1052 Belgica

Main-belt asteroid July 2020 yes 1052 Belgica #D6D6D6 15 November 1925 E. Delporte Uccle Obs. (1052) Belgica ' b E l dZ ᵻ k @Belgic 1925 VD1965 UO 1A908 TB Belgium (country) main-beltFlora 16 February 2017 (JD 2457800.5) 0 108.27 yr (39,545 days) 2.5565 AU 1.9166 AU 2.2366 AU 0.1431 3.34 yr (1,222 days) 120.60° 0.2947 ms / day 4.6949° 99.631° 297.54° 1 9.785 0.123 km10.406 0.077 km10.94 km (derived)11 2 km 2.70933 0.0003 h2.7097 0.0001 h2.7097 0.0001 h 0.20 (assumed)0.2734 0.07360.301 0.028 B–V = 0.900U–B = 0.540S (Tholen)S (SMASS)S 11.9712.09 0.2512.17 0.05 1052 Belgica, provisional designation 1925 VD, is a binary Florian asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 15 November 1925, by Belgian astronomer Eugène Delporte at Uccle Observatory in Belgium. It was the first minor planet discovered at Uccle Observatory, after which the minor planet 1276 Ucclia was named. 1052 is named after the Western European state of Belgium. Classification and orbit Belgica is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun at a distance of 1.9–2.6 AU once every 3 years and 4 months (1,222 days). Its orbit has an eccentricity of 0.14 and an inclination of 5° with respect to the ecliptic. Belgica was first identified as A908 TB at Heidelberg in 1908. The body's observation arc begins with its first used observation taken at Uccle/Bergedorf in 1933, or 8 years after its official discovery at Uccle. Physical characteristics In both the Tholen and SMASS taxonomy, Belgica is classified as a common stony S-type asteroid. Rotation period Between December 2012, and January 2013, photometric observations of Belgica were taken at several observatories in Italy, the Czech Republic, Spain and the United States by astronomers Luis Martinez, Lorenzo Franco, Andrea Ferrero, Petr Pravec, and Stefano Padovan. They gave three concurring lightcurves with a rotation period of 2.709 hours and a brightness variation of 0.08 to 0.10 magnitude, indicating a nearly spheroidal shape for the asteroid's body (U=2/3/n.a.). Satellite The photometric observations also revealed, that Belgica is a binary system with an asteroid moon, approximately 36% the diameter of its primary, orbiting it every 47.26 0.02 hours. Johnston's archive derives a diameter of 3.53 kilometers and estimates a semi-major axis of 34 kilometer for the moon. Diameter and albedo According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Belgica measures 9.78 and 10.406 kilometers in diameter and its surface has an albedo of 0.301 and 0.273, respectively, while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and derives a diameter of 10.94 kilometers with an absolute magnitude of 12.17. This agrees with the estimated diameter of 11 2 kilometers by Franco et al. Naming This minor planet was named in honor of the state of Belgium. The name "Belgica" was suggested during the height of World War I by American astronomer Joel Hastings Metcalf, but the Director of the German Astronomisches Rechen-Institut in Berlin, Fritz Cohn, rejected the proposal based on political considerations, as Belgium was occupied by German troops at the time. In his Dictionary of Minor Planets Names, astronomer Lutz Schmadel described this piece of history involving minor planet names in detail. Naming citation was first mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 100). References 30em 2017-01-09 last obs. JPL Small-Body Database Browser: 1052 Belgica (1925 VD) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001052 Jet Propulsion Laboratory 27 January 2017 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 90 2003 978-3-540-29925-7 10.1007/978-3-540-29925-7_1053 (1052) Belgica https://books.google.com/books?id=aeAg1X7afOoC&pg=PA89 1052 Belgica (1925 VD) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1052 27 January 2017 Asteroids and comets rotation curves – (1052) Belgica Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page3cou.html#001052 27 January 2017 3 December 2002 https://web.archive.org/web/20021203214643/http://obswww.unige.ch/~behrend/page3cou.html#001052 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 27 January 2017 Robert Johnston (1052) Belgica johnstonsarchive.net 21 September 2014 http://www.johnstonsarchive.net/astro/astmoons/am-01052.html 10 April 2017 1052 27 January 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 L. Franco P. Pravec A. Ferrero L. Martinez January 2013 (1052) Belgica http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2013CBET.3372....1F Central Bureau Electronic Telegrams 3372 1 2013CBET.3372....1F 27 January 2017 Lorenzo Franco Andrea Ferrero Luis Martinez Petr Pravec Stefano Padovan July 2013 Binary Nature for the Asteroid 1052 Belgica http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2013MPBu...40..151F The Minor Planet Bulletin 40 3 151–153 1052-8091 2013MPBu...40..151F 27 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 27 January 2017 External links Asteroids with Satellites, Robert Johnston, johnstonsarchive.net 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 1052 1051 Merope 1052 1053 Vigdis 001052 Category:Discoveries by Eugène Joseph Delporte Category:Named minor planets 001052 001052 001052 19251115