1522 Kokkola

Vestian asteroid October 2019 yes 1522 Kokkola #D6D6D6 18 November 1938 L. Oterma Turku Obs. (1522) Kokkola 1938 WO1949 WB Kokkola (Finnish town) main-beltVestoid 4 September 2017 (JD 2458000.5) 0 77.72 yr (28,389 days) 2.5398 AU 2.1955 AU 2.3677 AU 0.0727 3.64 yr (1,331 days) 196.45° 0.2705 ms / day 5.3522° 60.617° 30.542° 8.65 0.57 km9.422 0.094 km9.57 km (derived)9.781 0.080 km 5.83 h 0.1924 0.03740.20 (assumed)0.206 0.0110.252 0.025 LSSB–V = 0.880U–B = 0.510 12.30 0.3512.4312.46 1522 Kokkola (provisional designation 1938 WO) is a stony Vestian asteroid from the inner regions of the asteroid belt, approximately 9.5 kilometers in diameter. It was discovered on 18 November 1938, by pioneering Finnish astronomer Liisi Oterma at Turku Observatory in Southwest Finland. It was later named for the town of Kokkola. Classification and orbit The S-type asteroid and member of the Vesta family is also classified as LS-type, an intermediate to the L-types. It orbits the Sun at a distance of 2.2–2.5 AU once every 3 years and 8 months (1,331 days). Its orbit has an eccentricity of 0.07 and an inclination of 5° with respect to the ecliptic. Due to a precovery taken at Turku, Kokkola's observation arc was extended by 3 weeks prior to its official discovery observation. Physical characteristics In May 1984, American astronomer Richard Binzel obtained a rotational lightcurve of Kokkola from photometric observations. Lightcurve analysis gave a well-defined rotation period of 5.83 hours with a brightness amplitude of 0.29 magnitude (U=3). According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Kokkola measures 9.42 kilometers in diameter and its surface has an albedo of 0.206 (revised albedo fits from 2014). The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.20 and derives a diameter of 9.57 kilometers with an absolute magnitude of 12.46. Naming This minor planet was named for Kokkola, a Finnish town and port on the Gulf of Bothnia. The official 1522 naming citation was published by the Minor Planet Center on 20 February 1976 (M.P.C. 3929). References 2016-07-13 last obs. JPL Small-Body Database Browser: 1522 Kokkola (1938 WO) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001522 Jet Propulsion Laboratory 5 June 2017 Dictionary of Minor Planet Names – (1522) Kokkola Schmadel Lutz D. Springer Berlin Heidelberg 121 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1523 (1522) Kokkola 1522 Kokkola (1938 WO) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1522 3 January 2017 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) 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 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 3 January 2017 1522 3 January 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 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 3 January 2017 Binzel, R. P. October 1987 A photoelectric survey of 130 asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1987Icar...72..135B Icarus 72 1 135–208 0019-1035 1987Icar...72..135B 10.1016/0019-1035(87)90125-4 3 January 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 3 January 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 1522 1521 Seinäjoki 1522 1523 Pieksämäki 001522 Category:Discoveries by Liisi Oterma Category:Named minor planets 19381118