1518 Rovaniemi

Main-belt asteroid October 2019 yes 1518 Rovaniemi #D6D6D6 1518Rovaniemi (Lightcurve Inversion).png Lightcurve-based 3D-model of Rovaniemi Y. Väisälä Turku Obs. 15 October 1938 (1518) Rovaniemi 1938 UA1928 TL1951 SH Rovaniemi (Finnish city) main-belt(inner)Flora 4 September 2017 (JD 2458000.5) 0 88.74 yr (32,412 days) 2.5449 AU 1.9053 AU 2.2251 AU 0.1437 3.32 yr (1,212 days) 246.56° 0.2970 ms / day 6.7137° 27.804° 37.101° 7.46 1.30 km7.76 0.71 km8.480 0.167 km8.98 km (calculated)9.019 0.070 km 5.247 0.001 h5.249 0.002 h 0.24 (assumed)0.2631 0.03740.295 0.0630.31 0.170.340 0.195 S 12.312.3412.412.68 1518 Rovaniemi (provisional designation 1938 UA) is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. Discovered by Yrjö Väisälä at the Turku Observatory in 1938, the asteroid was later named after the Finnish city of Rovaniemi. Discovery Rovaniemi was discovered on 15 October 1938, by Finnish astronomer Yrjö Väisälä at the Turku Observatory in Southwest Finland. Six nights later, it was independently discovered by Belgian astronomer Eugène Delporte at Uccle Observatory on 21 October 1938. The Minor Planet Center, however, only recognizes the first discoverer. The asteroid was first identified as 1928 TL at Simeiz Observatory on 7 October 1928.First-designation The body's observation arc begins two weeks later at Simeiz on 21 October 1928, almost 10 years prior to the asteroid's official discovery observation at Turku. Orbit and classification Rovaniemi is a member of the Flora family (402), a giant asteroid family and the largest family of stony asteroids in the main-belt.23 It orbits the Sun in the inner main-belt at a distance of 1.9–2.5 AU once every 3 years and 4 months (1,212 days). Its orbit has an eccentricity of 0.14 and an inclination of 7° with respect to the ecliptic. Physical characteristics Rovaniemi is an assumed stony S-type asteroid, which corresponds to the overall spectral type of the Flora family.23 Rotation period In January 2009, two rotational lightcurves of Rovaniemi were obtained from photometric observations by René Roy at Blauvac Observatory (627) in France, and by Brian Warner at the Palmer Divide Observatory (716) in Colorado, United States. Lightcurve analysis gave a rotation period of 5.247 and 5.249 hours with a brightness amplitude of 0.26 and 0.25 magnitude, respectively (U=2+/3). Spin axis In 2013, an international study modeled Rovaniemi's lightcurve from various data sources, including the Uppsala Asteroid Photometric Catalogue and the Palomar Transient Factory survey. The lightcurve gave a concurring period of 5.25047 hours and allowed for the determination of two spin axis of (62.0°, 60.0°) and (265.0°, 45.0°) in ecliptic coordinates (λ, β). Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Rovaniemi measures between 7.46 and 9.019 kilometers in diameter and its surface has an albedo between 0.2631 and 0.340. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the Flora family's largest member and namesake – and calculates a diameter of 8.98 kilometers based on an absolute magnitude of 12.4. Naming This minor planet was named after the Finnish city of Rovaniemi, located just six kilometers south of the Arctic Circle. The official 1518 naming citation was published by the Minor Planet Center on 20 February 1976 (M.P.C. 3929). Notes First-designation Alternatively to the Simeiz Observatory, it is also possible that observations at the Italian Turin Observatory on 13 and 14 October 1928, lead to the assignment of Rovaniemis first provisional designation, 1928 TL. References 30em 2017-07-04 last obs. JPL Small-Body Database Browser: 1518 Rovaniemi (1938 UA) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001518 Jet Propulsion Laboratory 6 September 2017 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 121 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1519 (1518) Rovaniemi 1518 Rovaniemi (1938 UA) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1518 6 September 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 Asteroids and comets rotation curves – (1518) Rovaniemi Behrend Raoul Geneva Observatory https://obswww.unige.ch/~behrend/page4cou.html#001518 6 September 2017 October 2026 InternetArchiveBot 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 https://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 6 September 2017 Asteroid 1518 Rovaniemi – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1518+Rovaniemi#Asteroid%201518%20RovaniemiEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 26 October 2019 October 2026 InternetArchiveBot D. Nesvorný M. Broz V. Carruba December 2014 Identification and Dynamical Properties of Asteroid Families Asteroids IV 297–321 2015aste.book..297N 10.2458/azu_uapress_9780816532131-ch016 1502.01628 978-0-8165-3213-1 1518 6 September 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 https://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 6 September 2017 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 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 Warner, Brian D. July 2009 Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2008 December - 2009 March https://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2009MPBu...36..109W The Minor Planet Bulletin 36 3 109–116 1052-8091 2009MPBu...36..109W 6 September 2017 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 Pä ä kkö P. nen 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 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2013A&A...551A..67H Astronomy and Astrophysics 551 16 2013A&A...551A..67H 10.1051/0004-6361/201220701 1301.6943 6 September 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/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 1518 1517 Beograd 1518 1519 Kajaani 001518 Category:Discoveries by Yrjö Väisälä Category:Named minor planets 19381015