16765 Agnesi

Main-belt asteroid October 2019 yes 16765 Agnesi #D6D6D6 16 October 1996 P. G. Comba Prescott Obs. (16765) Agnesi 1996 UA Maria Agnesi(Italian mathematician) main-beltEunomia 4 September 2017 (JD 2458000.5) 0 19.88 yr (7,261 days) 2.9139 AU 2.3361 AU 2.6250 AU 0.1101 4.25 yr (1,553 days) 4.2373° 0.2317 ms / day 12.266° 17.764° 314.93° 3.84 km (calculated)4.132 0.247 km 7.5458 0.0034 h 0.21 (assumed)0.2849 0.02500.285 0.025 S 13.913.30 0.0013.943 0.004 (R)14.39 16765 Agnesi (provisional designation 1996 UA) is a stony Eunomia asteroid from the middle region of the asteroid belt, approximately 4 kilometers in diameter. It was discovered on 16 October 1996, by Italian-American amateur astronomer Paul Comba at his private Prescott Observatory in Arizona, United States. The asteroid was named after Italian mathematician Maria Gaetana Agnesi. Orbit and classification Agnesi is a member of the Eunomia family, a large group of S-type asteroids and the most prominent family in the central main-belt. It orbits the Sun at a distance of 2.3–2.9 AU once every 4 years and 3 months (1,553 days). Its orbit has an eccentricity of 0.11 and an inclination of 12° with respect to the ecliptic. It was first observed by Haleakala–NEAT/GEODSS (566), extending the asteroid's observation arc by 32 days prior to its official discovery observation. Physical characteristics Diameter and albedo According to the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, Agnesi measures 4.1 kilometers in diameter and its surface has an albedo of 0.28, while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.21 – derived from 15 Eunomia, the family's largest member and namesake – and calculates a diameter of 3.8 kilometers. Lightcurves A rotational lightcurve of Agnesi was obtained from photometric observations taken by astronomers at the Palomar Transient Factory in September 2013. Lightcurve analysis gave a rotation period of 7.5458 hours with a brightness variation of 0.31 magnitude (U=2). Naming This minor planet was named in honor of Italian Maria Gaetana Agnesi (1718–1799), who was the first Western woman to write a widely translated mathematics handbook and the first woman appointed to a professorship at a university in 1750. The official naming citation was published by the Minor Planet Center on 9 January 2001 (M.P.C. 41941). References 30em 2016-08-01 last obs. JPL Small-Body Database Browser: 16765 Agnesi (1996 UA) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2016765 https://web.archive.org/web/20200820163408/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2016765 20 August 2020 Jet Propulsion Laboratory 26 June 2017 Dictionary of Minor Planet Names – (16765) Agnesi Schmadel Lutz D. Springer Berlin Heidelberg 840 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_9340 (16765) Agnesi 16765 Agnesi (1996 UA) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=16765 2 May 2016 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 2 May 2016 16765 2 May 2016 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 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...90M The Astrophysical Journal 741 2 25 2011ApJ...741...90M 10.1088/0004-637X/741/2/90 1109.6407 2 May 2016 6 Adam Waszczak Chan-Kao Chang Eran O. Ofek Russ Laher Frank Masci David Levitan Jason Surace Yu-Chi Cheng Wing-Huen Ip Daisuke Kinoshita George Helou Thomas A. Prince Shrinivas Kulkarni September 2015 Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W The Astronomical Journal 150 3 35 2015AJ....150...75W 10.1088/0004-6256/150/3/75 1504.04041 2 May 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 2 May 2016 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 3 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 (15001)-(20000) – Minor Planet Center 16765 16765 16766 Righi 016765 Category:Discoveries by Paul G. Comba Category:Named minor planets 19961016