1747 Wright

Asteroid October 2019 yes 1747 Wright #FA8072 1747Wright (Lightcurve Inversion).png Lightcurve-based 3D-model of Wright padding: 5px 0; 14 July 1947 C. A. Wirtanen Lick Obs. (1747) Wright 1947 NH William Wright(observatory's director) Mars-crosser 4 September 2017 (JD 2458000.5) 0 69.24 yr (25,290 days) 1.8977 AU 1.5207 AU 1.7092 AU 0.1103 2.23 yr (816 days) 174.63° 0.4411 ms / day 21.416° 268.39° 340.43° 5.17 0.24 km6.35 0.6 km (IRAS:2) 5.28796 0.00005 h5.2896 0.0002 h5.290 0.001 h 0.2005 0.043 (IRAS:2)0.321 0.034 Tholen = unusual, noisy spectrum with resemblances to A-type spectrumSMASS = SlBus–DeMeo = Sw 13.35 1747 Wright, provisional designation 1947 NH, is a stony asteroid and a sizable Mars-crosser, approximately 6 kilometers in diameter. It was discovered on 14 July 1947, by American astronomer Carl Wirtanen at Lick Observatory on Mount Hamilton near San Jose, California. It was named in memory of astronomer William Hammond Wright. Orbit and classification Wright orbits the Sun at a distance of 1.5–1.9 AU once every 2 years and 3 months (816 days). Its orbit has an eccentricity of 0.11 and an inclination of 21° with respect to the ecliptic. As no precoveries were taken and no previous identifications were made, Wright's observation arc begins with its official discovery observation at Mount Hamilton in 1947. Physical characteristics Spectral type and mineralogy In the SMASS taxonomic system, Wright is an Sl-type, which transitions between the common stony S-type and the less common L-type asteroids. In the Tholen classification, this asteroid could not be assigned to a specific type. Its spectrum was unusual and noisy and resembled that of an A-type asteroid. In 2012, Wright was observed in the near-infrared using the SpeX instrument of the NASA Infrared Telescope Facility on Mauna Kea, Hawaii. The spectral measurement indicate that Wright is not an olivine-rich A-type, but rather similar to the ordinary chondrites, with the common H chondrite as the most likely meteorite analogue for the asteroid's composition, as the spectra strongly indicate the presence of rock-forming pyroxenes minerals. The team of astronomers also characterized Wright as an Sw class asteroid using the Bus–DeMeo taxonomic system. Diameter and albedo According to the surveys carried out by the Infrared Astronomical Satellite IRAS and the Japanese Akari satellite, the asteroid measures 5.17 and 6.35 kilometers in diameter and its surface has an albedo of 0.20 and 0.32, respectively. The Collaborative Asteroid Lightcurve Link agrees with the results obtained by IRAS. Photometry In July 2005, a rotational lightcurve of Wright was obtained by astronomers Reiner Stoss, Jaime Nomen, Salvador Sánchez (astronomer) Salvador Sánchez fr Salvador Sánchez (astronome) it Salvador Sánchez (astronomo) and Raoul Behrend at the Mallorca Observatory, Spain. Lightcurve analysis gave a well-defined rotation period of 5.2896 hours with a brightness variation of 0.61 magnitude (U=3). In July 2014, another, concurring lightcurve with a period of 5.28796 hours and an amplitude of 0.53 was obtained by Robert Stephens at the Trojan Station of the Center for Solar System Studies (U81) in Landers, southern California. Naming This minor planet was named in memory of American astronomer William Hammond Wright (1871–1959), staff member and later director of the discovering Lick Observatory until 1942. A pioneer in astrophysics, his large, wide-field 20-inch Carnegie double astrograph built for the observatory's proper motion survey (first light in 1941), was using distant galaxies ("spiral nebulae") as object references. During this survey, many comets and asteroids were discovered as a by-product. The official 1747 naming citation was published by the Minor Planet Center on 20 February 1976 (M.P.C. 3934). Wright is also honored by the Martian and lunar craters Wright. References 30em 2016-10-09 last obs. JPL Small-Body Database Browser: 1747 Wright (1947 NH) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001747 Jet Propulsion Laboratory 7 June 2017 Dictionary of Minor Planet Names – (1747) Wright Schmadel Lutz D. Springer Berlin Heidelberg 139 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1748 (1747) Wright 1747 Wright (1947 NH) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1747 29 October 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 Asteroids and comets rotation curves – (1747) Wright Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001747 29 October 2016 1 April 2019 https://web.archive.org/web/20190401181659/http://obswww.unige.ch/~behrend/page4cou.html#001747 dead Carnegie Double Astrograph Lick Observatory https://www.ucolick.org/main/science/telescopes/carnegie.html 29 October 2016 Surface Mineralogy of Mars-Crossing Asteroid 1747 Wright Michael P. Lucas Joshua P. Emery http://www.lpi.usra.edu/meetings/lpsc2013/pdf/1813.pdf 25 August 2017 1747 29 October 2016 E. F. Tedesco P. V. Noah M. Noah S. D. Price October 2004 IRAS Minor Planet Survey V6.0 https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab NASA Planetary Data System – IRAS-A-FPA-3-RDR-IMPS-V6.0 2004PDSS...12.....T 17 October 2019 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 (online, AcuA catalog p. 153) Stoss, Reiner Nomen, Jaime Sanchez, Salvador Behrend, Raoul June 2006 Lightcurve of minor planet 1747 Wright http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2006MPBu...33...33S The Minor Planet Bulletin 33 2 33 1052-8091 2006MPBu...33...33S 18 November 2015 6 Hanus, J. Durech, J. Broz, M. Warner, B. D. Pilcher, F. Stephens, R. Oey, J. Bernasconi, L. Casulli, S. Behrend, R. Polishook, D. Henych, T. Lehký, M. Yoshida, F. Ito, T. June 2011 A study of asteroid pole-latitude distribution based on an extended set of shape models derived by the lightcurve inversion method http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011A&A...530A.134H Astronomy & Astrophysics 530 16 2011A&A...530A.134H 10.1051/0004-6361/201116738 1104.4114 18 November 2015 Stephens, Robert D. January 2015 Asteroids Observed from CS3: 2014 July - September http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015MPBu...42...70S The Minor Planet Bulletin 42 1 70–74 1052-8091 2015MPBu...42...70S 18 November 2015 External links Surface Mineralogy of Mars-Crossing Asteroid 1747 Wright: Analogous to the H Chondrites, fact sheet (PDF) Asteroid spectrum classification using Bus-DeMeo taxonomy, Planetary Spectroscopy at MIT 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 1747 1746 Brouwer 1747 1748 Mauderli 001747 Category:Discoveries by Carl A. Wirtanen Category:Named minor planets 001747 001747 19470714