1014 Semphyra

Main-belt asteroid October 2019 yes 1014 Semphyra #D6D6D6 K. Reinmuth Heidelberg Obs. 29 January 1924 (1014) Semphyra 1924 PW1932 WH1984 YP 6 figure in poemby Aleksandr Pushkin main-belt(middle) 4 September 2017 (JD 2458000.5) 0 93.02 yr (33,975 days) 3.3624 AU 2.2443 AU 2.8034 AU 0.1994 4.69 yr (1,714 days) 332.39° 0.2100 ms / day 2.2681° 251.71° 233.24° 14.89 3.58 km17.17 0.88 km17.487 0.250 km23.21 km (calculated) 5.636 0.002 h 0.057 (assumed)0.083 0.0130.0835 0.01300.087 0.0090.12 0.06 SMASS XePX 11.9012.04 0.1512.10 1014 Semphyra, provisional designation 1924 PW, is a background asteroid from the central regions of the asteroid belt, approximately 17 kilometers in diameter. It was discovered on 29 January 1924, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany. The asteroid was named after the character "Semphyra" in a poem by Aleksandr Pushkin. (Zemfira, "The Gypsies") Orbit and classification Semphyra has not been associated with any known asteroid family. It orbits the Sun in the central main belt at a distance of 2.2–3.4 AU once every 4 years and 8 months (1,714 days). Its orbit has an eccentricity of 0.20 and an inclination of 2° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Heidelberg. Physical characteristics In the SMASS classification, Semphyra is an Xe-subtype that transitions from the X-type to the bright E-type asteroids, while the Wide-field Infrared Survey Explorer characterizes it as a dark P-type. Rotation period In February 2004, a rotational lightcurve of Semphyra was obtained from photometric observations by American astronomer Donald Pray at the Carbuncle Hill Observatory, Rhode Island (I00). The observations were made at a low phase angle of 1.6–2.9°. Lightcurve analysis gave a well-defined rotation period of 5.636 hours with a brightness amplitude of 0.12 magnitude (U=3), indicating that the body has a rather spheroidal shape. Diameter and albedo According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's WISE, Semphyra measures between 14.89 and 17.487 kilometers in diameter and its surface has an albedo between 0.083 and 0.12. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 23.21 kilometers based on an absolute magnitude of 11.9. Naming This minor planet was named after the character "Semphyra" in a poem by Russian Aleksandr Pushkin (1799–1837), who was directly honored with the naming of 2208 (2208). The asteroid's official name was proposed by N. Komendantov (RI 740) and mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 97). References 30em 2017-02-04 last obs. JPL Small-Body Database Browser: 1014 Semphyra (1924 PW) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001014 Jet Propulsion Laboratory 29 August 2017 Dictionary of Minor Planet Names – (1014) Semphyra Schmadel Lutz D. Springer Berlin Heidelberg 87 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1015 (1014) Semphyra 1014 Semphyra (1924 PW) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1014 29 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 29 August 2017 1014 29 August 2017 6 C. R. Nugent A. Mainzer J. Masiero J. Bauer R. M. Cutri T. Grav E. Kramer S. Sonnett R. Stevenson E. L. Wright December 2015 NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJ...814..117N The Astrophysical Journal 814 2 13 2015ApJ...814..117N 10.1088/0004-637X/814/2/117 1509.02522 29 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 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 Pray, Donald P. March 2005 Lightcurve analysis of asteroids 276, 539, 1014, 1067, 3693 and 4774 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2005MPBu...32....8P The Minor Planet Bulletin 32 1 8–9 1052-8091 2005MPBu...32....8P 29 August 2017 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 29 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 1014 1013 Tombecka 1014 1015 Christa 001014 Category:Discoveries by Karl Wilhelm Reinmuth 19240129 Category:Named minor planets Category:Alexander Pushkin 001014