1943 Anteros

Rare-type, spheroidal Amor asteroid September 2020 yes 1943 Anteros #FFC2E0 13 March 1973 J. B. Gibson El Leoncito Complex (1943) Anteros 1973 EC ˈ æ n t ə r ɒ sAnteros Anteros (Greek mythology) AmorNEO 4 September 2017 (JD 2458000.5) 0 44.02 yr (16,080 days) 1.7968 AU 1.0642 AU 1.4305 AU 0.2561 1.71 yr (625 days) 332.17° 8.7061° 246.33° 338.37° 0.0630 AU24.5 LD 2.01 km (derived)2.38 0.72 km2.39 km2.43 km 2.735 0.003 h2.867 0.001 h2.8695 h2.9 0.1 h3 h6.5209 0.0022 h 0.138 0.1070.150.170.18 (assumed) S (Tholen)L (SMASS)SqSLB–V = 0.841U–B = 0.444 15.0015.449 0.002 (R)15.7515.815.82 0.1415.89 0.1415.9 0.215.9616.0116.35 0.48 1943 Anteros ˈ æ n t ə r ɒ s, provisional designation 1973 EC, is a spheroidal, rare-type asteroid and near-Earth object of the Amor group, approximately 2 kilometers in diameter. It was discovered on 13 March 1973, by American astronomer James Gibson at the Leoncito Astronomical Complex in Argentina, and named for the Greek god Anteros. Orbit and classification Anteros is an Amor asteroid, which approaches the orbit of Earth from beyond but does not cross it. It orbits the Sun at a distance of 1.1–1.8 AU once every 1 year and 9 months (625 days). Its orbit has an eccentricity of 0.26 and an inclination of 9° with respect to the ecliptic. The near-Earth object has an Earth minimum orbit intersection distance of 0.0630 AU km on on 3 or 24.5 lunar distances, which is slightly above the defined limit of 0.05 AU for potentially hazardous objects. The body's observation arc begins 3 days prior to its official discovery observation in 1973, as a 1968-precovery from Palomar remained unused. Physical characteristics In the Tholen classification, Anteros is a common S-type asteroid, while in the SMASS taxonomy, it is a relatively rare L-type asteroid, described as a reddish but otherwise featureless stony asteroid. It has also been characterized as a Sq subtype, which transitions to the Q-type asteroids. Rotation period Several rotational lightcurves of Anteros were obtained from photometric observations by Brian Warner, Petr Pravec, the Palomar Transient Factory and others since the 1980s. One of the best-rated and most recent lightcurves was obtained at the Palmer Divide Station (716) in December 2013, and gave a rotation period of 2.867 hours with a brightness variation of 0.1 magnitude, which indicates that Anteros has a nearly spheroidal shape (U=3). Diameter and albedo According to the EXPLORENEOs survey carried out by the Spitzer Space Telescope, Anteros measures between 2.38 and 2.43 kilometers in diameter, and its surface has an albedo of 0.138 to 0.170. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.18 and derives a diameter of 2.0 kilometers with an absolute magnitude of 15.89. Naming This minor planet was named after the Greek god Anteros, avenger of unrequited love and punisher of those who scorn love and the advances of others. The asteroid's name may have been chosen because its orbit is similar to the asteroid 433 Eros, and in Greek mythology, Anteros was said to be the twin brother of Eros. The official 1943 naming citation was published by the Minor Planet Center on 15 October 1977 (M.P.C. 4237). References 30em 2017-03-19 last obs. JPL Small-Body Database Browser: 1943 Anteros (1973 EC) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001943 Jet Propulsion Laboratory 10 June 2017 Dictionary of Minor Planet Names – (1943) Anteros Schmadel Lutz D. Springer Berlin Heidelberg 156 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1944 (1943) Anteros 1943 Anteros (1973 EC) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1943 9 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 1943 9 December 2016 6 A. W. Harris