1916 Boreas

Stony near-Earth asteroid September 2020 yes 1916 Boreas #FFC2E0 1 September 1953 S. Arend Uccle Obs. (1916) Boreas 1953 RA ˈ b oʊr i ə sBoreas Boreas (Greek mythology) NEOAmor 4 September 2017 (JD 2458000.5) 0 63.73 yr (23,279 days) 3.2944 AU 1.2506 AU 2.2725 AU 0.4497 3.43 yr (1,251 days) 252.13° 0.2877 ms / day 12.884° 340.64° 335.83° 0.2520 AU98.2 LD 3.07 km (calculated)3.5 km 3.4741 0.0003 hlcdb3.4746 h3.4746 0.0010 hlcdb3.4748 0.0010 hlcdb3.49 0.01 h 0.15 (assumed)0.20 (assumed) S (Tholen), S (SMASS)SSwB–V = 0.852U–B = 0.407 14.86 0.11214.93 1916 Boreas, provisional designation 1953 RA, is an eccentric, stony asteroid and near-Earth object of the Amor group, approximately 3 kilometers in diameter. After its discovery in 1953, it became a lost asteroid until 1974. It was named after Boreas from Greek mythology. Discovery Boreas was discovered on 1 September 1953, by Belgian astronomer Sylvain Arend at the Royal Observatory of Belgium in Uccle. The asteroid was observed for 2 months and then with time became a lost asteroid. It was recovered in 1974, by Richard Eugene McCrosky, G. Schwartz and JH Bulger based on a predicted position by Brian G. Marsden.IAUC Orbit and classification Boreas orbits the Sun at a distance of 1.3–3.3 AU once every 3 years and 5 months (1,251 days). Its orbit has an eccentricity of 0.45 and an inclination of 13° with respect to the ecliptic. The near-Earth asteroid has an Earth minimum orbit intersection distance of 0.2520 AU km on 3 , which corresponds to 98.2 lunar distances. Its observation arc begins with it official discovery observation at Uccle in 1953. Physical characteristics On the Tholen and SMASS taxonomic scheme, Boreas is classified as a common S-type asteroid with a stony composition. It has also been characterized as a Sw-subtype. Several rotational lightcurves gave a rotation period between 3.4741 and 3.49 hours with a brightness variation between 0.25 and 0.35 magnitude (U=2/2/3/n.a.).lcdb In 1994, astronomer Tom Gehrels estimated Boreas to measure 3.5 kilometers in diameter, based on an assumed albedo of 0.15. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 3.07 kilometers with an absolute magnitude of 14.93. Naming This minor planet is named after the Greek god of the north wind, Boreas, as the asteroid was discovered moving rapidly northward after passing the ascending node of its orbit. The official naming citation was published by the Minor Planet Center on 8 April 1982 (M.P.C. 6833). Notes lcdb Pravec (2001) web: rotation period 3.4748 0.0010 hours with a brightness amplitude of 0.28 mag. Behrend (2001) web: rotation period 3.4741 0.0003 hours with a brightness amplitude of 0.29 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (1916) Boreas IAUC Central Bureau for Astronomical Telegrams – 1953 RA This member of the Amor group, not observed since 1953 (cf. Minor Planet Circ. No. 3015), has been recovered by McCrosky, Schwartz and Bulger with the 155-cm reflector some 0o.3 from an unpublished prediction by B. G. Marsden International Astronomical Union Circular 2710 for (1953 RA) References 30em 2017-05-27 last obs. JPL Small-Body Database Browser: 1916 Boreas (1953 RA) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001916 Jet Propulsion Laboratory 9 June 2017 Dictionary of Minor Planet Names – (1916) Boreas Schmadel Lutz D. Springer Berlin Heidelberg 154 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1917 (1916) Boreas 1916 Boreas (1953 RA) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1916 10 December 2016 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 10 December 2016 International Astronomical Union Circular 2710 Brian G. Marsden October 24, 1974 Central Bureau for Astronomical Telegrams http://www.cbat.eps.harvard.edu/iauc/02700/02710.html 2011-07-05 Asteroids and comets rotation curves – (1916) Boreas Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001916 18 May 2016 3 August 2003 https://web.archive.org/web/20030803183423/http://obswww.unige.ch/~behrend/page4cou.html#001916 dead 1916 10 December 2016 Robinson, L. E. June 2002 Lightcurve Photometry of 551 Ortrud, 1118 Hanskya, and 1916 Boreas from Sunflower Observatory http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2002MPBu...29...37R The Minor Planet Bulletin 29 37–38 2002MPBu...29...37R 10 December 2016 Yu. N. Krugly I. N. Belskaya V. G. Chiorny V. G. Shevchenko N. M. Gaftonyuk November 2002 CCD photometry of near-Earth asteroids in 2001 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2002ESASP.500..903K In: Proceedings of Asteroids 500 903–906 2002ESASP.500..903K 10 December 2016 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 10 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 10 December 2016 1601.02087 119258489 C. L. Dandy A. Fitzsimmons S. J. Collander-Brown June 2003 Optical colors of 56 near-Earth objects: trends with size and orbit http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2003Icar..163..363D Icarus 163 2 363–373 2003Icar..163..363D 10.1016/S0019-1035(03)00087-3 10 December 2016 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 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014Icar..228..217T Icarus 228 217–246 2014Icar..228..217T 10.1016/j.icarus.2013.10.004 1310.2000 2060/20140012047 119278697 10 December 2016 External links 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 1916 1916 Boreas 1915 Quetzálcoatl 1916 1917 Cuyo 001916 Category:Discoveries by Sylvain Arend Category:Named minor planets 001916 001916 19530901 01916