1696 Nurmela

Baptistina asteroid April 2018 yes 1696 Nurmela #D6D6D6 18 March 1939 Y. Väisälä Turku Obs. (1696) Nurmela 1939 FF1939 GL1949 DK1951 YK Tauno Nurmela(University of Turku) main-beltinnerBaptistinaFlora 23 March 2018 (JD 2458200.5) 0 78.30 yr (28,598 d) 2.4842 AU 2.0391 AU 2.2616 AU 0.0984 3.40 yr (1,242 d) 76.752° 0.2898 ms / day 6.0374° 21.035° 164.84° 6.06 1.18 km7.69 2.07 km9.232 0.181 km9.911 0.056 km10.31 0.44 km14.64 km (calculated) 3.1587 0.0001 h3.1587 0.0001 h3.159 0.001 hlightcurve-plot-Stephens 0.057 (assumed)0.116 0.0110.1246 0.01660.155 0.0210.18 0.130.28 0.20 C (assumed) 12.9013.19 1696 Nurmela, provisional designation 1939 FF, is a Baptistina asteroid from the inner regions of the asteroid belt, approximately 10 km mi off 1 us in diameter. It was discovered on 18 March 1939, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland, and named after Finnish academician Tauno Nurmela. The possibly elongated asteroid has a rotation period of 3.15 hours. Orbit and classification Nurmela is the second-largest member of the small Baptistina family (403), a large inner-belt family, named after 298 Baptistina, its largest member and namesake. When applying the hierarchical clustering method to its proper orbital elements, it is also 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 2.0–2.5 AU once every 3 years and 5 months (1,242 days; semi-major axis of 2.26 AU). Its orbit has an eccentricity of 0.10 and an inclination of 6° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Turku. Physical characteristics Nurmela is an assumed carbonaceous C-type asteroid, while its albedo and membership to the Baptistina family is indicative for an X-type.23 Rotation period In March and April 2007, two rotational lightcurves of Nurmela was obtained from photometric observations by Adrián Galád and Robert Stephens. They gave an identical rotation period of 3.1587 hours with a brightness variation of 0.33 and 0.42 magnitude, respectively (U=3/3). In April 2017, another observation by Stephens gave a concurring period of 3.159 hours (U=3) with an amplitude of 0.58 magnitude, indicative for an elongated shape.lightcurve-plot-Stephens Diameter and albedo According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Nurmela measures between 6.06 and 10.31 kilometers in diameter and its surface has an albedo between 0.116 and 0.28. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 14.64 kilometers based on an absolute magnitude of 12.9. Naming This minor planet was named in honor of Finnish academician Tauno Kalervo Nurmela (1907–1985), some time professor of Romanic philology and later chancellor of University of Turku. The official naming citation was published by the Minor Planet Center on 1 April 1980 (M.P.C. 5281). Notes lightcurve-plot-Stephens Lightcurve plot of (1696) Nurmela, by Stephens at the CS3 U81 in April 2017, with rotation period 3.159 0.001 hours and a brightness amplitude of 0.58 0.02 mag. Quality code of 3. Summary figures at the LCDB References 2017-06-04 last obs. JPL Small-Body Database Browser: 1696 Nurmela (1939 FF) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001696 Jet Propulsion Laboratory 19 April 2018 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 135 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1697 (1696) Nurmela 1696 Nurmela (1939 FF) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1696 19 April 2018 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 17 December 2016 Asteroid 1696 Nurmela – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1696+Nurmela#Asteroid%201696%20NurmelaEAR-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 9780816532131 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 The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 1696 17 December 2016 6 Fumihiko Usui Daisuke Kuroda Thomas G. Müller Sunao Hasegawa Masateru Ishiguro Takafumi Ootsubo Daisuke Ishihara Hirokazu Kataza Satoshi Takita Shinki Oyabu Munetaka Ueno Hideo Matsuhara Takashi Onaka October 2011 Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey Publications of the Astronomical Society of Japan 63 5 1117–1138 2011PASJ...63.1117U 10.1093/pasj/63.5.1117 (online, AcuA catalog p. 153) 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 C. R. Nugent A. Mainzer J. Masiero J. Bauer R. M. Cutri T. Grav E. Kramer S. Sonnett R. Stevenson E. L. Wright December 2015 NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos The Astrophysical Journal 814 2 13 2015ApJ...814..117N 10.1088/0004-637X/814/2/117 1509.02522 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 Robert D. Stephens Glenn Malcolm September 2007 Lightcurve Analysis of 1489 Attila and 1696 Nurmela http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2007MPBu...34...78S The Minor Planet Bulletin 34 3 78 1052-8091 2007MPBu...34...78S 17 December 2016 Adrian Galad Leonard Kornos June 2008 A Sample of Lightcurves from Modra http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008MPBu...35...78G The Minor Planet Bulletin 35 2 78–81 1052-8091 2008MPBu...35...78G 17 December 2016 Reddy, V. Sanchez, J. A. Bottke, W. F. Gaffey, M. J. Le Corre, L. Masiero, J. Mainzer, A. K. March 2013 Composition of (1696) Nurmela: The Second Largest Member of Baptistina Asteroid Family http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2013LPI....44.1093R 44th Lunar and Planetary Science Conference 44 1719 1093 2013LPI....44.1093R 10 November 2015 Stephens, Robert D. October 2017 Asteroids Observed from CS3: 2017 April - June http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2017MPBu...44..321S The Minor Planet Bulletin 44 4 321–323 1052-8091 2017MPBu...44..321S 19 April 2018 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 Geneve, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1696 1695 Walbeck 1696 1697 Koskenniemi 001696 Category:Discoveries by Yrjö Väisälä Category:Named minor planets 19390318