词条 | 2747 Český Krumlov |
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| minorplanet = yes | name = 2747 Cesky Krumlov | background = #D6D6D6 | image = File:Český Krumlov orbit.png | image_size = 200 | caption = Orbital diagram of Český Krumlov | discovery_ref = | discovered = 19 February 1980 | discoverer = A. Mrkos | discovery_site = Kleť Obs. | mpc_name = (2747) Cesky Krumlov | alt_names = 1980 DW{{·}}{{mp|1953 FO|1}} {{mp|1975 EK|5}}{{·}}{{mp|1977 SV|2}} {{mp|1977 TM|3}}{{·}}{{mp|1977 TS|7}} 1982 OM | pronounced = {{IPA-cs|ˈtʃɛskiː ˈkrʊmlof|lang}} | named_after = Český Krumlov {{small|(Czech town)}}[2] | mp_category = main-belt{{·}}{{small|(outer)}}[3] | orbit_ref = | epoch = 4 September 2017 (JD 2458000.5) | uncertainty = 0 | observation_arc = 63.93 yr (23,351 days) | aphelion = 3.4959 AU | perihelion = 2.6996 AU | semimajor = 3.0978 AU | eccentricity = 0.1285 | period = 5.45 yr (1,991 days) | mean_anomaly = 183.40° | mean_motion = {{Deg2DMS|0.1808|sup=ms}} / day | inclination = 5.8182° | asc_node = 344.88° | arg_peri = 302.03° | dimensions = 20.62 km {{small|(calculated)}}[3] {{val|22.51|6.03}} km[6] {{val|22.57|7.52}} km[7] {{val|28.39|0.98}} km[8] {{val|29.804|0.174}} km[9] {{val|32.103|0.239}} km[10] 32.63 km[11] {{val|36.33|0.66}} km[12] | rotation = {{val|438.7098|9.1557}} h[13] | albedo = {{val|0.028|0.004}}[9][12] {{val|0.0380|0.004}}[11] {{val|0.0393|0.0040}}[10] {{val|0.05|0.08}}[6] {{val|0.051|0.004}}[8] 0.057 {{small|(assumed)}}[3] {{val|0.06|0.07}}[7] | spectral_type = X [22]{{·}}C [3] | abs_magnitude = 11.6[8][10]{{·}}11.70[7][12]{{·}}{{val|11.706|0.003}} {{small|(R)}}[13]{{·}}11.8{{·}}{{val|11.97|0.27}}[22]{{·}}12.16[3] }}2747 Český Krumlov ({{IPA-cs|ˈtʃɛskiː ˈkrumlof|lang}}), provisional designation {{mp|1980 DW}}, is a carbonaceous asteroid and slow rotator from the outer regions of the asteroid belt, approximately 22 kilometers in diameter. It was discovered by Czech astronomer Antonín Mrkos at Kleť Observatory on 19 February 1980, and named for the Czech town of Český Krumlov.[2][33] Orbit and classificationČeský Krumlov belongs to the Hygiea family.{{citation needed|date=October 2015}} It orbits the Sun in the outer main-belt at a distance of 2.7–3.5 AU once every 5 years and 5 months (1,991 days). Its orbit has an eccentricity of 0.13 and an inclination of 6° with respect to the ecliptic.It was first identified as {{mp|1953 FO|1}} at Almaty Observatory ({{small|210}}) in 1953. The body's observation arc begins four weeks later with a precovery taken at Palomar Observatory, 27 years prior to its official discovery observation at Klet Observatory.[33] Physical characteristicsČeský Krumlov has been characterized as a X-type and carbonaceous C-type asteroid.[3][22]Slow rotatorIn October 2010, a rotational lightcurve of Český Krumlov was obtained from photometric observations by astronomers at the Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of 438.7098 hours with a brightness variation of 0.63 magnitude ({{small|U=2}}).[13] This makes it a very slow rotator. Diameter and albedoAccording to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Český Krumlov measures between 22.51 and 36.33 kilometers in diameter and its surface has an albedo between 0.028 and 0.06.[6][7][8][9][10][11][12] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 20.62 kilometers with an absolute magnitude of 12.16.[3] NamingThis minor planet was named after the historic Czech town of Český Krumlov, near to the location of the discovering Kleť Observatory.[2] The approved naming citation was published by the Minor Planet Center on 29 November 1993 ({{small|M.P.C. 22828}}).[48] References1. ^1 2 3 {{cite book |title = Dictionary of Minor Planet Names – (2747) Český Krumlov |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 225 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_2748 |chapter = (2747) Český Krumlov }} [1][2][3][4][5][6][7][8][9][10][11][12][13]2. ^1 2 {{cite web |title = 2747 Cesky Krumlov (1980 DW) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=2747 |accessdate = 18 June 2017}} 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 = 18 June 2017}} 4. ^1 2 3 {{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= 8 December 2016}} 5. ^1 2 3 {{cite journal |display-authors = 6 |first1 = Joseph R. |last1 = Masiero |first2 = T. |last2 = Grav |first3 = A. K. |last3 = Mainzer |first4 = C. R. |last4 = Nugent |first5 = J. M. |last5 = Bauer |first6 = R. |last6 = Stevenson |first7 = S. |last7 = Sonnett |date = August 2014 |title = Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M |journal = The Astrophysical Journal |volume = 791 |issue = 2 |page = 11 |bibcode = 2014ApJ...791..121M |doi = 10.1088/0004-637X/791/2/121 |arxiv = 1406.6645 |access-date= 18 June 2017}} 6. ^1 2 3 4 5 6 7 {{cite web |title = LCDB Data for (2747) Český Krumlov |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=2747%7CČeský%20Krumlov |accessdate = 18 June 2017}} 7. ^1 2 3 4 {{cite journal |display-authors = 6 |first1 = A. |last1 = Mainzer |first2 = T. |last2 = Grav |first3 = J. |last3 = Masiero |first4 = E. |last4 = Hand |first5 = J. |last5 = Bauer |first6 = D. |last6 = Tholen |first7 = R. S. |last7 = McMillan |first8 = T. |last8 = Spahr |first9 = R. 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6 : Hygiea asteroids|Discoveries by Antonín Mrkos|Minor planets named for places|Named minor planets|Slow rotating minor planets|Astronomical objects discovered in 1980 |
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