1765 Wrubel

Dark background asteroid October 2019 yes 1765 Wrubel #D6D6D6 Indiana University(Indiana Asteroid Program) Goethe Link Obs. 15 December 1957 (1765) Wrubel 1957 XB1938 JB1945 VA1949 HK 11951 XB 11955 KQ1966 KAA906 XAA917 XA Marshal Henry Wrubel(astronomy professor at IU) main-belt(outer) 4 September 2017 (JD 2458000.5) 0 99.58 yr (36,371 days) 3.7354 AU 2.6127 AU 3.1741 AU 0.1769 5.65 yr (2,065 days) 314.43° 0.1743 ms / day 19.945° 70.185° 265.28° 37.704 0.731 km38.299 0.226 km42.20 0.48 km42.33 km (SIMPS) 5.260 0.002 hlcdb-Mazzone-2012 0.1061 (SIMPS)0.113 0.0030.130 0.0290.1360 0.0153 Tholen DXB–V 0.750U–B 0.270 9.9210.06 0.12 1765 Wrubel, provisional designation 1957 XB, is a dark background asteroid from the outer regions of the asteroid belt, approximately 40 kilometers in diameter. It was discovered on 15 December 1957, by astronomers of the Indiana Asteroid Program at Goethe Link Observatory in Indiana, United States. The asteroid was named after Marshal Henry Wrubel, professor at Indiana University. Orbit and classification Wrubel is a background asteroid that does not belong to any known asteroid family. It orbits the Sun in the outer main-belt at a distance of 2.6–3.7 AU once every 5 years and 8 months (2,065 days). Its orbit has an eccentricity of 0.18 and an inclination of 20° with respect to the ecliptic. The asteroid was first identified as A906 XA at Lowell Observatory in December 1906. The body's observation arc begins with its identification as A917 XA at Heidelberg Observatory in December 1917, almost 40 years prior to its official discovery observation at Goethe Link. Physical characteristics Wrubel is a dark, carbonaceous asteroid. In the Tholen classification, its spectral type is ambiguous. Based on a numerical color analysis, it is closest to the dark D-type asteroid with some resemblance to the X-type asteroids (which encompass the primitive P-types). Rotation period In July 2012, a rotational lightcurve of Wrubel was obtained from photometric observations. Lightcurve analysis gave a well-defined rotation period of 5.260 hours with a brightness amplitude of 0.33 magnitude (U=3).lcdb-Mazzone-2012 Diameter and albedo According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Wrubel measures between 37.704 and 42.20 kilometers in diameter and its surface has an albedo between 0.113 and 0.1360. The Collaborative Asteroid Lightcurve Link adopt the results obtained by the Infrared Astronomical Satellite IRAS, that is, an albedo of 0.1061 and a diameter of 42.33 kilometers with an absolute magnitude of 9.92. Naming This minor planet was named after Marshal Henry Wrubel (1924–1968), professor of astronomy and faculty member at Indiana University, who was co-founder of the Indiana University Research Computing Center pioneering the use of high speed computers for astrophysical computations. The name was proposed by Frank K. Edmondson, who initiated the Indiana Asteroid Program. The official 1765 naming citation was published by the Minor Planet Center on 20 February 1971 (M.P.C. 3143). Notes lcdb-Mazzone-2012 Mazzone (2012) web. Observationy: 2012-07-16. Rotation period 5.260 0.002 hours with a brightness amplitude of 0.33 0.03 mag. Quality code of 3. Summary figures for (1765) Wrubel at Collaborative Asteroid Lightcurve Link (CALL) References 30em 2017-07-04 last obs. JPL Small-Body Database Browser: 1765 Wrubel (1957 XB) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001765 Jet Propulsion Laboratory 6 September 2017 Dictionary of Minor Planet Names – (1765) Wrubel Schmadel Lutz D. Springer Berlin Heidelberg 141 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1766 (1765) Wrubel 1765 Wrubel (1957 XB) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1765 6 September 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 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 https://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 6 September 2017 1765 6 September 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) 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 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 https://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 6 September 2017 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 1765 1764 Cogshall 1765 1766 Slipher 001765 001765 Wrubel 001765 19571215