1929 Kollaa

Vestian main-belt asteroid October 2019 yes 1929 Kollaa #D6D6D6 20 January 1939 Y. Väisälä Turku Obs. (1929) Kollaa 1939 BS1939 CH1943 GG1968 BH1976 JF 3 Kollaa River(river in Karelia) main-beltVestian 4 September 2017 (JD 2458000.5) 0 48.64 yr (17,766 days) 2.5396 AU 2.1862 AU 2.3629 AU 0.0748 3.63 yr (1,327 days) 226.60° 0.2714 ms / day 7.7797° 65.429° 71.220° 6.06 km (calculated)6.71 0.34 km7.772 0.147 km 2.980 0.005 hlcdb-Ryan-20072.9887 0.0004 h 0.3855 0.09580.393 0.0660.4 (assumed) SMASS = VV 12.212.5012.612.64 0.3212.7 1929 Kollaa, provisional designation 1939 BS, is a stony Vestian asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland, on 20 January 1939. The asteroid was named after the Kollaa River in what is now Russia. Orbit and classification Kollaa is a member of the Vesta family. Vestian asteroids have a composition akin to cumulate eucrite meteorites and are thought to have originated deep within 4 Vesta's crust, possibly from the Rheasilvia crater, a large impact crater on its southern hemisphere near the South pole, formed as a result of a subcatastrophic collision. The asteroid Vesta is the main-belt's second-most-massive body after 1 Ceres. The asteroid orbits the Sun in the inner main-belt at a distance of 2.2–2.5 AU once every 3 years and 8 months (1,327 days). Its orbit has an eccentricity of 0.07 and an inclination of 8° with respect to the ecliptic. As no precoveries were taken, the asteroid's observation arc begins with its discovery. Physical characteristics In the SMASS taxonomy, Kollaa is a bright V-type asteroid. Lightcurves It has a well-defined rotation period of 2.98 hours, derived from two rotational lightcurve analysis. In March 2004, photometric observations at the U.S. Magdalena Ridge Observatory in New Mexico rendered a period of 2.980 hours with a brightness variation of 0.20 in magnitude (U=3).lcdb-Ryan-2007 In 2008 a second, concurring period was obtained by French amateur astronomer Pierre Antonini at his private Observatoire de Bédoin in France (132). It gave a period of 2.9887 hours and an amplitude 0.22 in magnitude (U=3). Diameter and albedo According to the surveys carried out by NASA's Wide-field Infrared Survey Explorer and its subsequent NEOWISE mission, the body measures 6.7 and 7.7 kilometers in diameter, respectively, and its surface has an albedo 0.39. while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.40 and calculates a diameter of 6.4 kilometers with an absolute magnitude of 12.7. Naming This minor planet is named after the Kollaa River in Karelia, the focal point of violent battles during the Finnish Winter War (1939–40). The official naming citation was published by the Minor Planet Center on 1 August 1980 (M.P.C. 5450). Notes lcdb-Ryan-2007 Ryan (2007) web: rotation period 2.980 0.005 hours with a brightness amplitude of 0.22 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (1929) Kollaa from unpublished results by W. H. Ryan and E.V. Ryan, (2007). References 30em 2016-09-14 last obs. JPL Small-Body Database Browser: 1929 Kollaa (1939 BS) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001929 https://web.archive.org/web/20200918021959/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001929 18 September 2020 Jet Propulsion Laboratory 10 June 2017 Dictionary of Minor Planet Names – (1929) Kollaa Schmadel Lutz D. Springer Berlin Heidelberg 155 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1930 (1929) Kollaa 1929 Kollaa (1939 BS) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1929 24 July 2016 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 24 July 2016 Asteroids and comets rotation curves – (1929) Kollaa Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001929 24 July 2016 3 August 2003 https://web.archive.org/web/20030803183423/http://obswww.unige.ch/~behrend/page4cou.html#001929 dead Michael S. Kelley Faith Vilas Michael J. Gaffey Paul A. Abell September 2003 Quantified mineralogical evidence for a common origin of 1929 Kollaa with 4 Vesta and the HED meteorites http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2003Icar..165..215K Icarus 165 1 215–218 2003Icar..165..215K 10.1016/S0019-1035(03)00149-0 18 January 2016 1929 24 July 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 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...90M The Astrophysical Journal 741 2 25 2011ApJ...741...90M 10.1088/0004-637X/741/2/90 1109.6407 35447010 24 July 2016 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 24 July 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 24 July 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 8 December 2016 External links Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20110721225144/http://www.minorplanet.info/lightcurvedatabase.html 21 July 2011 ) 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 1929 1928 Summa 1929 1930 Lucifer 001929 Category:Discoveries by Yrjö Väisälä Category:Named minor planets 001929 19390120