1046 Edwin

Background asteroid March 2018 yes 1046 Edwin #D6D6D6 Orbit of 1046 Edwin.gif Orbital diagram of 1046 Edwin G. van Biesbroeck Yerkes Obs. 1 December 1924 (1046) Edwin 1924 UA1949 RB1949 YL Edwin Van Biesbroeck(discoverer's son) main-belt(outer)background 23 March 2018 (JD 2458200.5) 0 91.86 yr (33,553 d) 3.1769 AU 2.7895 AU 2.9832 AU 0.0649 5.15 yr (1,882 d) 53.846° 0.1913 ms / day 7.8991° 10.745° 47.898° 25.15 0.66 km29.084 0.405 km36.355 0.604 km42.23 km (calculated) 5.29 0.01 hlightcurve-plot-Koff5.2906 0.0001 h5.296 0.006 h5.30 0.02 h 0.057 (assumed)0.1113 0.01450.201 0.0390.235 0.014 SMASS XeM 10.2010.611.08 0.29 1046 Edwin, provisional designation 1924 UA, is a background asteroid from the outer regions of the asteroid belt, approximately 30 km mi off 1 us kilometers in diameter. It was discovered on 1 December 1924, by Belgian–American astronomer George Van Biesbroeck at the Yerkes Observatory in Wisconsin, United States, who named it after his son, Edwin Van Biesbroeck. The potentially metallic asteroid has a short rotation period of 5.29 hours. Orbit and classification Edwin is a non-family asteroid from the main belt's background population. It orbits the Sun in the outer asteroid belt at a distance of 2.8–3.2 AU once every 5 years and 2 months (1,882 days; semi-major axis of 2.98 AU). Its orbit has an eccentricity of 0.06 and an inclination of 8° with respect to the ecliptic. The body's observation arc begins with its first recorded observation at Heidelberg Observatory in March 1926, or 15 months after its official discovery observation at Yerkes Observatory. Physical characteristics In the SMASS classification, Edwin is an Xe-subtype that transitions from the X-type to the very bright E-type asteroid It has also been characterized as a metallic M-type asteroid by the Wide-field Infrared Survey Explorer (WISE). Rotation period Since 2001, several rotational lightcurves of Edwin have been obtained from photometric observations by American William Koff at the Antelope Hills Observatory H09 in Colorado,lightcurve-plot-Koff Richard Ditteon at the Oakley Observatory in Indiana, and French amateur astronomers Pierre Antonini, René Roy and Stéphane Charbonnel. Analysis of the best-rated lightcurve by Pierre Antonini from November 2006, gave a rotation period of 5.2906 hours with a brightness amplitude of 0.27 magnitude (U=3). While not being a fast rotator, it has a relatively short spin-rate for an asteroid of its size. Diameter and albedo According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's WISE telescope, Edwin measures between 25.15 and 36.355 kilometers in diameter and its surface has an albedo between 0.1113 and 0.235. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and consequently calculates a larger diameter of 42.23 kilometers based on an absolute magnitude of 10.6. Naming This minor planet was named after Edwin Van Biesbroeck, son of discoverer George Van Biesbroeck. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 99). Notes lightcurve-plot-Koff Lightcurve plot of (1046) Edwin by Robert A. Koff at the Antelope Hills Observatory. Rotation period 5.29 0.01 hours. Quality code of 2+. References 30em 2018-01-26 last obs. JPL Small-Body Database Browser: 1046 Edwin (1924 UA) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001046 Jet Propulsion Laboratory 20 March 2018 (1046) Edwin Dictionary of Minor Planet Names https://archive.org/details/dictionaryminorp00schm limited Schmadel Lutz D. Springer Berlin Heidelberg 89 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1047 1046 Edwin (1924 UA) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1046 20 March 2018 Asteroids and comets rotation curves – (1046) Edwin Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page3cou.html#001046 20 March 2018 3 December 2002 https://web.archive.org/web/20021203214643/http://obswww.unige.ch/~behrend/page3cou.html#001046 dead 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 The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 Asteroid 1046 Edwin – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1046+Edwin 24 October 2019 3 October 2020 https://web.archive.org/web/20201003191714/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1046+Edwin dead 1046 20 March 2018 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 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 catalog Koff, R. A. June 2002 Lightcurve Photometry of 492 Gismonda, 1046 Edwin, and 1310 Villigera The Minor Planet Bulletin 29 25–26 2002MPBu...29...25K Richard Ditteon Scot Hawkins September 2007 Asteroid Lightcurve Analysis at the Oakley Observatory - October-November 2006 The Minor Planet Bulletin 34 3 59–64 1052-8091 2007MPBu...34...59D 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 Icarus 261 34–47 2015Icar..261...34V 10.1016/j.icarus.2015.08.007 1506.00762 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 1046 1045 Michela 1046 1047 Geisha 001046 Category:Discoveries by George Van Biesbroeck Category:Named minor planets 001046 19241201