1295 Deflotte

Asteroid October 2019 yes 1295 Deflotte #D6D6D6 L. Boyer Algiers Obs. 25 November 1933 (1295) Deflotte 1933 WD1932 RE1938 QF1939 VN1941 CE1947 CA1951 TV1963 TU Deflotte(discoverer's nephew) main-belt(outer) 4 September 2017 (JD 2458000.5) 0 83.61 yr (30,538 days) 3.8043 AU 2.9788 AU 3.3916 AU 0.1217 6.25 yr (2,281 days) 131.90° 0.1578 ms / day 2.8858° 185.08° 275.34° 45.67 1.36 km47.407 0.221 km47.99 km (derived)48.03 1.8 km48.68 16.05 km49.07 18.00 km51.048 0.525 km 14.64 0.05 h 0.0390 0.00790.04 0.020.04 0.030.0402 (derived)0.0441 0.0040.046 0.0140.049 0.003 C 10.6010.7010.84 0.2010.93 1295 Deflotte, provisional designation 1933 WD, is a carbonaceous asteroid from the outer regions of the asteroid belt, approximately 48 kilometers in diameter. It was discovered on 25 November 1933, by French astronomer Louis Boyer at the Algiers Observatory in Algeria, North Africa. The asteroid was named after the discoverer's nephew. Orbit and classification Deflotte is a non-family asteroid from the main belt's background population. It orbits the Sun in the outer main-belt at a distance of 3.0–3.8 AU once every 6 years and 3 months (2,281 days). Its orbit has an eccentricity of 0.12 and an inclination of 3° with respect to the ecliptic. The asteroid was first identified as 1932 RE at Heidelberg Observatory in September 1932. The body's observation arc begins with its official discovery observation at Algiers in November 1933. Physical characteristics Deflotte is an assumed carbonaceous C-type asteroid. Rotation period In September 2007, a rotational lightcurve of Deflotte was obtained from photometric observations by French amateur astronomer René Roy. Lightcurve analysis gave a rotation period of 14.64 hours with a brightness amplitude of 0.16 magnitude (U=2). 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, Deflotte measures between 45.67 and 51.048 kilometers in diameter and its surface has an albedo between 0.0390 and 0.049. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0402 and a diameter of 47.99 kilometers based on an absolute magnitude of 10.7. Naming This minor planet was named after Louis Boyer's nephew. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 118). References 30em 2017-07-05 last obs. JPL Small-Body Database Browser: 1295 Deflotte (1933 WD) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001295 Jet Propulsion Laboratory 14 September 2017 Dictionary of Minor Planet Names – (1295) Deflotte Schmadel Lutz D. Springer Berlin Heidelberg 106 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1296 (1295) Deflotte 1295 Deflotte (1933 WD) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1295 14 September 2017 Asteroids and comets rotation curves – (1295) Deflotte Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001295 14 September 2017 3 August 2003 https://web.archive.org/web/20030803183423/http://obswww.unige.ch/~behrend/page4cou.html#001295 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 119293330 14 September 2017 1295 14 September 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 9341381 14 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 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) 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 35447010 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 14 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/20160729213840/http://obswww.unige.ch/~behrend/page_cou.html 29 July 2016 – Observatoire de Genève, Raoul Behrend [httpw://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center 1295 1294 Antwerpia 1295 1296 Andrée 001295 Category:Discoveries by Louis Boyer (astronomer) Category:Named minor planets 19331125