1500 Jyväskylä

Asteroid October 2019 yes 1500 Jyväskylä #D6D6D6 001500-asteroid shape model (1500) Jyväskylä.png Shape model of Jyväskylä from its lightcurve 16 October 1938 Y. Väisälä Turku Obs. (1500) Jyväskylä 1938 UH fi ˈjyʋæsˌkylæ lang Jyväskylä (Finnish city) main-beltFlora 4 September 2017 (JD 2458000.5) 0 68.59 yr (25,051 days) 2.6685 AU 1.8186 AU 2.2435 AU 0.1894 3.36 yr (1,227 days) 172.97° 0.2933 ms / day 7.4359° 19.925° 17.100° 6.63 km (calculated)7.39 1.59 km8.088 0.103 km8.095 0.136 km 8.82750 0.00001 h 0.161 0.0500.1614 0.02540.24 (assumed)0.31 0.13 Tholen = SSB–V = 0.920U–B = 0.520 12.7613.06 1500 Jyväskylä (fi ˈjyʋæsˌkylæ lang; provisional designation 1938 UH) is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 16 October 1938, by Finnish astronomer Yrjö Väisälä at the Turku Observatory in Southwest Finland. It was named for the Finnish town Jyväskylä. Classification and orbit Jyväskylä is a member of the Flora family, a large collisional group of stony asteroids. It orbits the Sun in the inner main-belt at a distance of 1.8–2.7 AU once every 3 years and 4 months (1,227 days). Its orbit has an eccentricity of 0.19 and an inclination of 7° with respect to the ecliptic. The body's observation arc begins at Turku, 3 weeks prior to its official discovery observation. Physical characteristics In 2016, Jyväskylä's modeled lightcurve was derived from data contained in the Lowell photometric database. Lightcurve analysis revealed a rotation period of 8.8275 hours and a spin axis of (123°, −75.0°) in ecliptic coordinates (U=n.a.). According to the survey carried out by NASA's Wide-field Infrared Survey Explorer (WISE) with its subsequent NEOWISE mission, the asteroid measures between 7.39 and 8.095 kilometers in diameter, and its surface has an albedo between 0.161 and 0.31. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the largest member and namesake of this family – and calculates a diameter of 6.63 kilometers, using an absolute magnitude of 13.06. Naming This minor planet was named for the Finnish town Jyväskylä. It is the largest city in the region of Central Finland and on the Finnish Lakeland. The official 1500 naming citation was published by the Minor Planet Center on 20 February 1976 (M.P.C. 3928). References 2017-05-02 last obs. JPL Small-Body Database Browser: 1500 Jyvaskyla (1938 UH) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001500 Jet Propulsion Laboratory 30 June 2017 Dictionary of Minor Planet Names – (1500) Jyväskylä Schmadel Lutz D. Springer Berlin Heidelberg 119 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1501 (1500) Jyväskylä 1500 Jyvaskyla (1938 UH) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1500 4 January 2017 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) Appendix – Publication Dates of the MPCs Schmadel Lutz D. 2009 Springer Berlin Heidelberg 221 978-3-642-01964-7 10.1007/978-3-642-01965-4 2009dmpn.book.....S 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 119293330 4 January 2017 1500 4 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 35447010 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 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 4 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 1500 1499 Pori 1500 1501 Baade 001500 Category:Discoveries by Yrjö Väisälä Category:Named minor planets 001500 19381016