1863 Antinous

Stony near-Earth asteroid October 2019 yes 1863 Antinous #FFC2E0 7 March 1948 C. A. Wirtanen Lick Obs. (1863) Antinous æ n ' t ɪ n oʊ ə sAntinous 1948 EA Antinous (Greek mythology) Apollo NEO 4 September 2017 (JD 2458000.5) 0 68.91 yr (25,168 days) 5 March 1948 3.6293 AU 0.8895 AU 2.2594 AU 0.6063 3.40 yr (1,240 days) 139.55° 0.2902 ms / day 18.398° 346.48° 268.00° 0.1836 AU (71.5 LD) 1.80 km (derived) 2.1 km (Gehrels) 3.16 km 3.23 km 4.02 h 4.386 0.004 h 7.453 0.005 h 7.4568 0.0017 hLCDB-Pravec-1999 7.471 0.005 hLCDB-Warner-2016 0.10 0.11 0.08 0.24 (Gehrels) 0.29 (derived) SU (Tholen) Sq (SMASS) L SU 0.763 0.359 15.00 15.14 0.03 (R)LCDB-Pravec-1999 15.5 15.54 15.62 15.639 0.058 15.69 0.14 1863 Antinous æ n ' t ɪ n oʊ ə s, provisional designation 1948 EA, is a stony asteroid and near-Earth object, approximately 2–3 kilometers in diameter. It was discovered on 7 March 1948 by American astronomer Carl Wirtanen at Lick Observatory on the summit of Mount Hamilton, California. It was named after Antinous from Greek mythology. Orbit and classification Antinous is also classified as a Mars-crosser and Apollo asteroid. The SU/Sq-type asteroid orbits the Sun in the inner main-belt at a distance of 0.9–3.6 AU once every 3 years and 5 months (1,240 days). Its orbit has an eccentricity of 0.61 and an inclination of 18° with respect to the ecliptic. It has an Earth minimum orbit intersection distance of 0.1836 AU. In the 20th century Antinous passed within 30 Gm of the Earth five times; it will do so only once in the 21st. The nearest distance increases each time, from 26 to 29 million km.November 2015 Physical characteristics In the Tholen and SMASS taxonomic scheme, Antinous is characterized as a SU and Sq type, respectively, which are subtypes of the broader group of S-type asteroids. The Apollo asteroid has a rotation period of 7.46 hours and an albedo between 0.10 and 0.240, Naming This minor planet was named after Antinous from Greek mythology. Antinous was one of the many unwelcome suitors for Penelope's hand while her husband, Odysseus, was away on his travels (also see 201 Penelope and 1143 Odysseus). Antinous, being the most insolent of all, was the first to be killed by Odysseus on his return. The official 1863 naming citation was published by the Minor Planet Center on 20 February 1976 (M.P.C. 3935). Notes LCDB-Pravec-1999 Pravec (1999) web: rotation period 7.4568 0.0017 hours with a brightness amplitude of 0.23 mag, and quality code: n.a.. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (1863) Antinous LCDB-Warner-2016 Warner (2016) web: rotation period 7.471 0.005 hours with a brightness amplitude of 0.33 mag, and quality code: 3. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (1863) Antinous References 2017-01-30 last obs. JPL Small-Body Database Browser: 1863 Antinous (1948 EA) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001863 Jet Propulsion Laboratory 9 June 2017 Dictionary of Minor Planet Names – (1863) Antinous Schmadel Lutz D. Springer Berlin Heidelberg 149 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1864 (1863) Antinous 1863 Antinous (1948 EA) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1863 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 1863 12 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 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011AJ....141...75H The Astronomical Journal 141 3 10 2011AJ....141...75H 10.1088/0004-6256/141/3/75 12 December 2016 free 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 free 6 C. A. Thomas D. E. Trilling J. P. Emery M. Mueller J. L. Hora L. A. M. Benner B. Bhattacharya W. F. Bottke S. Chesley M. Delbó G. Fazio A. W. Harris A. Mainzer M. Mommert A. Morbidelli B. Penprase H. A. Smith T. B. Spahr J. A. Stansberry 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 Binzel, R. P. October 1987 A photoelectric survey of 130 asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1987Icar...72..135B Icarus 72 1 135–208 0019-1035 1987Icar...72..135B 10.1016/0019-1035(87)90125-4 12 December 2016 A. W. Harris J. W. Young E. Bowell D. J. Tholen November 1999 Asteroid Lightcurve Observations from 1981 to 1983 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1999Icar..142..173H Icarus 142 1 173 1999Icar..142..173H 10.1006/icar.1999.6181 12 December 2016 Warner, Brian D. July 2016 Near-Earth Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2016 January–April The Minor Planet Bulletin 43 3 240–250 32539024 7288611 1052-8091 2016MPBu...43..240W 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 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012Icar..221..365P Icarus 221 1 365–387 2012Icar..221..365P 10.1016/j.icarus.2012.07.026 12 December 2016 B. Carry E. Solano S. Eggl F. E. DeMeo April 2016 Spectral properties of near-Earth and Mars-crossing asteroids using Sloan photometry http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016Icar..268..340C Icarus 268 340–354 2016Icar..268..340C 10.1016/j.icarus.2015.12.047 12 December 2016 1601.02087 119258489 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 1863 1863 Antinous 1862 Apollo 1863 1864 Daedalus 001863 Category:Discoveries by Carl A. Wirtanen Category:Named minor planets 001863 19480307