| 词条 | 1747 Wright |
| 释义 |
| minorplanet = yes | name = 1747 Wright | background = #FA8072 | image = 1747Wright (Lightcurve Inversion).png | image_size = 265 | caption = {{longitem|Lightcurve-based 3D-model of Wright|style=padding: 5px 0;}} | discovery_ref = | discovered = 14 July 1947 | discoverer = C. A. Wirtanen | discovery_site = Lick Obs. | mpc_name = (1747) Wright | alt_names = 1947 NH | named_after = William Wright {{small|(observatory's director)}} [2] | mp_category = Mars-crosser [4][5] | orbit_ref = | epoch = 4 September 2017 (JD 2458000.5) | uncertainty = 0 | observation_arc = 69.24 yr (25,290 days) | aphelion = 1.8977 AU | perihelion = 1.5207 AU | semimajor = 1.7092 AU | eccentricity = 0.1103 | period = 2.23 yr (816 days) | mean_anomaly = 174.63° | mean_motion = {{Deg2DMS|0.4411|sup=ms}} / day | inclination = 21.416° | asc_node = 268.39° | arg_peri = 340.43° | dimensions = {{val|5.17|0.24}} km [7] {{val|6.35|0.6}} km {{small|(IRAS:2)}}[8] | rotation = {{val|5.28796|0.00005}} h[9] {{val|5.2896|0.0002}} h[10][11] {{val|5.290|0.001}} h[12] | albedo = {{nowrap|{{val|0.2005|0.043}} {{small|(IRAS:2)}}[8]}} {{val|0.321|0.034}} [7] | spectral_type = Tholen = unusual, noisy spectrum with resemblances to A-type spectrum SMASS = Sl Bus–DeMeo = Sw [17] | abs_magnitude = 13.35[5][7][8] }} 1747 Wright, provisional designation {{mp|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.[4] It was named in memory of astronomer William Hammond Wright.[2] Orbit and classificationWright 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.[4]Physical characteristicsSpectral type and mineralogyIn 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. It's 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 {{mp|Sw}} class asteroid using the Bus–DeMeo taxonomic system.[17] Diameter and albedoAccording 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.[7][8] The Collaborative Asteroid Lightcurve Link agrees with the results obtained by IRAS.[5] PhotometryIn July 2005, a rotational lightcurve of Wright was obtained by astronomers Reiner Stoss, Jaime Nomen, Salvador Sánchez and Raoul Behrend at the Mallorca Observatory, Spain. Lightcurve analysis gave a well-defined rotation period of {{val|5.2896}} hours with a brightness variation of 0.61 magnitude ({{small|U=3}}).[10][11] In July 2014, another, concurring lightcurve with a period of {{val|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 ({{small|U81}}) in Landers, southern California.[12] NamingThis 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.[2][35] Wright is also honored by the Martian and lunar craters Wright.[2] The official naming citation was published by the Minor Planet Center before November 1977 ({{small|M.P.C. 3934}}).[37] References1. ^1 2 3 4 {{cite book |title = Dictionary of Minor Planet Names – (1747) Wright |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 139 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_1748 |chapter = (1747) Wright }} [1][2][3][4][5][6][7][8][9][10][11][12]2. ^1 2 3 {{cite web |title = 1747 Wright (1947 NH) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=1747 |accessdate = 29 October 2016}} 3. ^1 {{cite web |title = MPC/MPO/MPS Archive |work = Minor Planet Center |url = http://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html |accessdate = 29 October 2016}} 4. ^1 2 {{cite web |title = Asteroids and comets rotation curves – (1747) Wright |last = Behrend |first = Raoul |publisher = Geneva Observatory |url = http://obswww.unige.ch/~behrend/page4cou.html#001747 |accessdate = 29 October 2016}} 5. ^1 {{cite web |title = Carnegie Double Astrograph |publisher = Lick