1763 Williams

Main-belt asteroid October 2019 yes 1763 Williams #D6D6D6 Indiana University(Indiana Asteroid Program) Goethe Link Obs. 13 October 1953 (1763) Williams 1953 TN 21939 EO1953 VJ1966 TN Kenneth P. Williams(professor of mathematics at IU) main-beltFlorabackground 4 September 2017 (JD 2458000.5) 0 63.73 yr (23,276 days) 2.6340 AU 1.7436 AU 2.1888 AU 0.2034 3.24 yr (1,183 days) 297.61° 0.3044 ms / day 4.2352° 304.47° 28.831° 6.38 1.47 km6.982 0.183 km7.47 km (calculated) 8 h36 hlcdb-Pravec-2008 0.24 (assumed)0.32 0.160.330 0.0860.3305 0.0865 S 12.612.68 0.2612.80 1763 Williams, provisional designation 1953 TN 2, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 13 October 1953, by astronomers of the Indiana Asteroid Program at Goethe Link Observatory in Indiana, United States. The asteroid was named after Kenneth P. Williams, professor of mathematics at Indiana University. Orbit and classification Based on its osculating Keplerian orbital elements, Williams qualifies as a member of the Flora family (402), a giant asteroid family and the largest family of stony asteroids in the main-belt (according to Zappalà but not Nesvorý). However, analysis using proper orbital elements in a hierarchical clustering method showed that Williams is a background asteroid, not belonging to any known family (Nesvorý, Milani and Knežević). The asteroid orbits the Sun in the inner main-belt at a distance of 1.7–2.6 AU once every 3 years and 3 months (1,183 days). Its orbit has an eccentricity of 0.20 and an inclination of 4° with respect to the ecliptic. The asteroid was first identified as 1939 EO at Nice Observatory in March 1939. The body's observation arc begins with its official discovery observation in October 1953. Physical characteristics Williams is an assumed S-type asteroid. Rotation period In October 2008, a rotational lightcurve of Williams was obtained from photometric observations by Petr Pravec at Ondřejov Observatory in the Czech Republic. Lightcurve analysis gave a rotation period of at least 36 hours with a brightness amplitude of more than 0.30 magnitude (U=2).lcdb-Pravec-2008lightcurve-plot Another observation by Pierre Antonini gave a period of 8 hours (U=1+). Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Williams measures 6.38 and 6.982 kilometers in diameter and its surface has an albedo of 0.32 and 0.3305, respectively. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the Flora family's largest member and namesake – and calculates a diameter of 7.47 kilometers based on an absolute magnitude of 12.8. Naming This minor planet was named in honor of Kenneth P. Williams (1887–1958), long-time professor of mathematics at Indiana University. He was known for his textbook, the calculation of the orbits of asteroids and comets, and his detailed analysis of the transits of Mercury from 1723 to 1927. He also wrote Lincoln Finds a General, a five volume book about the American Civil War. The name was proposed by Frank K. Edmondson, who initiated the Indiana Asteroid Program. The official 1763 naming citation was published by the Minor Planet Center on 20 February 1971 (M.P.C. 3143). Notes lcdb-Pravec-2008 Pravec (2008) web: rotation period of at least 36 hours with a brightness amplitude of greater than 0.30 mag. Quality Code of 2. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) lightcurve-plot Lightcurve plot for (1763) Williams with a period of 90 hours (P > 36 h and A > 0.3 mag). Summary figures at website of the Ondrejov Asteroid Photometry Project References 30em 2017-07-05 last obs. JPL Small-Body Database Browser: 1763 Williams (1953 TN2) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001763 Jet Propulsion Laboratory 6 September 2017 Dictionary of Minor Planet Names – (1763) Williams Schmadel Lutz D. Springer Berlin Heidelberg 140–141 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1764 (1763) Williams 1763 Williams (1953 TN2) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1763 6 September 2017 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) 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 Asteroids and comets rotation curves – (1763) Williams Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001763 6 September 2017 1 April 2019 https://web.archive.org/web/20190401181659/http://obswww.unige.ch/~behrend/page4cou.html#001763 dead 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 6 September 2017 Asteroid 1763 Williams – Asteroid Dynamical Families V4.1 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1763+Williams#Asteroid%201763%20WilliamsEAR-A-5-DDR-FAMILY-V4.1 31 October 2019 https://web.archive.org/web/20201107194620/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1763+Williams#Asteroid%201763%20WilliamsEAR-A-5-DDR-FAMILY-V4.1 7 November 2020 dead Asteroid 1763 Williams – Proper Elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1763 31 October 2019 1763 6 September 2017 6 C. R. Nugent A. Mainzer J. Masiero J. Bauer R. M. Cutri T. Grav E. Kramer S. Sonnett R. Stevenson E. L. Wright December 2015 NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJ...814..117N The Astrophysical Journal 814 2 13 2015ApJ...814..117N 10.1088/0004-637X/814/2/117 1509.02522 6 September 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 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 6 September 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 1763 1762 Russell 1763 1764 Cogshall 001763 001763 Category:Named minor planets 19531013