M. Mommert J. L. Hora M. Mueller D. E. Trilling B. Bhattacharya W. F. Bottke S. Chesley M. Delbo J. P. Emery G. Fazio A. Mainzer B. Penprase H. A. Smith T. B. Spahr J. A. Stansberry C. A. Thomas March 2011 ExploreNEOs. II. The Accuracy of the Warm Spitzer Near-Earth Object Survey The Astronomical Journal 141 3 10 2011AJ....141...75H 10.1088/0004-6256/141/3/75 14208889 https://authors.library.caltech.edu/22857/1/Harris2011p13012Astron_J.pdf 6 Michael Mueller M. Delbo' J. L. Hora D. E. Trilling B. Bhattacharya W. F. Bottke S. Chesley J. P. Emery G. Fazio A. W. Harris A. Mainzer M. Mommert B. Penprase H. A. Smith T. B. Spahr J. A. Stansberry C. A. Thomas April 2011 ExploreNEOs. III. Physical Characterization of 65 Potential Spacecraft Target Asteroids The Astronomical Journal 141 4 9 2011AJ....141..109M 10.1088/0004-6256/141/4/109 44827674 https://authors.library.caltech.edu/23152/1/Mueller2011p13239Astron_J.pdf 6 D. E. Trilling M. Mueller J. L. Hora A. W. Harris B. Bhattacharya W. F. Bottke S. Chesley M. Delbo J. P. Emery G. Fazio A. Mainzer B. Penprase H. A. Smith T. B. Spahr J. A. Stansberry C. A. Thomas September 2010 ExploreNEOs. I. Description and First Results from the Warm Spitzer Near-Earth Object Survey The Astronomical Journal 140 3 770–784 2010AJ....140..770T 10.1088/0004-6256/140/3/770 3006566 https://authors.library.caltech.edu/19716/1/Trilling2010p11217Astron_J.pdf S. J. Weidenschilling C. R. Chapman D. R. Davis R. Greenberg D. 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McMillan March 1995 Photoelectric Observations of 125 Asteroids Abstracts of the Lunar and Planetary Science Conference 26 1511 1995LPI....26.1511W Petr Pravec Alan W. Harris Peter Kusnirák Adrián Galád Kamil Hornoch September 2012 Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations Icarus 221 1 365–387 2012Icar..221..365P 10.1016/j.icarus.2012.07.026 6 Peter Veres Robert Jedicke Alan Fitzsimmons Larry Denneau Mikael Granvik Bryce Bolin Serge Chastel Richard J. Wainscoat William S. Burgett Kenneth C. Chambers Heather Flewelling Nick Kaiser Eugen A. Magnier Jeff S. Morgan Paul A. Price John L. Tonry Christopher Waters November 2015 Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results Icarus 261 34–47 2015Icar..261...34V 10.1016/j.icarus.2015.08.007 1506.00762 53493339 B. Carry E. Solano S. Eggl F. E. DeMeo April 2016 Spectral properties of near-Earth and Mars-crossing asteroids using Sloan photometry Icarus 268 340–354 2016Icar..268..340C 10.1016/j.icarus.2015.12.047 1601.02087 119258489 6 Thomas, C. A. Trilling, D. E. Emery, J. P. Mueller, M. Hora, J. L. Benner, L. A. M. Bhattacharya, B. Bottke, W. F. Chesley, S. Delbó, M. Fazio, G. Harris, A. W. Mainzer, A. Mommert, M. Morbidelli, A. Penprase, B. Smith, H. A. Spahr, T. B. Stansberry, J. A. September 2011 ExploreNEOs. V. Average Albedo by Taxonomic Complex in the Near-Earth Asteroid Population The Astronomical Journal 142 3 12 2011AJ....142...85T 10.1088/0004-6256/142/3/85 free Cristina A. Thomas Joshua P. Emery David E. Trilling Marco Delbó Joseph L. Hora Michael Mueller January 2014 Physical characterization of Warm Spitzer-observed near-Earth objects Icarus 228 217–246 2014Icar..228..217T 10.1016/j.icarus.2013.10.004 1310.2000 119278697 External links 1G5q0gf0IZQtitle=1943 Anteros (1973 EC) Observation images by S. Tilley from Auburry, CA, USA (duration 0:46) Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20110721225144/http://www.minorplanet.info/lightcurvedatabase.html 21 July 2011 ) 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 1943 1943 Anteros 1942 Jablunka 1943 1944 Günter 001943 Category:Discoveries by James B. Gibson (astronomer) Category:Named minor planets 001943 001943 19730313