1255 Schilowa

Main-belt asteroid October 2019 yes 1255 Schilowa #D6D6D6 G. Neujmin Simeiz Obs. 8 July 1932 (1255) Schilowa 1932 NC1933 VBA905 UC Maria Zhilova(Russian astronomer) main-belt(outer)background 27 April 2019 (JD 2458600.5) 0 113.54 yr (41,472 d) 3.6891 AU 2.5983 AU 3.1437 AU 0.1735 5.57 yr (2,036 d) 122.84° 0.1768 ms / day 8.5473° 237.62° 133.51° 32.52 1.6 km33.669 0.718 km35.846 2.824 km36.49 0.51 km37.24 4.78 km 29.536 0.006 h 0.071 0.0310.111 0.0040.1144 0.02630.130 0.0270.1389 0.015 S (assumed) 10.2010.310.63 1255 Schilowa, provisional designation 1932 NC, is a background asteroid from the outer regions of the asteroid belt, approximately 34 km mi off 2 us in diameter. It was discovered on 8 July 1932, by Soviet astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula. The asteroid has a longer-than average rotation period of 29.5 hours. It was named after Mariya Zhilova (Schilowa), who was Russia's first professional female astronomer. Orbit and classification Schilowa is a non-family asteroid from the main belt's background population. It orbits the Sun in the outer main-belt at a distance of 2.6–3.7 AU once every 5 years and 7 months (2,036 days; semi-major axis of 3.14 AU). Its orbit has an eccentricity of 0.17 and an inclination of 9° with respect to the ecliptic. The asteroid was first observed as A905 UC at Heidelberg Observatory in October 1905. The body's observation arc began one week later at Heidelberg in November 1905, almost 27 years prior to its official discovery observation at Simeiz. Naming This minor planet was named after Mariya Vasilyevna Zhilova (1870–1934), also known Mariya Shilova or Schilowa, a Russian astronomer at the Pulkovo Observatory near Saint Petersburg. She was Russia's first professional female astronomer and awarded for her work on celestial mechanics by the Russian Astronomical Society in 1905. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 115). Physical characteristics Schilowa is an assumed S-type asteroid. Rotation period Between 2005 and 2009, three rotational lightcurves of Schilowa were obtained from photometric observations by European astronomers Pierre Antonini, Laurent Bernasconi, René Roy, Reiner Stoss, Jaime Nomen, Salvador Sánchez (astronomer) Salvador Sánchez fr Salvador Sánchez (astronome) it Salvador Sánchez (astronomo), Raoul Behrend. Lightcurve analysis gave a rotation period of 29.536 hours (also 24 h and 29.7 h) with a brightness amplitude between 0.09 and 0.15 magnitude (U=2 and 2/2-). Spin axis In 2013, an international study modeled a lightcurve from various data sources including the Uppsala Asteroid Photometric Catalogue and the Palomar Transient Factory survey. The lightcurve gave a sidereal period of 29.4674 hours and allowed for the determination of two spin axis of (156.0°, −4.0°) and (338.0°, 15.0°) in ecliptic coordinates (λ, β). Diameter and albedo According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Schilowa measures between 32.52 and 37.24 kilometers in diameter and its surface has an albedo between 0.071 and 0.1389. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1273 and a diameter of 32.44 kilometers based on an absolute magnitude of 10.3. References 30em 2019-05-11 last obs. JPL Small-Body Database Browser: 1255 Schilowa (1932 NC) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001255 Jet Propulsion Laboratory 4 November 2019 Dictionary of Minor Planet Names – (1255) Schilowa Schmadel Lutz D. Springer Berlin Heidelberg 104 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1256 (1255) Schilowa 1255 Schilowa (1932 NC) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1255 4 November 2019 Asteroids and comets rotation curves – (1255) Schilowa Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page3cou.html#001255 27 December 2017 23 April 2019 https://web.archive.org/web/20190423121547/http://obswww.unige.ch/~behrend/page3cou.html#001255 dead 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 The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 Asteroid 1255 Schilowa – Proper Elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1255 29 October 2019 Asteroid 1255 Schilowa Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1255+Schilowa 4 November 2019 https://web.archive.org/web/20201004055207/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1255+Schilowa 4 October 2020 dead 1255 27 December 2017 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 27 December 2017 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 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 J. Hanus J. Durech M. Broz A. Marciniak B. D. Warner F. Pilcher R. Stephens R. Behrend B. Carry D. Capek P. Antonini M. Audejean K. Augustesen E. Barbotin P. Baudouin A. Bayol L. Bernasconi W. Borczyk J.-G. Bosch E. Brochard L. Brunetto S. Casulli A. Cazenave S. Charbonnel B. Christophe F. Colas J. Coloma M. Conjat W. Cooney H. Correira V. Cotrez A. Coupier R. Crippa M. Cristofanelli Ch. Dalmas C. Danavaro C. Demeautis T. Droege R. Durkee N. Esseiva M. Esteban M. Fagas G. Farroni M. Fauvaud S. Fauvaud F. Del Freo L. Garcia S. Geier C. Godon K. Grangeon H. Hamanowa H. Hamanowa N. Heck S. Hellmich D. Higgins R. Hirsch M. Husarik T. Itkonen O. Jade K. Kaminski P. Kankiewicz A. Klotz R. A. Koff A. Kryszczynska T. Kwiatkowski A. Laffont A. Leroy J. Lecacheux Y. Leonie C. Leyrat F. Manzini A. Martin G. Masi D. Matter J. Michalowski M. J. Michalowski T. Michalowski J. Michelet R. Michelsen E. Morelle S. Mottola R. Naves J. Nomen J. Oey W. Ogloza A. Oksanen D. Oszkiewicz P. Pääkkönen M. Paiella H. Pallares J. Paulo M. Pavic B. Payet M. Polinska D. Polishook R. Poncy Y. Revaz C. Rinner M. Rocca A. Roche D. Romeuf R. Roy H. Saguin P. A. Salom S. Sanchez G. Santacana T. Santana-Ros J.-P. Sareyan K. Sobkowiak S. Sposetti D. Starkey R. Stoss J. Strajnic J.-P. Teng B. Trégon A. Vagnozzi F. P. Velichko N. Waelchli K. Wagrez H. Wücher March 2013 Asteroids' physical models from combined dense and sparse photometry and scaling of the YORP effect by the observed obliquity distribution Astronomy and Astrophysics 551 16 2013A&A...551A..67H 10.1051/0004-6361/201220701 1301.6943 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 1255 1254 Erfordia 1255 1256 Normannia 001255 Category:Discoveries by Grigory Neujmin Category:Named minor planets 19320708