1206 Numerowia

Main-belt asteroid October 2019 yes 1206 Numerowia #D6D6D6 001206-asteroid shape model (1206) Numerowia.png Shape model of Numerowia from its lightcurve 18 October 1931 K. Reinmuth Heidelberg Obs. (1206) Numerowia 1931 UH1974 QE1974 TY 1 Boris Numerov(Russian astronomer) main-belt(outer) 4 September 2017 (JD 2458000.5) 0 85.63 yr (31,276 days) 3.0180 AU 2.7123 AU 2.8651 AU 0.0533 4.85 yr (1,771 days) 38.115° 0.2032 ms / day 13.003° 324.44° 277.42° 14.173 0.092 km14.534 0.264 km15.63 1.09 km27.90 km (calculated) 4.7743 0.0013 h4.77529 0.00001 h 0.057 (assumed)0.141 0.0210.159 0.0260.1680 0.0205 C 11.511.80 1206 Numerowia (provisional designation 1931 UH) is an asteroid from the outer region of the asteroid belt, approximately 15 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory in southwest Germany on 18 October 1931, and named after Russian astronomer Boris Numerov. Orbit and classification Numerowia orbits the Sun in the outer main-belt at a distance of 2.7–3.0 AU once every 4 years and 10 months (1,771 days). Its orbit has an eccentricity of 0.05 and an inclination of 13° with respect to the ecliptic. The asteroid's observation arc begins at Heidelberg four days after its official discovery observation. Physical characteristics Rotation period and poles In February 2006, a rotational lightcurve of Numerowia was obtained from photometric observations by astronomer Lawrence Molnar and colleges at the Calvin–Rehoboth Observatory in New Mexico, United States. Lightcurve analysis gave a well-defined rotation period of 4.7743 hours with a high brightness variation of 0.63 magnitude (U=3), indicating that the body has a non-spheroidal shape. A 2016-published lightcurve, using modeled photometric data from the Lowell Photometric Database (LPD), gave a concurring period of 4.77529 hours (U=n.a.), as well as two spin axis of (64.0°, −50.0°) and (271.0°, −69.0°) in ecliptic coordinates (λ, β). Diameter and albedo According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Numerowia measures between 14.173 and 15.63 kilometers in diameter and its surface has an albedo between 0.141 and 0.168. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for C-type asteroid of 0.057 and consequently calculates a larger diameter of 27.90 kilometers using an absolute magnitude of 11.5. Naming This minor planet was named after Russian astronomer and geophysicist Boris Numerov (1891–1941), founder and director of the Institute for Theoretical Astronomy in Leningrad, who was executed for espionage by the Soviet Union in 1941. The accusation was based on the fact that a German had named the asteroid after him. In 1957, his memory was rehabilitated. The lunar crater Numerov was also named in his honour. The official naming citation was published by Paul Herget in The Names of the Minor Planets in 1955 (H 112). References 30em 2017-06-04 last obs. JPL Small-Body Database Browser: 1206 Numerowia (1931 UH) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001206 https://web.archive.org/web/20200918053841/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001206 18 September 2020 Jet Propulsion Laboratory 5 August 2017 Dictionary of Minor Planet Names – (1206) Numerowia Schmadel Lutz D. Springer Berlin Heidelberg 101 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1207 (1206) Numerowia 1206 Numerowia (1931 UH) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1206 5 August 2017 Columbia University Computing History–A Chronology of Computing at Columbia University Columbia University 30 January 2017 http://www.columbia.edu/cu/computinghistory/ 5 August 2017 6 Joseph R. Masiero A. K. Mainzer T. Grav J. M. Bauer R. M. Cutri J. Dailey P. R. M. Eisenhardt R. S. McMillan T. B. Spahr M. F. Skrutskie D. Tholen R. G. Walker E. L. Wright E. DeBaun D. Elsbury T. IV Gautier S. Gomillion A. Wilkins November 2011 Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M The Astrophysical Journal 741 2 20 2011ApJ...741...68M 10.1088/0004-637X/741/2/68 1109.4096 5 August 2017 1206 5 August 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 (online, AcuA catalog p. 153) 6 A. Mainzer T. Grav J. Masiero E. Hand J. Bauer D. Tholen R. S. McMillan T. Spahr R. M. Cutri E. Wright J. Watkins W. Mo C. Maleszewski November 2011 NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results The Astrophysical Journal 741 2 25 2011ApJ...741...90M 10.1088/0004-637X/741/2/90 1109.6407 6 Lawrence A. Molnar Melissa J. Haegert Christopher N. Beaumont Marjorie J. Block Timothy H. Brom Andrew R. Butler Peter L. Cook Allyson G. Green Joshua P. Holtrop Kathleen M. Hoogeboom Jason J. Kulisek Jonathan S. Lovelace Jeffrey S. Olivero Achyut Shrestha Jessie F. Taylor Kenneth D. Todd John D. Vander Heide Samuel O. van Scoter January–March 2008 Lightcurve Analysis of a Magnitude Limited Asteroid Sample http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008MPBu...35....9M The Minor Planet Bulletin 35 1 9–12 1052-8091 2008MPBu...35....9M 5 August 2017 J. Durech J. Hanus D. Oszkiewicz R. Vanco March 2016 Asteroid models from the Lowell photometric database http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016A&A...587A..48D Astronomy and Astrophysics 587 6 2016A&A...587A..48D 10.1051/0004-6361/201527573 1601.02909 5 August 2017 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 1206 1205 Ebella 1206 1207 Ostenia 001206 Category:Discoveries by Karl Wilhelm Reinmuth Category:Named minor planets 19311018