1261 Legia

Dark Themistian asteroid from the outer regions of the asteroid belt October 2019 yes 1261 Legia #D6D6D6 E. Delporte Uccle Obs. 23 March 1933 (1261) Legia 1933 FB1938 CS1938 DH1944 FD1966 DG ' l iː dʒ i ə Latin name for Liège(Belgian city) main-belt(outer)Themisbackground 4 September 2017 (JD 2458000.5) 0 84.28 yr (30,785 days) 3.6992 AU 2.5758 AU 3.1375 AU 0.1790 5.56 yr (2,030 days) 57.530° 0.1773 ms / day 2.4274° 67.282° 104.64° 31.20 km (derived)31.26 11.50 km31.28 1.3 km32.13 0.66 km32.576 0.126 km35.324 0.345 km36.56 0.35 km 8.693 0.007 h 0.048 0.0090.0564 0.01270.06 0.050.0601 (derived)0.067 0.0040.070 0.0030.0719 0.006 PS (assumed) 11.0011.1011.12 0.7211.211.29 1261 Legia, provisional designation 1933 FB, is a dark Themistian asteroid from the outer regions of the asteroid belt, approximately 32 kilometers in diameter. It was discovered on 23 March 1933, by astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle. The asteroid was named for the Belgian city of Liège (Luke). Orbit and classification Legia is a Themistian asteroid that belongs to the Themis family (602), a very large family of carbonaceous asteroids, named after 24 Themis. It is, however, a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. It orbits the Sun in the outer asteroid belt at a distance of 2.6–3.7 AU once every 5 years and 7 months (2,030 days; semi-major axis of 3.14 AU). Its orbit has an eccentricity of 0.18 and an inclination of 2° with respect to the ecliptic. The body's observation arc begins at Uccle in March 1933, five days after its official discovery observation. Physical characteristics Legia has been characterized as a primitive and reddish P-type asteroid by the Wide-field Infrared Survey Explorer (WISE). Rotation period In January 2005, a rotational lightcurve of Legia was obtained from photometric observations by French amateur astronomer Laurent Bernasconi. Lightcurve analysis gave a rotation period of 8.693 hours with a brightness amplitude of 0.13 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 WISE telescope, Legia measures between 31.26 and 36.56 kilometers in diameter and its surface has an albedo between 0.048 and 0.0719. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0601 and a diameter of 31.20 kilometers based on an absolute magnitude of 11.2. Naming This minor planet was named "Legia", the Latin name of the Belgian city of Liège (Luik). The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 116). References 30em 2017-07-05 last obs. JPL Small-Body Database Browser: 1261 Legia (1933 FB) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001261 Jet Propulsion Laboratory 28 November 2017 Dictionary of Minor Planet Names – (1261) Legia Schmadel Lutz D. Springer Berlin Heidelberg 104 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1262 (1261) Legia 1261 Legia (1933 FB) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1261 28 November 2017 Asteroids and comets rotation curves – (1261) Legia Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page3cou.html#001261 28 November 2017 23 April 2019 https://web.archive.org/web/20190423121547/http://obswww.unige.ch/~behrend/page3cou.html#001261 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 The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 119293330 Asteroid 1261 Legia – Proper Elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1261 29 October 2019 1261 28 November 2017 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 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 28 November 2017 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 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) 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 28 November 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 1261 1260 Walhalla 1261 1262 Sniadeckia 001261 Category:Discoveries by Eugène Joseph Delporte Category:Named minor planets 19330323