes, famed archer and participant in the Trojan War, where he killed Paris, son of the Trojan King Priam. The official 1869 naming citation was published by the Minor Planet Center on 1 June 1975 (M.P.C. 3826). References 30em 2017-05-05 last obs. JPL Small-Body Database Browser: 1869 Philoctetes (4596 P-L) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001869 Jet Propulsion Laboratory 9 June 2017 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_1870 (1869) Philoctetes 1869 Philoctetes (4596 P-L) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1869 12 December 2016 List of Jupiter Trojans Minor Planet Center 20 August 2016 https://www.minorplanetcenter.net/iau/lists/JupiterTrojans.html 12 December 2016 Minor Planet Discoverers Minor Planet Center https://www.minorplanetcenter.net/iau/lists/MPDiscsNum.html 24 April 2016 12 December 2016 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 12 December 2016 1869 9 June 2017 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/20241208174218/http://obswww.unige.ch/~behrend/page_cou.html 8 December 2024 – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1869 1868 Thersites 1869 1870 Glaukos 001869 Category:Discoveries by Cornelis Johannes van Houten Category:Discoveries by Ingrid van Houten-Groeneveld Category:Discoveries by Tom Gehrels 4596 Category:Named minor planets 19600924