1004 Belopolskya

Main-belt asteroid October 2019 yes 1004 Belopolskya #D6D6D6 5 September 1923 S. Belyavskyj Simeiz Obs. (1004) Belopolskya 1923 OS1936 WB1937 YB1938 AA1963 DC1974 WK2004 SU 12A917 TA Aristarkh Belopolsky(astrophysicist) main-belt(outer)Cybele 16 February 2017 (JD 2457800.5) 0 92.89 yr (33,928 days) 3.6994 AU 3.1054 AU 3.4024 AU 0.0873 6.28 yr (2,292 days) 322.58° 0.1570 ms / day 2.9787° 153.54° 215.17° 71.60 2.1 km (IRAS:9)79.83 1.33 km 9.44 0.01 h 0.028 0.0010.0348 0.002 (IRAS:9) B–V = 0.720U–B = 0.120Tholen = PCPC 9.9910.02 0.29 Belopolskya (minor planet designation: 1004 Belopolskya), provisional designation 1923 OS, is a dark Cybele asteroid from the outermost region of the asteroid belt, approximately 75 km 0 us in diameter. It was named for Russian astrophysicist Aristarkh Belopolsky. Discovery Belopolskya was discovered on 5 September 1923, by Russian astronomer Sergey Belyavsky at Simeiz Observatory on the Crimean peninsula. Eight nights later, the body was independently discovered by Karl Reinmuth at Heidelberg in Germany. It was first identified as A917 TA at Simeiz in 1917. The body's observation arc begins with the above-mentioned Heidelberg-observation following its official discovery. Classification and orbit Belopolskya orbits the Sun at a distance of 3.1–3.7 AU once every 6 years and 3 months (2,292 days). Its orbit has an eccentricity of 0.09 and an inclination of 3° with respect to the ecliptic. With these orbital parameters, it belongs to the Cybele asteroids, a dynamical group named after one of the largest asteroids, 65 Cybele. Physical characteristics Belopolskya is classified as a PF-type asteroid in the Tholen taxonomy, a subtype of the dark and reddish P-type asteroids. A few dozens of these bodies are known, most of them are Jupiter trojans or reside in the outermost main-belt. Diameter and albedo According to the surveys carried out by the Infrared Astronomical Satellite IRAS and the Japanese Akari satellite, Belopolskya measures 71.60 and 79.83 kilometers in diameter, and its surface has an albedo of 0.0348 and 0.028, respectively. The Collaborative Asteroid Lightcurve Link adopts the shorter diameter obtained by IRAS. Rotation period A rotational lightcurve of Belopolskya, obtained by Italian amateur astronomer Silvano Casulli in July 2010, gave a rotation period of 9.44 hours with a brightness variation of 0.14 magnitude (U=2). No other lightcurves have been obtained. Naming This minor planet was named in honor of Aristarkh Belopolsky (1854–1934), astrophysicist at Pulkovo Observatory, the principal astronomical observatory of the Russian Academy of Sciences, which is located south of Saint Petersburg in Russia. Belopolsky is also honored by the lunar crater Belopol'skiy. Naming citation was first mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 96). References 30em 2016-08-03 last obs. JPL Small-Body Database Browser: 1004 Belopolskya (1923 OS) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001004 Jet Propulsion Laboratory 31 January 2017 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 87 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1005 (1004) Belopolskya 1004 Belopolskya (1923 OS) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1004 31 January 2017 Asteroids and comets rotation curves – (1004) Belopolskya Behrend Raoul Geneva Observatory https://obswww.unige.ch/~behrend/page3cou.html#001004 31 January 2017 https://web.archive.org/web/20200123022615/https://obswww.unige.ch/~behrend/page3cou.html#001004 23 January 2020 dead JPL Small-Body Database Search Engine: spec. type = P (Tholen) JPL Solar System Dynamics http://ssd.jpl.nasa.gov/sbdb_query.cgi?obj_group=all;obj_kind=all;obj_numbered=all;OBJ_field=0;ORB_field=0;c1_group=OBJ;c1_item=Ay;c1_op=%3D;c1_value=P;table_format=HTML;max_rows=100;format_option=comp;c_fields=AcBhBgBjBiBnBsAiArApAxAy;.cgifields=format_option;.cgifields=obj_kind;.cgifields=obj_group;.cgifields=obj_numbered;.cgifields=ast_orbit_class;.cgifields=table_format;.cgifields=com_orbit_class&query=1&c_sort=AyA 2015-06-17 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 12 IRAS-A-FPA-3-RDR-IMPS-V6.0 2004PDSS...12.....T 22 October 2019 1004 31 January 2017 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 free (online, AcuA catalog p. 153) 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 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/20160729213840/http://obswww.unige.ch/~behrend/page_cou.html 29 July 2016 – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1004 1003 Lilofee 1004 1005 Arago 001004 Category:Discoveries by Sergei Belyavsky Category:Named minor planets 001004 19230905