Observatory |url = https://www.ucolick.org/main/science/telescopes/carnegie.html |accessdate = 29 October 2016}} 6. ^1 2 {{cite web |title = Surface Mineralogy of Mars-Crossing Asteroid 1747 Wright |author1 = Michael P. Lucas |author2 = Joshua P. Emery |url = http://www.lpi.usra.edu/meetings/lpsc2013/pdf/1813.pdf |accessdate = 25 August 2017}} 7. ^1 2 3 {{cite web |title = LCDB Data for (1747) Wright |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=1747%7CWright |accessdate = 29 October 2016}} 8. ^1 2 3 4 {{cite journal |first1 = E. F. |last1 = Tedesco |first2 = P. V. |last2 = Noah |first3 = M. |last3 = Noah |first4 = S. D. |last4 = Price |date = October 2004 |title = IRAS Minor Planet Survey V6.0 |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2004PDSS...12.....T |journal = NASA Planetary Data System |volume = 12 |pages = IRAS-A-FPA-3-RDR-IMPS-V6.0 |bibcode = 2004PDSS...12.....T |access-date= 29 October 2016}} 9. ^1 2 3 4 {{cite journal |display-authors = 6 |first1 = Fumihiko |last1 = Usui |first2 = Daisuke |last2 = Kuroda |first3 = Thomas G. |last3 = Müller |first4 = Sunao |last4 = Hasegawa |first5 = Masateru |last5 = Ishiguro |first6 = Takafumi |last6 = Ootsubo |first7 = Daisuke |last7 = Ishihara |first8 = Hirokazu |last8 = Kataza |first9 = Satoshi |last9 = Takita |first10 = Shinki |last10 = Oyabu |first11 = Munetaka |last11 = Ueno |first12 = Hideo |last12 = Matsuhara |first13 = Takashi |last13 = Onaka |date = October 2011 |title = Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey |url = http://pasj.oxfordjournals.org/content/63/5/1117.full.pdf+html |journal = Publications of the Astronomical Society of Japan |volume = 63 |issue = 5 |pages = 1117–1138 |bibcode = 2011PASJ...63.1117U |doi = 10.1093/pasj/63.5.1117 |access-date= 29 October 2016}} 10. ^1 2 {{cite journal |author = Stoss, Reiner |author2 = Nomen, Jaime |author3 = Sanchez, Salvador |author4 = Behrend, Raoul |date = June 2006 |title = Lightcurve of minor planet 1747 Wright |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2006MPBu...33...33S |journal = The Minor Planet Bulletin |volume = 33 |issue = 2 |page = 33 |issn = 1052-8091 |bibcode = 2006MPBu...33...33S |access-date= 18 November 2015}} 11. ^1 {{cite journal |display-authors = 6 |author = Hanus, J. |author2 = Durech, J. |author3 = Broz, M. |author4 = Warner, B. D. |author5 = Pilcher, F. |author6 = Stephens, R. |author7 = Oey, J. |author8 = Bernasconi, L. |author9 = Casulli, S. |author10 = Behrend, R. |author11 = Polishook, D. |author12 = Henych, T. |author13 = Lehký, M. |author14 = Yoshida, F. |author15 = Ito, T. |date = June 2011 |title = A study of asteroid pole-latitude distribution based on an extended set of shape models derived by the lightcurve inversion method |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011A&A...530A.134H |journal = Astronomy & Astrophysics |volume = 530 |pages = 16 |bibcode = 2011A&A...530A.134H |doi = 10.1051/0004-6361/201116738 |arxiv = 1104.4114 |access-date= 18 November 2015}} 12. ^1 2 {{cite journal |author = Stephens, Robert D. |date = January 2015 |title = Asteroids Observed from CS3: 2014 July - September |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015MPBu...42...70S |journal = The Minor Planet Bulletin |volume = 42 |issue = 1 |pages = 70–74 |issn = 1052-8091 |bibcode = 2015MPBu...42...70S |access-date= 18 November 2015}} }} External links
7 : Mars-crossing asteroids|Discoveries by Carl A. Wirtanen|Minor planets named for people|Named minor planets|AU:-type asteroids (Tholen)|Sl-type asteroids (SMASS)|Astronomical objects discovered in 1947 |
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