1663 van den Bos

Slow-rotating main-belt asteroid October 2019 yes 1663 van den Bos #D6D6D6 001663-asteroid shape model (1663) van den Bos.png van den Bos modeled from its lightcurve 4 August 1926 H. E. Wood Johannesburg Obs. (1663) van den Bos 1926 PE1928 DD1936 OM1948 BE1948 EG 11949 KE1950 XD1963 SC Willem van den Bos(astronomer) main-beltFlora 4 September 2017 (JD 2458000.5) 0 88.62 yr (32,370 days) 2.6437 AU 1.8357 AU 2.2397 AU 0.1804 3.35 yr (1,224 days) 33.128° 0.2941 ms / day 5.3617° 83.196° 275.24° 7.58 0.67 km11.697 0.048 km12.25 km (derived)13.537 0.339 km 155 5 h (wrong)740 10 h 0.1708 0.01780.184 0.0250.2045 (derived)0.255 0.0220.406 0.074 S 11.8011.86 0.2811.912.2 1663 van den Bos, provisional designation 1926 PE, is a stony Florian asteroid and an exceptionally slow rotator from the inner regions of the asteroid belt, approximately 12 kilometers in diameter. It was discovered on 4 August 1926, by English astronomer Harry Edwin Wood at Johannesburg Observatory in South Africa. It was later named after astronomer Willem Hendrik van den Bos. Orbit and classification The S-type asteroid is a member of the Flora family, a large group of stony asteroids in the main-belt. It orbits the Sun at a distance of 1.8–2.6 AU once every 3 years and 4 months (1,224 days). Its orbit has an eccentricity of 0.18 and an inclination of 5° with respect to the ecliptic. In March 2082, van den Bos will pass 29 Amphitrite at a distance of 0.0065 AU km on off 3.December 2016 The body's observation arc begins with a post-recovery observation taken at Johannesburg in 1936, when it was also identified as 1936 OM, which is a full decade after its official discovery observation from 1926. Physical characteristics Slow rotator In October 2010, a rotational lightcurve of van den Bos was obtained from photometric observations by astronomers Robert Stephens and David Higgins. It gave a rotation period of 740 hours with a brightness variation of 0.80 magnitude (U=3-). It is one of the slowest rotating minor planets (see list) and a suspected tumbler, that has a non-principal axis rotation. At the same time, photometric observations at the Shadowbox Observatory gave an alternative, yet ambiguous period of 155 hours with an amplitude of 0.5 magnitude (U=1). Diameter and albedo According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, van den Bos measures between 7.58 and 13.54 kilometers in diameter, and its surface has an albedo between 0.171 and 0.255. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.2045 and a diameter of 12.25 kilometers using an absolute magnitude of 11.9. Naming This minor planet was named in honor of Dutch-born, South African astronomer Willem Hendrik van den Bos (1896–1974), former director of the Union Observatory (1941–1956) and president of the Astronomical Society of South Africa (1943–1955). He made visual micrometric observations and discovered thousands of double stars. The official 1663 naming citation was published by the Minor Planet Center on 1 July 1972 (M.P.C. 3297). References 30em 2016-10-09 last obs. JPL Small-Body Database Browser: 1663 van den Bos (1926 PE) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001663 Jet Propulsion Laboratory 6 June 2017 Dictionary of Minor Planet Names – (1663) van den Bos Schmadel Lutz D. Springer Berlin Heidelberg 132 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1664 (1663) van den Bos 1663 van den Bos (1926 PE) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1663 23 December 2016 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) Appendix – Publication Dates of the MPCs Schmadel Lutz D. 2009 Springer Berlin Heidelberg 221 978-3-642-01964-7 10.1007/978-3-642-01965-4 2009dmpn.book.....S https://cds.cern.ch/record/1339661 1663 23 December 2016 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 118700974 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 23 December 2016 Robert D. Stephens D. Higgins April 2011 The Lightcurve for the Long-period Asteroid 1663 van den Bos http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011MPBu...38...72S The Minor Planet Bulletin 38 2 72 1052-8091 2011MPBu...38...72S 23 December 2016 Ruthroff, John C. April 2011 Lightcurve Analysis of Eight Main-belt Asteroids and a Revised Period for 185 Eunike http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011MPBu...38...86R The Minor Planet Bulletin 38 2 86–88 1052-8091 2011MPBu...38...86R 23 December 2016 Stephens, Robert D. July 2011 Asteroids Observed from GMARS and Santana Observatories: 2011 January–March http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011MPBu...38..165S The Minor Planet Bulletin 38 3 165–166 1052-8091 2011MPBu...38..165S 23 December 2016 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 23 December 2016 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 23 December 2016 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/20241208174218/http://obswww.unige.ch/~behrend/page_cou.html 8 December 2024 – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1663 1662 Hoffmann 1663 1664 Felix 001663 Category:Discoveries by Harry Edwin Wood Category:Named minor planets 001663 19260804