1675 Simonida

Main-belt asteroid October 2019 yes 1675 Simonida #D6D6D6 20 March 1938 M. B. Protić Belgrade Obs. (1675) Simonida 1938 FB1931 AZ1936 SG1941 BD1943 VJ1951 CL 11953 VD1958 FE1958 GX Simonida (Queen) main-beltFlora 4 September 2017 (JD 2458000.5) 0 86.04 yr (31,427 days) 2.5114 AU 1.9550 AU 2.2332 AU 0.1246 3.34 yr (1,219 days) 18.859° 0.2953 ms / day 6.7964° 30.145° 50.114° 11.08 0.5 km (IRAS:8)12.16 0.52 km 5.16 0.04 h5.2885 0.0005 h5.3 0.2 h 0.211 0.0190.2480 0.025 (IRAS:8)0.2501 (SIMPS) S 11.811.911.9 0.0611.91 1675 Simonida, provisional designation 1938 FB, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 11 kilometers in diameter. Discovered by Milorad Protić in 1938, it was later named after the medieval Byzantine princess Simonida. Discovery Simonida was discovered on 20 March 1938, by Serbian astronomer Milorad Protić at Belgrade Astronomical Observatory. On the same night, it was independently discovered by Belgian astronomer Fernand Rigaux at Uccle Observatory in Belgium. Classification and orbit The S-type asteroid is a member of the Flora family, a large population of stony asteroids in the main-belt. It orbits the Sun at a distance of 2.0–2.5 AU once every 3 years and 4 months (1,219 days). Its orbit has an eccentricity of 0.12 and an inclination of 7° with respect to the ecliptic. Simonida's first observation was a precovery taken at Lowell Observatory in 1931, extending the body's observation arc by 7 years prior to its official discovery observation. Physical characteristics Lightcurves In March 1988, Polish astronomer Wiesław Z. Wiśniewski obtained a lightcurve of Simonida that gave a rotation period of 5.3 hours with a brightness variation of 0.26 magnitude (U=2). In January 2004, astronomer A. Kryszczynska at Poznań Observatory measured a period of 5.2885 hours with an amplitude of 0.50 magnitude (U=2+). In January 2008, photometric observations by astronomers Martine Castets, Bernard Trégon, Arnaud Leroy and Raoul Behrend gave a rotation period of 5.16 hours with a brightness variation of 0.21 (U=3-). Diameter and albedo According to the space-based Japanese Akari satellite, Simonida measures 12.16 kilometers in diameter, and its surface has an albedo of 0.211. The Collaborative Asteroid Lightcurve Link, however, agrees with the results obtained by 8 observations of the Infrared Astronomical Satellite IRAS, that gave a diameter of 11.08 kilometers and an albedo of 0.25 with an absolute magnitude of 11.9. Naming This minor planet was named for Byzantine princess and queen consort Simonida, the wife of medieval Serbian king Stefan Milutin and symbol of beauty in former Yugoslavia. The official 1675 naming citation was published by the Minor Planet Center on 1 January 1973 (M.P.C. 3359). References 30em 2017-01-27 last obs. JPL Small-Body Database Browser: 1675 Simonida (1938 FB) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001675 Jet Propulsion Laboratory 6 June 2017 Dictionary of Minor Planet Names – (1675) Simonida Schmadel Lutz D. Springer Berlin Heidelberg 133 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1676 (1675) Simonida 1675 Simonida (1938 FB) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1675 23 December 2016 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) 2009 https://archive.org/details/dictionaryminorp2008schm limited Appendix – Publication Dates of the MPCs Schmadel Lutz D. Springer Berlin Heidelberg 221 978-3-642-01964-7 10.1007/978-3-642-01965-4 Asteroids and comets rotation curves – (1675) Simonida Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001675 23 December 2016 1 April 2019 https://web.archive.org/web/20190401181659/http://obswww.unige.ch/~behrend/page4cou.html#001675 dead 1675 23 December 2016 E. F. Tedesco P. V. Noah M. Noah S. D. Price October 2004 IRAS Minor Planet Survey V6.0 https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab NASA Planetary Data System – IRAS-A-FPA-3-RDR-IMPS-V6.0 2004PDSS...12.....T 17 October 2019 6 Fumihiko Usui Daisuke Kuroda Thomas G. Müller Sunao Hasegawa Masateru Ishiguro Takafumi Ootsubo Daisuke Ishihara Hirokazu Kataza Satoshi Takita Shinki Oyabu Munetaka Ueno Hideo Matsuhara Takashi Onaka October 2011 Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey Publications of the Astronomical Society of Japan 63 5 1117–1138 2011PASJ...63.1117U 10.1093/pasj/63.5.1117 (online, AcuA catalog p. 153) W. Z. Wisniewski T. M. Michalowski A. W. Harris R. S. McMillan March 1995 Photoelectric Observations of 125 Asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1995LPI....26.1511W Abstracts of the Lunar and Planetary Science Conference 26 1511 1995LPI....26.1511W 23 December 2016 6 A. Kryszczynska F. Colas M. Polinska R. Hirsch V. Ivanova G. Apostolovska B. Bilkina F. P. Velichko T. Kwiatkowski P. Kankiewicz F. Vachier V. Umlenski T. Michalowski A. Marciniak A. Maury K. Kaminski M. Fagas W. Dimitrov W. Borczyk K. Sobkowiak J. Lecacheux R. Behrend A. Klotz L. Bernasconi R. Crippa F. Manzini R. Poncy P. Antonini D. Oszkiewicz T. Santana-Ros October 2012 Do Slivan states exist in the Flora family?. I. Photometric survey of the Flora region http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012A&A...546A..72K Astronomy and Astrophysics 546 51 2012A&A...546A..72K 10.1051/0004-6361/201219199 23 December 2016 free 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 23 December 2016 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 1675 1674 Groeneveld 1675 1676 Kariba 001675 Category:Discoveries by Milorad B. Protić Category:Named minor planets 19380320