1648 Shajna

Stony asteroid from the inner regions of the asteroid belt October 2019 yes 1648 Shajna #D6D6D6 001648-asteroid shape model (1648) Shajna.png Shape model of Shajna from its lightcurve 5 September 1935 P. Shajn Simeiz Obs. (1648) Shajna 1935 RF1934 CK 11938 MC1941 FD1948 LC1951 EX 21952 SX1952 UW1955 QT1955 RPA921 GBA924 EQ Couple of astronomers(Pelageya and Grigory) main-belt(inner) 4 September 2017 (JD 2458000.5) 0 95.99 yr (35,061 days) 2.6971 AU 1.7737 AU 2.2354 AU 0.2065 3.34 yr (1,221 days) 250.93° 0.2949 ms / day 4.5723° 130.42° 134.71° 8.26 1.47 km8.30 0.30 km9.23 km (calculated)9.450 0.141 km 6.41368 0.00001 h6.41369 0.00005 h6.4140 0.0002 h6.4140 0.0164 h (R)6.4248 0.0164 h (S) 0.191 0.0160.20 (assumed)0.247 0.0490.35 0.13 Tholen = SSB–V = 0.792U–B = 0.497 11.838 0.003 (R)12.2112.54 1648 Shajna, provisional designation 1935 RF, is a stony asteroid from the inner regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 5 September 1935, by Russian astronomer Pelageya Shajn at Simeiz Observatory on the Crimean peninsula. Two weeks later, it was independently discovered by Cyril Jackson at Johannesburg Observatory, South Africa. It was later named after the discoverer and her husband, Russian astronomers Grigory Shajn. Orbit and classification Shajna orbits the Sun in the inner main-belt at a distance of 1.8–2.7 AU once every 3 years and 4 months (1,221 days). Its well-determined orbit has an eccentricity of 0.21 and an inclination of 5° with respect to the ecliptic. In 1921, Shajna was first identified as 1921 GB at Heidelberg Observatory. Its first used observation was taken at Uccle in 1934, when it was identified as 1934 CK 1, extending the body's observation arc by one year prior to its official discovery observation. Rotation period In July 2005, a rotational lightcurve of was obtained by French amateur astronomer Laurent Bernasconi. It gave a well-defined rotation period of 6.4140 hours with a brightness variation of 0.65 magnitude (U=3). Two modeled lightcurves from various surveys including the Lowell photometric database gave similar periods of 6.41368 and 6.41369 hours (U=n.a.). Photometric observations at the Palomar Transient Factory in September 2012, gave nearly identical periods of 6.4140 and 6.4248 hours in the R- and S-band, respectively (U=2/2). Diameter and albedo According to the surveys carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Shajna measures between 8.26 and 9.45 kilometers in diameter, and its surface has an albedo between 0.191 and 0.35. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 9.23 kilometers with an absolute magnitude of 12.54. Naming This minor planet was named in honor of the late couple of Russian astronomers Grigory Shajn (1892–1956) and the discoverer herself, Pelageya Shajn (1894–1956), first woman ever to discover a minor planet. The asteroid 1190 Pelagia is also named after her, while her husband is honored by the lunar crater Shayn. The official 1648 naming citation was published by the Minor Planet Center on 20 February 1962 (M.P.C. 2117). References 2017-03-29 last obs. JPL Small-Body Database Browser: 1648 Shajna (1935 RF) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001648 Jet Propulsion Laboratory 30 June 2017 Dictionary of Minor Planet Names – (1648) Shajna Schmadel Lutz D. Springer Berlin Heidelberg 131 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1649 (1648) Shajna 1648 Shajna (1935 RF) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1648 26 December 2016 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) 