1846 Bengt

Dark main-belt asteroid October 2019 yes 1846 Bengt #D6D6D6 24 September 1960 C. J. van HoutenI. van Houten-G.T. Gehrels Palomar Obs. (1846) Bengt 6553 P-L1951 CW 11957 YP Bengt Strömgren(Danish astronomer) main-belt(inner) 4 September 2017 (JD 2458000.5) 0 58.66 yr (21,424 days) 2.6708 AU 2.0063 AU 2.3386 AU 0.1421 3.58 yr (1,306 days) 256.07° 0.2756 ms / day 3.1843° 19.092° 75.087° 10.998 0.080 km 0.047 0.005 13.8 1846 Bengt, provisional designation 6553 P-L, is a dark asteroid from the inner regions of the asteroid belt, approximately 11 kilometers in diameter. Discovered by the Palomar–Leiden survey in 1960, it was named for Danish astronomer Bengt Strömgren. Discovery Bengt was discovered on 24 September 1960, by Dutch astronomer couple Ingrid and Cornelis van Houten in collaboration with Tom Gehrels, who took the photographic plates at Palomar Observatory in California. The survey designation "P-L" stands for Palomar–Leiden, named after Palomar Observatory and Leiden Observatory, which collaborated on the fruitful Palomar–Leiden survey in the 1960s. Gehrels used Palomar's Samuel Oschin telescope (also known as the 48-inch Schmidt Telescope), and shipped the photographic plates to Ingrid and Cornelis van Houten at Leiden Observatory where astrometry was carried out. The trio are credited with several thousand asteroid discoveries. The asteroid was first identified as 1951 CW 1 at McDonald Observatory in 1951. The observation arc starts 3 years prior to its official discovery observation, with its first used identification 1957 YP made at Goethe Link Observatory in 1957. Orbit and classification Bengt orbits the Sun in the inner main-belt at a distance of 2.0–2.7 AU once every 3 years and 7 months (1,306 days). Its orbit has an eccentricity of 0.14 and an inclination of 3° with respect to the ecliptic. Physical characteristics Based on preliminary results by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Bengt measures 10.998 kilometers in diameter and its surface has an albedo of 0.047, which is typical for carbonaceous C-type asteroids. As of 2017, no rotational lightcurve has been obtained. Naming This minor planet was named after renowned Danish astronomer Bengt Strömgren (1908–1987), on the occasion of his 70th birthday. He was an authority in the field of stellar structure and stellar evolution, director of the Yerkes Observatory from 1951 to 1957, and president of the International Astronomical Union (1970–1973). The official 1846 naming citation was published by the Minor Planet Center on 1 November 1978 (M.P.C. 4547). References 30em 2016-08-23 last obs. JPL Small-Body Database Browser: 1846 Bengt (6553 P-L) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001846 Jet Propulsion Laboratory 8 June 2017 Dictionary of Minor Planet Names – (1846) Bengt Schmadel Lutz D. Springer Berlin Heidelberg 148 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1847 (1846) Bengt 1846 Bengt (6553 P-L) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1846 29 March 2017 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) 2009 https://archive.org/details/dictionaryminorp2008schm limited Appendix – Publication Dates of the MPCs Schmadel Lutz D. Springer Berlin Heidelberg 221 978-3-642-01964-7 10.1007/978-3-642-01965-4 Minor Planet Discoverers Minor Planet Center https://www.minorplanetcenter.net/iau/lists/MPDiscsNum.html 24 April 2016 29 March 2017 6 Joseph R. Masiero A. K. Mainzer T. Grav J. M. Bauer R. M. Cutri J. Dailey P. R. M. Eisenhardt R. S. McMillan T. B. Spahr M. F. Skrutskie D. Tholen R. G. Walker E. L. Wright E. DeBaun D. Elsbury T. IV Gautier S. Gomillion A. Wilkins November 2011 Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M The Astrophysical Journal 741 2 20 2011ApJ...741...68M 10.1088/0004-637X/741/2/68 1109.4096 29 March 2017 1846 29 March 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 1846 1845 Helewalda 1846 1847 Stobbe 001846 6553 Category:Discoveries by Cornelis Johannes van Houten Category:Discoveries by Ingrid van Houten-Groeneveld Category:Discoveries by Tom Gehrels Category:Named minor planets 19600924