1378 Leonce

Main-belt asteroid October 2019 yes 1378 Leonce #D6D6D6 File:1378Leonce (Lightcurve Inversion).png Lightcurve-based 3D-model of Leonce F. Rigaux Uccle Obs. 21 February 1936 (1378) Leonce 1936 DB1958 FG1958 GY1962 KBA915 RCA915 WA Leonce Rigaux(discoverer's father) main-belt(inner)Nysa–Polana complex 4 September 2017 (JD 2458000.5) 0 101.54 yr (37,088 days) 2.7300 AU 2.0187 AU 2.3743 AU 0.1498 3.66 yr (1,336 days) 38.698° 0.2694 ms / day 3.5913° 43.568° 202.15° 14.94 3.81 km18.16 km (derived)18.18 1.4 km20.54 0.13 km21.228 0.070 km22.20 0.33 km22.456 0.170 km 4.3250 0.0002 h4.325 0.001 h4.32527 0.00005 h4.3586 0.0002 h 0.0348 0.00460.053 0.0020.061 0.0020.0706 (derived)0.0773 0.0130.10 0.05 C (assumed) 11.94 0.2212.1012.20 1378 Leonce, provisional designation 1936 DB, is a dark asteroid from the inner regions of the asteroid belt, approximately 19 kilometers in diameter. It was discovered on 21 February 1936, by Belgian astronomer Fernand Rigaux at the Royal Observatory of Belgium in Uccle, who named it after his father, Leonce Rigaux. Orbit and classification Leonce orbits the Sun in the inner main asteroid belt at a distance of 2.0–2.7 AU, once every 3 years and 8 months (1,336 days). Its orbit has an eccentricity of 0.15 and an inclination of 4° with respect to the ecliptic. It is a member of the Nysa–Polana complex, a collection of overlapping asteroid families in the inner main belt.23 The asteroid was first identified as 1915 RC at Heidelberg Observatory in September 1915. One week later, the body's observation arc begins at Bergedorf Observatory, more than 20 years prior to its official discovery observation at Uccle. Physical characteristics Leonce is an assumed carbonaceous C-type asteroid. Rotation period and poles In 2002, 2007 and 2017, three rotational light curves of Leonce were obtained from photometric observations by amateur astronomers René Roy, Laurent Bernasconi and Daniel Klinglesmith and colleagues at Etscorn Observatory (719), respectively. Analysis gave a well-defined light curve with a consolidated rotation period of 4.3250 hours and a brightness amplitude between 0.49 and 0.63 magnitude (U=3/3/3). In addition a modeled light curve, using photometric data from various sources, gave a period of 4.32527 hours, as well as two spin axes of (210.0°, −67.0°) and (46.0°, −77.0°) in ecliptic coordinates. Diameter and albedo According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Leonce measures between 14.94 and 22.456 kilometers in diameter and its surface has an albedo between 0.0348 and 0.10. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0706 and a diameter of 18.16 kilometers based on an absolute magnitude of 12.2. Naming This minor planet was named after Leonce Rigaux, father of the discoverer astronomer Fernand Rigaux. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 125). References 30em 2017-03-28 last obs. JPL Small-Body Database Browser: 1378 Leonce (1936 DB) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001378 https://web.archive.org/web/20200918045604/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001378 18 September 2020 Jet Propulsion Laboratory 31 October 2017 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 112 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1379 (1378) Leonce 1378 Leonce (1936 DB) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1378 31 October 2017 Asteroids and comets rotation curves – (1378) Leonce Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001378 31 October 2017 3 August 2003 https://web.archive.org/web/20030803183423/http://obswww.unige.ch/~behrend/page4cou.html#001378 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 31 October 2017 Asteroid 1378 Leonce – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1378+Leonce#Asteroid%201378%20LeonceEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 26 October 2019 https://web.archive.org/web/20201107132422/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1378+Leonce#Asteroid%201378%20LeonceEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 7 November 2020 dead 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 1378 31 October 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 31 October 2017 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 31 October 2017 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 free (online, AcuA catalog p. 153) E. F. Tedesco P. V. Noah M. Noah S. D. Price October 2004 IRAS Minor Planet Survey V6.0 https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab NASA Planetary Data System 12 IRAS-A-FPA-3-RDR-IMPS-V6.0 2004PDSS...12.....T 22 October 2019 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 J. Hanus M. Broz J. Durech B. D. Warner J. Brinsfield R. Durkee D. Higgins R. A. Koff J. Oey F. Pilcher R. Stephens L. P. Strabla Q. Ulisse R. Girelli November 2013 An anisotropic distribution of spin vectors in asteroid families http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2013A&A...559A.134H Astronomy and Astrophysics 559 19 2013A&A...559A.134H 10.1051/0004-6361/201321993 1309.4296 31 October 2017 Daniel A. III Klinglesmith Jesse Hanowell Ethan Risley Janek Turk Angelica Vargas Curtis Alan Warren October 2013 Inversion Model Candidates http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2013MPBu...40..190K The Minor Planet Bulletin 40 4 190–193 1052-8091 2013MPBu...40..190K 31 October 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 31 October 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 1378 1377 Roberbauxa 1378 1379 Lomonosowa 001378 Category:Discoveries by Fernand Rigaux Category:Named minor planets 19360221