1274 Delportia

Minor planet October 2019 yes 1274 Delportia #D6D6D6 Орбита астероида 1274.png Orbital diagram 28 November 1932 E. Delporte Uccle Obs. (1274) Delportia 1932 WC1926 AA1928 RX1934 JDA918 RA Eugène Delporte(Belgian astronomer) main-beltFlora 4 September 2017 (JD 2458000.5) 0 98.84 yr (36,101 days) 2.4813 AU 1.9772 AU 2.2292 AU 0.1131 3.33 yr (1,216 days) 33.180° 0.2961 ms / day 4.3970° 327.09° 244.65° 9.611 0.121 km10.384 0.048 km12.85 km (calculated)12.95 0.22 km 5.5 0.07 h5.615 0.001 hLCDB-Sheridan-20115.6204 0.0040 h 0.20 (assumed)0.200 0.0080.3104 0.03400.461 0.057 Tholen = SSB–V = 0.895U–B = 0.525 11.57 0.4811.8211.940 0.001 (R) 1274 Delportia, provisional designation 1932 WC, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 28 November 1932, by Belgian astronomer Eugène Delporte at Uccle Observatory in Belgium. It was named after the discoverer himself. Orbit and classification Delportia is a stony S-type asteroid on the Tholen taxonomic scheme. As a member of the Flora family, one of the largest families of the 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 (1,216 days). Its orbit has an eccentricity of 0.11 and an inclination of 4° with respect to the ecliptic. It was first identified as A918 RA at Heidelberg Observatory in 1918. The body's observation arc begins 6 years prior to its official discovery observation at Uccle, when it was identified as 1926 AA at Heidelberg in 1926. Physical characteristics Rotation period A rotational light curve of Delportia was obtained by American astronomer Edwin E. Sheridan in March 2007. Light curve analysis gave a well-defined rotation period of 5.615 hours with a brightness variation of 0.05 magnitude (U=3),LCDB-Sheridan-2011 superseding a period of 5.5 hours with an amplitude of 0.09 magnitude obtained by French amateur astronomer René Roy in December 2005 (U=2). In February 2010, photometric observations at the Palomar Transient Factory gave a period of 5.6204 hours and an amplitude of 0.26 magnitude (U=2). Diameter and albedo According to the surveys carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, and the Japanese Akari satellite, Delportia measures 9.61 and 12.95 kilometers in diameter, and its surface has an albedo of 0.46 and 0.20, respectively. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 12.85 kilometers using an absolute magnitude of 11.82. Naming Based on a suggestion by Gustav Stracke, this minor planet was named for its discoverer, Eugène Delporte (1882–1955), prolific discoverer of minor planets, astronomer and director at the discovering Uccle Observatory during 1936–1947. The lunar crater Delporte is also named in his honor. The official naming citation was first mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 117). Notes LCDB-Sheridan-2011 Sheridan (2011) web: rotation period 5.615 0.001 hours with a brightness amplitude of 0.05 magnitude and a Quality Code of 3. Summary figures for (1274) Delportia at Collaborative Asteroid Lightcurve Link (CALL) References 30em 2017-07-05 last obs. JPL Small-Body Database Browser: 1274 Delportia (1932 WC) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001274 Jet Propulsion Laboratory 26 July 2017 Dictionary of Minor Planet Names – (1274) Delportia Schmadel Lutz D. Springer Berlin Heidelberg 105 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1275 (1274) Delportia 1274 Delportia (1932 WC) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1274 23 January 2017 Asteroids and comets rotation curves – (1274) Delportia Behrend Raoul Geneva Observatory https://obswww.unige.ch/~behrend/page3cou.html#001274 23 January 2017 https://web.archive.org/web/20200123022615/https://obswww.unige.ch/~behrend/page3cou.html#001274 23 January 2020 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 23 January 2017 1274 23 January 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 (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 Adam Waszczak Chan-Kao Chang Eran O. Ofek Russ Laher Frank Masci David Levitan Jason Surace Yu-Chi Cheng Wing-Huen Ip Daisuke Kinoshita George Helou Thomas A. Prince Shrinivas Kulkarni September 2015 Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W The Astronomical Journal 150 3 35 2015AJ....150...75W 10.1088/0004-6256/150/3/75 1504.04041 23 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 23 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 1274 1273 Helma 1274 1275 Cimbria 001274 Category:Discoveries by Eugène Joseph Delporte Category:Named minor planets 001274 19321128