1365 Henyey

Main-belt asteroid October 2019 yes 1365 Henyey #D6D6D6 9 September 1928 M. F. Wolf Heidelberg Obs. (1365) Henyey 1928 RK1932 WL1941 ME1973 YG 41984 BAA907 GK Louis Henyey(American astronomer) main-beltFlora 4 September 2017 (JD 2458000.5) 0 109.96 yr (40,164 days) 2.5248 AU 1.9723 AU 2.2486 AU 0.1229 3.37 yr (1,232 days) 238.80° 0.2923 ms / day 5.0758° 258.55° 337.32° 10.31 1.91 km10.958 0.369 km11.31 km (calculated) 18.986 0.002 h32.2 0.2 h 0.24 (assumed)0.26 0.130.280 0.041 S 11.8011.912.01 0.2612.10 1365 Henyey, provisional designation 1928 RK, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 11 kilometers in diameter. It was discovered by German astronomer Max Wolf at Heidelberg Observatory in southern Germany on 9 September 1928, and named for American astronomer Louis Henyey. Orbit and classification Henyey is a member of the Flora family, a large population of stony S-type asteroids in the inner main-belt. It orbits the Sun in the inner main-belt at a distance of 2.0–2.5 AU once every 3 years and 4 months (1,232 days). Its orbit has an eccentricity of 0.12 and an inclination of 5° with respect to the ecliptic. It was first Identified as A907 GK at Heidelberg in 1907. The body's observation arc begins with its official discovery observation in 1928. Physical characteristics Rotation period In August 2012, a first rotational lightcurve of Henyey was obtained from photometric observations by Daniel Klinglesmith at Etscorn Campus Observatory (719) in New Mexico. It gave a rotation period of 18.986 hours with a brightness variation of 0.23 magnitude (U=2). In November 2016, a divergent period solution of 32.2 hours with a change in brightness of 0.32 magnitude was found by French amateur astronomer René Roy (U=2). Diameter and albedo According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Henyey measures 10.31 and 10.96 kilometers in diameter and its surface has an albedo of 0.26 and 0.28. respectively. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the largest member and namesake of the family – and calculates a diameter of 11.31 kilometers with an absolute magnitude of 11.9. Naming Based on a suggestion by William Westbrooke, this minor planet was named after American astronomer Louis Henyey (1910–1970), known for his contributions in the field of stellar structure and stellar evolution. The lunar crater Henyey is also named in his honour. The official 1365 naming citation was published by the Minor Planet Center on 20 February 1971 (M.P.C. 3143). Further reading Reddy, V. Emery, J. P. Gaffey, M. J. Bottke, W. F. Cramer, A. Kelley, M. S. January 2009 Composition of 298 Baptistina: Implications for the K/T impactor link Meteoritics & Planetary Science 44 12 1917–1927 2009M&PS...44.1917R 10.1111/j.1945-5100.2009.tb02001.x free 6 Reddy, Vishnu Carvano, Jorge M. Lazzaro, Daniela Michtchenko, Tatiana A. Gaffey, Michael J. Kelley, Michael S. Mothé-Diniz, Thais Alvarez-Candal, Alvaro Moskovitz, Nicholas A. Cloutis, Edward A. Ryan, Erin L. November 2011 Mineralogical characterization of Baptistina Asteroid Family: Implications for K/T impactor source http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011Icar..216..184R Icarus 216 1 184–197 2011Icar..216..184R 10.1016/j.icarus.2011.08.027 1110.3414 118377061 22 November 2015 References 30em 2017-03-21 last obs. JPL Small-Body Database Browser: 1365 Henyey (1928 RK) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001365 Jet Propulsion Laboratory 25 July 2017 Dictionary of Minor Planet Names – (1365) Henyey Schmadel Lutz D. Springer Berlin Heidelberg 111 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1366 (1365) Henyey 1365 Henyey (1928 RK) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1365 12 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 https://cds.cern.ch/record/1339661 Asteroids and comets rotation curves – (1365) Henyey Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001365 12 January 2017 3 August 2003 https://web.archive.org/web/20030803183423/http://obswww.unige.ch/~behrend/page4cou.html#001365 dead 1365 12 January 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 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 12 January 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 Daniel A. III Klinglesmith Jesse Hanowell Ethan Risley Janek Turk Angelica Vargas Curtis Alan Warren April 2013 Asteroid Synodic Periods from Etscorn Campus Observatory http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2013MPBu...40...65K The Minor Planet Bulletin 40 2 65–67 1052-8091 2013MPBu...40...65K 12 January 2017 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 12 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 1365 1364 Safara 1365 1366 Piccolo 001365 Category:Discoveries by Max Wolf Category:Named minor planets 19280909