1822 Waterman

Stony main-belt asteroid October 2019 yes 1822 Waterman #D6D6D6 25 July 1950 Indiana University(Indiana Asteroid Program) Goethe Link Obs. (1822) Waterman 1950 OO1943 EB1953 MA1963 TT Alan T. Waterman(American physicist) main-belt(inner) 4 September 2017 (JD 2458000.5) 0 66.64 yr (24,342 days) 2.5023 AU 1.8378 AU 2.1700 AU 0.1531 3.20 yr (1,168 days) 45.052° 0.9567° 221.25° 30.351° 6.054 0.0986.515 0.060 km7.46 km (calculated) 7.581 0.002 h 0.20 (assumed)0.2639 0.06590.325 0.046 S 13.013.114.04 0.51 1822 Waterman, provisional designation 1950 OO, is a stony asteroid from the inner regions of the asteroid belt, approximately 6.5 kilometers in diameter. It was discovered on 25 July 1950, by Indiana University's Indiana Asteroid Program at its Goethe Link Observatory near Brooklyn, Indiana, United States. The asteroid was named after American physicist Alan T. Waterman. Orbit and classification Waterman is a S-type asteroid. It orbits the Sun in the inner main-belt at a distance of 1.8–2.5 AU once every 3 years and 2 months (1,168 days). Its orbit has an eccentricity of 0.15 and an inclination of 1° with respect to the ecliptic. The body's observation arc begins with its official discovery observation, as its first identification, 1943 EB, made at the German Sonneberg Observatory in 1943, remained unused. Physical characteristics Rotation period In January 2013, a rotational lightcurve of Waterman was obtained from photometric observation taken at the U.S Etscorn Observatory in New Mexico. It gave a well-defined rotation period of 7.581 hours with a brightness variation of 0.51 magnitude (U=3). Diameter and albedo According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Waterman measures between 6.06 and 6.52 kilometers in diameter, and its surface has an albedo between 0.264 and 0.325. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 7.46 kilometers with an absolute magnitude of 13.1. Naming This minor planet was named in honor of American physicist Alan Tower Waterman (1892–1967), who was the first director of the U.S. National Science Foundation. He went to Washington to serve with OSRD (1941–45), ONR (1946–51), and NSF (1951–63), after being an academic physicist for 25 years. Waterman was awarded the Karl Taylor Compton Gold Medal for distinguished statesmanship in science, the Public Welfare Medal and the Presidential Medal of Freedom. The official 1822 naming citation was published by the Minor Planet Center on 1 June 1975 (M.P.C. 3825). References 30em 2017-03-17 last obs. JPL Small-Body Database Browser: 1822 Waterman (1950 OO) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001822 https://web.archive.org/web/20161220141410/http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001822 20 December 2016 Jet Propulsion Laboratory 8 June 2017 Dictionary of Minor Planet Names – (1822) Waterman Schmadel Lutz D. Springer Berlin Heidelberg 146 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1823 (1822) Waterman 1822 Waterman (1950 OO) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1822 15 December 2016 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 Public Welfare Medal http://www.nasonline.org/programs/awards/public-welfare-medal.html https://web.archive.org/web/20111126045810/http://www.nasonline.org/programs/awards/public-welfare-medal.html dead 26 November 2011 National Academy of Sciences 22 August 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 15 December 2016 1822 15 December 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 The Astrophysical Journal 741 2 25 2011ApJ...741...90M 10.1088/0004-637X/741/2/90 1109.6407 Daniel A. III Klinglesmith Jesse Hanowell Ethan Risley Turk Janek Angelica Vargas Curtis Alan Warren July 2013 Etscorn Observed Asteroids: Results for Size Asteroids December 2012 - March 2013 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2013MPBu...40..154K The Minor Planet Bulletin 40 3 154–156 1052-8091 2013MPBu...40..154K 15 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 15 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/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 1822 1821 Aconcagua 1822 1823 Gliese 001822 001822 Category:Named minor planets 19500725