2009 https://archive.org/details/dictionaryminorp2008schm limited Appendix – Publication Dates of the MPCs Schmadel Lutz D. Springer Berlin Heidelberg 221 978-3-642-01964-7 10.1007/978-3-642-01965-4 2009dmpn.book.....S Asteroids and comets rotation curves – (1648) Shajna Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001648 26 December 2016 1 April 2019 https://web.archive.org/web/20190401181659/http://obswww.unige.ch/~behrend/page4cou.html#001648 dead 1648 26 December 2016 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 35447010 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 26 December 2016 6 C. R. Nugent A. Mainzer J. Bauer R. M. Cutri E. A. Kramer T. Grav J. Masiero S. Sonnett E. L. Wright September 2016 NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos The Astronomical Journal 152 3 12 2016AJ....152...63N 10.3847/0004-6256/152/3/63 1606.08923 free 6 J. Hanus J. Durech D. A. Oszkiewicz R. Behrend B. Carry M. Delbo O. Adam V. Afonina R. Anquetin P. Antonini L. Arnold M. Audejean P. Aurard M. Bachschmidt B. Baduel E. Barbotin P. Barroy P. Baudouin L. Berard N. Berger L. Bernasconi J.-G. Bosch S. Bouley I. Bozhinova J. Brinsfield L. Brunetto G. Canaud J. Caron F. Carrier G. Casalnuovo S. Casulli M. Cerda L. Chalamet S. Charbonnel B. Chinaglia A. Cikota F. Colas J.-F. Coliac A. Collet J. Coloma M. Conjat E. Conseil R. Costa R. Crippa M. Cristofanelli Y. Damerdji Debackè A. re A. Decock Q. Déhais T. Déléage S. Delmelle C. Demeautis M. Drózdz G. Dubos T. Dulcamara M. Dumont R. Durkee R. Dymock A. Escalante del Valle N. Esseiva R. Esseiva M. Esteban T. Fauchez M. Fauerbach M. Fauvaud S. Fauvaud E. Forné C. Fournel D. Fradet J. Garlitz O. Gerteis C. Gillier M. Gillon R. Giraud J.-P. Godard R. Goncalves Hiroko Hamanowa Hiromi Hamanowa K. Hay S. Hellmich S. Heterier D. Higgins R. Hirsch G. Hodosan M. Hren A. Hygate N. Innocent H. Jacquinot S. Jawahar E. Jehin L. Jerosimic A. Klotz W. Koff P. Korlevic E. Kosturkiewicz P. Krafft Y. Krugly F. Kugel O. Labrevoir J. Lecacheux M. Lehký A. Leroy B. Lesquerbault M. J. Lopez-Gonzales M. Lutz B. Mallecot J. Manfroid F. Manzini A. Marciniak A. Martin B. Modave R. Montaigut J. Montier E. Morelle B. Morton S. Mottola R. Naves J. Nomen J. Oey W. Ogloza M. Paiella H. Pallares A. Peyrot F. Pilcher J.-F. Pirenne P. Piron M. Polinska M. Polotto R. Poncy J. P. Previt F. Reignier D. Renauld D. Ricci F. Richard C. Rinner V. Risoldi D. Robilliard D. Romeuf G. Rousseau R. Roy J. Ruthroff P. A. Salom L. Salvador S. Sanchez T. Santana-Ros A. Scholz G. Séné B. Skiff K. Sobkowiak P. Sogorb F. Soldán A. Spiridakis E. Splanska S. Sposetti D. Starkey R. Stephens A. Stiepen R. Stoss J. Strajnic J.-P. Teng G. Tumolo A. Vagnozzi B. Vanoutryve J. M. Vugnon B. D. Warner M. Waucomont O. Wertz M. Winiarski M. Wolf February 2016 New and updated convex shape models of asteroids based on optical data from a large collaboration network Astronomy and Astrophysics 586 24 2016A&A...586A.108H 10.1051/0004-6361/201527441 1510.07422 119112278 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 118427201 26 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 26 December 2016 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 118745497 26 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/20241208174218/http://obswww.unige.ch/~behrend/page_cou.html 8 December 2024 – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1648 1647 Menelaus 1648 1649 Fabre 001648 Category:Discoveries by Pelageya Shajn Category:Named minor planets 001648 19350905