1817 Katanga

Stony main-belt asteroid October 2019 yes 1817 Katanga #D6D6D6 20 June 1939 C. Jackson Johannesburg Obs. (1817) Katanga 1939 MB1928 KD1950 NK1971 BG Katanga Province(Congo, Dem. Rep.) main-beltPhocaea 4 September 2017 (JD 2458000.5) 0 77.58 yr (28,337 days) 2.8258 AU 1.9172 AU 2.3715 AU 0.1916 3.65 yr (1,334 days) 173.17° 0.2699 ms / day 25.709° 88.723° 140.27° 9.76 1.21 km15.89 1.56 km15.90 1.0 km (IRAS:14)16.28 km (derived) 6.35 0.02 h7.2165 0.0003 h8.481 0.003 h 0.1331 0.018 (IRAS:14)0.2421 (derived)0.342 0.1510.353 0.089 S 10.7811.111.80 1817 Katanga, provisional designation 1939 MB, is a stony Phocaea asteroid in from the inner regions of the asteroid belt, approximately 16 kilometers in diameter. It was discovered on 20 June 1939, by English-born South African astronomer Cyril Jackson at Johannesburg Observatory in South Africa. It is named for the Katanga Province. Orbit and classification The S-type asteroid is a member of the Phocaea family, a smaller population of asteroids with similar orbital characteristics named after their largest member, 25 Phocaea. Katanga orbits the Sun in the inner main-belt at a distance of 1.9–2.8 AU once every 3 years and 8 months (1,334 days). Its orbit has an eccentricity of 0.19 and an inclination of 26° with respect to the ecliptic. Katangas observation arc begins with its official discovery observation in 1939, as its first observation made at Heidelberg Observatory in 1928, remained unused (1928 KD). Lightcurves In April 2008, a rotational lightcurve of Katanga was obtained from photometric observations by American astronomer Brian D. Warner at his Palmer Divide Observatory in Colorado. It gave a rotation period of 8.481 hours with a brightness variation of 0.30 magnitude (U=3). The quality of this result supersedes two periods previously obtained by astronomers Stefano Sposetti and Glenn Malcolm in May and June 2001, respectively (U=2/2). Diameter and albedo According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Katanga measures between 9.76 and 15.90 kilometers in diameter, and its surface has an albedo between 0.133 and 0.353. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.242 and a diameter of 16.28 kilometers with an absolute magnitude of 11.1. Naming This minor planet was named after the Katanga Province, a rich mining region in the Democratic Republic of the Congo in Central Africa. The approved naming citation was published by the Minor Planet Center on 1 February 1980 (M.P.C. 5183). References 2017-01-18 last obs. JPL Small-Body Database Browser: 1817 Katanga (1939 MB) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001817 Jet Propulsion Laboratory 1 July 2017 Dictionary of Minor Planet Names – (1817) Katanga Schmadel Lutz D. Springer Berlin Heidelberg 145 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1818 (1817) Katanga 1817 Katanga (1939 MB) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1817 15 December 2016 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 15 December 2016 Asteroids and comets rotation curves – (1817) Katanga Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001817 15 December 2016 1 April 2019 https://web.archive.org/web/20190401181659/http://obswww.unige.ch/~behrend/page4cou.html#001817 dead 1817 15 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 12 IRAS-A-FPA-3-RDR-IMPS-V6.0 2004PDSS...12.....T 22 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) 6 Joseph R. Masiero A. K. Mainzer T. Grav J. M. Bauer R. M. Cutri C. Nugent M. S. Cabrera November 2012 Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M The Astrophysical Journal Letters 759 1 5 2012ApJ...759L...8M 10.1088/2041-8205/759/1/L8 1209.5794 15 December 2016 Malcolm, G. June 2002 Rotational Periods and Lightcurves of 445 Edna, 1817 Katanga and 1847 Stobbe http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2002MPBu...29...28M The Minor Planet Bulletin 29 28–29 2002MPBu...29...28M 15 December 2016 Warner, Brian D. October 2008 Asteroid Lightcurve Analysis at the Palmer Divide Observatory: February-May 2008 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008MPBu...35..163W The Minor Planet Bulletin 35 4 163–166 1052-8091 2008MPBu...35..163W 15 December 2016 External links Lightcurve plot of 1817 Katanga, Palmer Divide Observatory, B. D. Warner (2008) 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 1817 1816 Liberia 1817 1818 Brahms 001817 Category:Discoveries by Cyril Jackson (astronomer) Category:Named minor planets 19390620