1536 Pielinen

Stony Florian asteroid October 2019 yes 1536 Pielinen #D6D6D6 18 September 1939 Y. Väisälä Turku Observatory (1536) Pielinen 1939 SE1929 RZ1931 ED1934 CW1939 TP1939 UK1952 RWA903 SFA916 RA Pielinen (lake) main-beltFlora 4 September 2017 (JD 2458000.5) 0 113.68 yr (41,521 days) 2.6342 AU 1.7736 AU 2.2039 AU 0.1953 3.27 yr (1,195 days) 295.85° 0.3012 ms / day 1.5344° 195.69° 170.76° 7.38 1.62 km7.82 km (calculated)7.934 0.037 km7.975 0.109 km 66.1 0.1 h66.22 hLCDB-Pravec-201166.34 0.02 hLCDB-Stephens-201167.43 0.06 h 0.24 (assumed)0.253 0.0170.2557 0.06620.30 0.21 S 12.57 0.5212.612.7 1536 Pielinen (provisional designation 1939 SE) is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 7.8 kilometers in diameter. It was discovered on 18 September 1939, by Finnish astronomer Yrjö Väisälä at Turku Observatory, Southwest Finland. It was later named for Finnish lake Pielinen. Classification and orbit Pielinen is a member of the Flora family, a large group of stony S-type asteroids. It orbits the Sun in the inner main-belt at a distance of 1.8–2.6 AU once every 3 years and 3 months (1,195 days). Its orbit has an eccentricity of 0.20 and an inclination of 2° with respect to the ecliptic. Pielinen was first identified as A903 SF at Heidelberg in 1903, extending the body's observation arc by 36 years prior to its official discovery observation. Lightcurves From September to November 2011, four rotational lightcurves of Pielinen were obtained from photometric observations. One lightcurve analysis gave a rotation period of 66.2 hours,IMG-Light-Curve-Analysis which is significantly longer than for most minor planets, that spin every 2 to 20 hours around their axis. However, slow rotators have periods typically above 100 hours. Photometric observations were taken by Petr Pravec (66.22 hours, Δ0.85 mag, U=3),LCDB-Pravec-2011 Robert D. Stephens (66.34 hours, Δ0.80 mag, U=3-),LCDB-Stephens-2011 Giovanni Casalnuovo (66.1 hours, Δ0.75 mag, U=2+), and Silvano Casulli (67.43 hours, Δ0.81 mag, U=2). Diameter and albedo According to the space-based survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Pielinen measures between 7.38 and 7.975 kilometers in diameter and its surface has an albedo between 0.253 and 0.30. 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 7.82 kilometers, with an absolute magnitude of 12.7. Naming This minor planet is named after Pielinen, Finland's fourth largest lake in Finnish Karelia. The Koli National Park is located on its western shores. The official 1536 naming citation was published by the Minor Planet Center on 20 February 1976 (M.P.C. 3930). Notes LCDB-Pravec-2011 Pravec (2011) web: rotation period 66.22 hours with a brightness amplitude of 0.85 mag. Quality Code: 3. Summary figures for (1536) Pielinen at Collaborative Asteroid Lightcurve Link (CALL) IMG-Light-Curve-Analysis Lightcurve plot for (1536) Pielinen by Petr Pravec of the Ondrejov Asteroid Photometry Project source data) LCDB-Stephens-2011 Stephens (2011) web. Observations in September 2011, gave a rotation period of 66.34 0.02 hours with a brightness amplitude of 0.80 mag. Quality Code of 3-. Summary figures for (1536) Pielinen at Collaborative Asteroid Lightcurve Link (CALL) References 30em 2017-06-05 last obs. JPL Small-Body Database Browser: 1536 Pielinen (1939 SE) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001536 Jet Propulsion Laboratory 30 June 2017 Dictionary of Minor Planet Names – (1536) Pielinen Schmadel Lutz D. Springer Berlin Heidelberg 122 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1537 (1536) Pielinen 1536 Pielinen (1939 SE) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1536 30 December 2016 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 Asteroids and comets rotation curves – (1536) Pielinen Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001536 30 December 2016 1 April 2019 https://web.archive.org/web/20190401181659/http://obswww.unige.ch/~behrend/page4cou.html#001536 dead 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 30 December 2016 1536 30 December 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 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 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJ...814..117N The Astrophysical Journal 814 2 13 2015ApJ...814..117N 10.1088/0004-637X/814/2/117 1509.02522 30 December 2016 Casalnuovo, Giovanni Battista April 2016 Lightcurve Analysis for Nine Main Belt Asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016MPBu...43..112C The Minor Planet Bulletin 43 2 112–115 1052-8091 2016MPBu...43..112C 30 December 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 30 December 2016 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 1536 1535 Päijänne 1536 1537 Transylvania 001536 Category:Discoveries by Yrjö Väisälä Category:Named minor planets 19390918