11252 Laërtes

Asteroid, L4 Jupiter trojan June 2018 yes 11252 Laërtes #C2FFFF C. J. van HoutenI. van Houten-G.T. Gehrels Palomar Obs. 19 September 1973 (11252) Laërtes l eɪ ˈ ɜːr t iː z lay UR teez 1973 SA 21977 AY 2 Laërtes (Greek mythology) Jupiter trojanGreekbackground 23 March 2018 (JD 2458200.5) 0 65.65 yr (23,980 d) 5.2970 AU 4.9880 AU 5.1425 AU 0.0300 11.66 yr (4,260 d) 239.18° 0.0845 ms / day 5.8579° 78.321° 325.18° 0.0487 AU 2.9890 41.09 5.97 km 9.15 0.03 hlightcurve-plots-CS3 0.060 0.030 C (assumed) 10.6 11252 Laërtes (l eɪ ˈ ɜːr t iː z lay UR teez; provisional designation 1973 SA 2) is a mid-sized Jupiter trojan from the Greek camp, approximately 41 km mi off 2 us in diameter. It was discovered during a follow-up campaign of the Palomar–Leiden survey in 1973, and named after the King Laërtes from Greek mythology. The dark Jovian asteroid has a rotation period of 9.2 hours. Discovery It was discovered on 19 September 1973, by Dutch astronomer couple Ingrid and Cornelis van Houten on photographic plates taken by Dutch–American astronomer Tom Gehrels at the Palomar Observatory in California. The first precovery was taken at the discovering observatory in 1951, extending the asteroid's observation arc by 22 years prior to its discovery. As an anomaly, the asteroid did not receive a typical survey designation, although it was discovered in 1973, when the discovering trio of astronomers were conducting their second Palomar–Leiden Trojan survey (T-2). Orbit and classification Laërtes is a dark Jovian asteroid in a 1:1 orbital resonance with Jupiter. It is located in the leading Greek camp at the Gas Giant's Lagrangian point, 60° ahead on 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 5.0–5.3 AU once every 11 years and 8 months (4,260 days; semi-major axis of 5.14 AU). Its orbit has an eccentricity of 0.03 and an inclination of 6° with respect to the ecliptic. Physical characteristics Laërtes is an assumed C-type asteroid, while the dominant type among the Jovian asteroid population is that of a D-type. Rotation period In March 2015, a rotational lightcurve of Laërtes was obtained by Robert Stephens at the Center for Solar System Studies in California. The photometric observations showed a rotation period of 9.15 0.03 hours with a brightness variation of 0.18 magnitude (U=2).lightcurve-plots-CS3 Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, the asteroid measures 41.09 kilometers in diameter, and its surface has an albedo of 0.060, while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous bodies of 0.057 and calculates a diameter of 42.23 kilometers with an absolute magnitude of 10.6. Naming This minor planet was named for Laërtes, the king of Ithaca, Argonaut, husband of Anticleia, and father of Odysseus. The father of Laërtes was Arcisius, a son of the sky and thunder god and ruler of Mount Olympus, Zeus. The minor planets 651 Antikleia, 1143 Odysseus, 1151 Ithaka, 5731 Zeus were all named after these figures and places from Greek mythology. The approved naming citation was published by the Minor Planet Center on 24 January 2000 (M.P.C. 38200). Notes lightcurve-plots-CS3 Lightcurve plots of (11252) Laërtes from March 2015 by Robert Stephens at the Center for Solar System Studies U81. Quality code is 2+ (lightcurve rating at CS3). Summary figures at the LCDB and CS3. References 30em 2017-07-04 last obs. JPL Small-Body Database Browser: 11252 Laertes (1973 SA2) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011252 https://web.archive.org/web/20200819143638/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011252 dead 19 August 2020 Jet Propulsion Laboratory 22 June 2018 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 757 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_8276 (11252) Laërtes 11252 Laertes (1973 SA2) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=11252 22 June 2018 List of Jupiter Trojans Minor Planet Center V. Carruba 1 June 2018 https://www.minorplanetcenter.net/iau/lists/JupiterTrojans.html 22 June 2018 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 22 June 2018 Asteroid (11252) Laërtes – Proper Elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?n=11252&pc=1.1.6 22 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 http://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 22 June 2018 (online catalog) 11252 22 June 2018 Robert D. Stephens Daniel, R. Coley Linda M. French January 2016 Large L5 Jovian Trojan Asteroid Lightcurves from the Center for Solar System Studies http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016MPBu...43...15S The Minor Planet Bulletin 43 1 15–22 1052-8091 2016MPBu...43...15S 22 June 2018 External links Robert Stephens, Center for Solar System Studies (CS3) 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 (10001)-(15000) – Minor Planet Center Asteroid 11252 Laertes https://web.archive.org/web/20180622165140/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=11252%20Laertes 22 June 2018 at the Small Bodies Data Ferret 11252 11251 Icarion 11252 11253 Mesyats 011252 Category:Discoveries by Cornelis Johannes van Houten Category:Discoveries by Ingrid van Houten-Groeneveld Category:Discoveries by Tom Gehrels Category:Named minor planets 19730919