1721 Wells

Main-belt asteroid October 2019 yes 1721 Wells #D6D6D6 3 October 1953 Indiana University(Indiana Asteroid Program) Goethe Link Obs. (1721) Wells 1953 TD 31944 DA1958 QEA905 CG Herman Wells(Indiana University) main-belt(outer) 4 September 2017 (JD 2458000.5) 0 112.13 yr (40,957 days) 3.2969 AU 3.0049 AU 3.1509 AU 0.0463 5.59 yr (2,043 days) 101.64° 16.107° 317.29° 137.52° 43.576 0.166 km 0.045 0.005 10.9 1721 Wells, provisional designation 1953 TD 3, is a dark asteroid from the outer region of the asteroid belt, approximately 44 kilometers in diameter. It was discovered on 3 October 1953, by Indiana University's (IU) Indiana Asteroid Program at Goethe Link Observatory near Brooklyn, Indiana, United States. It was named after IU president and chancellor Herman B Wells. Orbit and classification Wells orbits the Sun in the outer main-belt at a distance of 3.0–3.3 AU once every 5 years and 7 months (2,043 days). Its orbit has an eccentricity of 0.05 and an inclination of 16° with respect to the ecliptic. First identified as A905 CG at Heidelberg in 1905, Wells first used observation was taken at Turku in 1944, extending the asteroid's observation arc by 9 years prior to its official discovery observation. Physical characteristics According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Wells measures 43.576 kilometers in diameter and its surface has an albedo of 0.045. It has an absolute magnitude of 10.9. As of 2017, Wells spectral type, rotation period and shape remain unknown. Naming This minor planet was named in honor of Herman B Wells (1902–2000) chancellor and president of IU. During this time, Wells fostered higher education nationally and internationally. The official 1721 naming citation was published by the Minor Planet Center on 15 June 1973 (M.P.C. 3508). References 30em 2017-03-30 last obs. JPL Small-Body Database Browser: 1721 Wells (1953 TD3) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001721 Jet Propulsion Laboratory 7 June 2017 Dictionary of Minor Planet Names – (1721) Wells Schmadel Lutz D. Springer Berlin Heidelberg 137 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1722 (1721) Wells 1721 Wells (1953 TD3) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1721 22 December 2016 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 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 22 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 1721 1720 Niels 1721 1722 Goffin 001721 001721 Category:Named minor planets 19531003