1909 Alekhin

Slow-rotating, stony main-belt asteroid May 2020 yes 1909 Alekhin #D6D6D6 4 September 1972 L. Zhuravleva Crimean Astrophysical Obs. (1909) Alekhin 1972 RW 21926 GU1930 KF1930 KM1934 NZ1934 OC1941 FJ1960 FD1969 UU1971 DL Alexander Alekhine(chess grandmaster) main-belt(inner) 4 September 2017 (JD 2458000.5) 0 91.06 yr (33,259 days) 2.9693 AU 1.8758 AU 2.4226 AU 0.2257 3.77 yr (1,377 days) 53.882° 0.2614 ms / day 1.7955° 227.46° 5.6412° 15.45 9.22 km17.33 km (derived)17.42 1.5 km (IRAS:15)18.59 0.37 km18.681 0.04318.847 0.129 km 148.2252 0.6228 h148.6 0.2 h 0.0446 (derived)0.0460 0.00180.060 0.0040.062 0.0030.067 0.0830.0700 0.014 (IRAS:15) S 12.3012.44 0.3212.6012.646 0.003 (R)12.812.912.91 0.07 1909 Alekhin, provisional designation 1972 RW 2, is a stony asteroid and slow rotator from the inner regions of the asteroid belt, approximately 17 kilometers in diameter. It was discovered on 4 September 1972, by Russian–Ukrainian astronomer Lyudmila Zhuravleva at the Crimean Astrophysical Observatory, Nauchnyj, on the Crimean peninsula, and named after chess grandmaster and World Chess Champion Alexander Alekhine. Orbit and classification The S-type asteroid orbits the Sun in the inner main-belt at a distance of 1.9–3.0 AU once every 3 years and 9 months (1,377 days). Its orbit has an eccentricity of 0.23 and an inclination of 2° with respect to the ecliptic. Physical characteristics Slow rotator Alekhin is a slow rotator. In March 2009 and September 2010, two rotational lightcurves for Alekhin were obtained from photometric observations made by the Palomar Transient Factory and by astronomer Roger Dymock, respectively. The lightcurves gave a rotation period of 148 hours with a brightness variation of 0.42–0.45 magnitude (U=2/3). 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, Alekhin measures between 15.5 and 18.8 kilometers in diameter and its surface has an albedo of 0.046 to 0.070. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.045 and a diameter of 17.3 kilometers with an absolute magnitude of 12.8. Occultation Alekhin is scheduled to occlude a 9.1 magnitude star in the Leo constellation on 30 November 2008, dimming the magnitude of both heavenly bodies for a maximum duration of 0.6 seconds. Astronomers had, as of March 2008, not predicted an optimal trajectory for the event. Naming This minor planet was named in honour of Russian-born Alexander Alekhine (1892–1946), chess grandmaster, considered one of the greatest chess players ever. The official 1909 naming citation was published by the Minor Planet Center on 20 February 1976 (M.P.C. 3937). References 30em 2017-05-05 last obs. JPL Small-Body Database Browser: 1909 Alekhin (1972 RW2) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001909 Jet Propulsion Laboratory 9 June 2017 Dictionary of Minor Planet Names – (1909) Alekhin Schmadel Lutz D. Springer Berlin Heidelberg 153 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1910 (1909) Alekhin 1909 Alekhin (1972 RW2) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1909 10 December 2016 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) Appendix – Publication Dates of the MPCs Schmadel Lutz D. 2009 Springer Berlin Heidelberg 221 978-3-642-01964-7 10.1007/978-3-642-01965-4 2009dmpn.book.....S https://cds.cern.ch/record/1339661 Preston Steve IOTA/IOTA-ES occultation update for (1909) Alekhin / TYC 0264-00685-1 event on 2008 Nov 30, 06:05 UT asteroidocculatation.com 2007-05-14 http://www.asteroidoccultation.com/2008_11/1130_1909_14510_Summary.txt 2008-03-09 November 2010 H3llBot 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 12 2004PDSS...12.....T 17 October 2019 1909 10 December 2016 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 http://pasj.oxfordjournals.org/content/63/5/1117.full.pdf+html Publications of the Astronomical Society of Japan 63 5 1117–1138 2011PASJ...63.1117U 10.1093/pasj/63.5.1117 17 October 2019 free (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 118700974 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 46350317 10 December 2016 Dymock, Roger October 2009 Lightcurve and Absolute Magnitude of 1909 Alekhin http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2009MPBu...36..182D The Minor Planet Bulletin 36 4 182–183 1052-8091 2009MPBu...36..182D 10 December 2016 6 Adam Waszczak Chan-Kao Chang Eran O. Ofek Russ Laher Frank Masci David Levitan Jason Surace Yu-Chi Cheng Wing-Huen Ip Daisuke Kinoshita George Helou Thomas A. Prince Shrinivas Kulkarni September 2015 Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W The Astronomical Journal 150 3 35 2015AJ....150...75W 10.1088/0004-6256/150/3/75 1504.04041 8342929 10 December 2016 Gerard Faure Lawrence Garrett October 2009 Suggested Revised H Values of Selected Asteroids: Report Number 4 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2009MPBu...36..140F The Minor Planet Bulletin 36 4 140–143 1052-8091 2009MPBu...36..140F 10 December 2016 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 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V Icarus 261 34–47 2015Icar..261...34V 10.1016/j.icarus.2015.08.007 1506.00762 53493339 10 December 2016 6 Joseph R. Masiero T. Grav A. K. Mainzer C. R. Nugent J. M. Bauer R. Stevenson S. Sonnett August 2014 Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 119293330 10 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/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 1909 1908 Pobeda 1909 1910 Mikhailov 001909 Category:Discoveries by Lyudmila Zhuravleva Category:Named minor planets 001909 19720904 Category:Alexander Alekhine