1761 Edmondson

Main-belt asteroid yes 1761 Edmondson #D6D6D6 30 March 1952 Indiana University(Indiana Asteroid Program) Goethe Link Obs. (1761) Edmondson 1952 FN1940 BC1950 XP1952 HT1955 US1969 JK1978 WY Frank Edmondson(American astronomer) main-beltbackground 4 September 2017 (JD 2458000.5) 0 64.74 yr (23,646 days) 3.9145 AU 2.4388 AU 3.1766 AU 0.2323 5.66 yr (2,068 days) 282.49° 0.1741 ms / day 2.4636° 76.988° 49.903° 20.51 km (calculated)21.94 0.94 km 4.208 0.002 h 0.08 (assumed)0.102 0.009 C 11.4011.812.06 0.33 1761 Edmondson, provisional designation 1952 FN, is a dark background asteroid from the outer regions of the asteroid belt, approximately 21 kilometers in diameter. It was discovered on 30 March 1952, by the Indiana Asteroid Program at Goethe Link Observatory, United States. It was named after astronomer Frank Edmondson. Orbit and classification Edmondson is a background asteroid, located near the region occupied by the Themis family, a dynamical family of outer-belt asteroids with nearly coplanar ecliptical orbits. It orbits the Sun in the outer main-belt at a distance of 2.4–3.9 AU once every 5 years and 8 months (2,068 days). Its orbit has an eccentricity of 0.23 and an inclination of 2° with respect to the ecliptic. It was first identified as 1940 BC at Konkoly Observatory in 1940. The body's observation arc begins with its identification as 1950 XP at McDonald Observatory in 1950, or 2 years prior to its official discovery observation at Goethe Link. Physical characteristics Edmondson has been characterized as a carbonaceous C-type asteroid. Rotation period In November 2012, a rotational lightcurve of Edmondson was obtained from photometric observations at the Etscorn Campus Observatory (719) in New Mexico, United States. Lightcurve analysis gave a well-defined rotation period of 4.208 hours with a brightness variation of 0.29 magnitude (U=3). Diameter and albedo According to the surveys carried out by the Japanese Akari satellite, Edmondson measures 21.94 kilometers in diameter and its surface has an albedo of 0.102, while the Collaborative Asteroid Lightcurve Link assumes a more typical albedo for carbonaceous asteroids of 0.08 and calculates a diameter of 20.51 kilometers with an absolute magnitude of 11.8. Naming This minor planet was named for astronomer Frank K. Edmondson (1912–2008) of Indiana University, the program's founder and director. The official 1761 naming citation was published by the Minor Planet Center on 20 February 1971 (M.P.C. 3143). References 30em 2016-12-25 last obs. JPL Small-Body Database Browser: 1761 Edmondson (1952 FN) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001761 Jet Propulsion Laboratory 14 June 2017 Dictionary of Minor Planet Names – (1761) Edmondson Schmadel Lutz D. Springer Berlin Heidelberg 140 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1762 (1761) Edmondson 1761 Edmondson (1952 FN) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1761 14 June 2017 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 1761 14 June 2017 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 free (online, AcuA catalog p. 153) Daniel A. III Klinglesmith Jesse Hanowell Ethan Risley Janek Turk Angelica Vargas Curtis Alan Warren April 2013 Asteroid Synodic Periods from Etscorn Campus Observatory http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2013MPBu...40...65K The Minor Planet Bulletin 40 2 65–67 1052-8091 2013MPBu...40...65K 14 June 2017 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 14 June 2017 External links Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 2017-12-16 ) 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 2016-07-29 – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1761 1761 Edmondson (1952 FN) 2001761 1760 Sandra 1761 1762 Russell 001761 001761 Category:Named minor planets 19520330