| 词条 | 1931 Čapek |
| 释义 |
| minorplanet = yes | name = 1931 Čapek | background = #D6D6D6 | image = | image_size = | caption = | discovery_ref = | discoverer = L. Kohoutek | discovery_site = Bergedorf Obs. | discovered = 22 August 1969 | mpc_name = (1931) Čapek | alt_names = 1969 QB{{·}}1957 TK 1969 PB | pronounced = | named_after = Karel Čapek[2] {{small|(Czech writer)}}[2] | mp_category = main-belt{{·}}{{small|(middle)}} | orbit_ref = | epoch = 4 September 2017 (JD 2458000.5) | uncertainty = 0 | observation_arc = 59.76 yr (21,826 days) | aphelion = 3.2311 AU | perihelion = 1.8513 AU | semimajor = 2.5412 AU | eccentricity = 0.2715 | period = 4.05 yr (1,480 days) | mean_anomaly = 297.94° | mean_motion = {{Deg2DMS|0.2433|sup=ms}} / day | inclination = 8.2623° | asc_node = 182.43° | arg_peri = 164.55° | dimensions = {{val|6.628|0.214}} km[5] | rotation = | albedo = {{val|0.254|0.035}}[5] | spectral_type = Tholen {{=}} C | abs_magnitude = 13.0 }}1931 Čapek, provisional designation {{mp|1969 QB}}, is a background asteroid from the central regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 22 August 1969, by Czech astronomer Luboš Kohoutek at the Bergedorf Observatory in Hamburg, Germany.[9] The asteroid was named in memory of Czech writer Karel Čapek.[2] Orbit and classificationČapek is a background asteroid, not associated to any known asteroid family. It orbits the Sun in the inner part of the central main-belt near the 3:1 resonance with Jupiter at a distance of 1.9–3.2 AU once every 4 years and 1 month (1,480 days). Its orbit has an eccentricity of 0.27 and an inclination of 8° with respect to the ecliptic.The asteroid was first identified as {{mp|1957 TK}} at Goethe Link Observatory in October 1957. The body's observation arc begins at Crimea–Nauchnij, eleven days prior to its official discovery observation at Bergedorf.[9] Physical characteristicsSpectral typeIn the Tholen classification, Čapek is a common carbonaceous C-type asteroid. This strongly disagrees with the albedo obtained by the Wide-field Infrared Survey Explorer (WISE), which indicates that Čapek is a stony S-type asteroid rather than a carbonaceous one.[5] Rotation periodAs of 2017, no rotational lightcurve of Čapek has been obtained from photometric observations. The asteroid's rotation period, shape and poles remain unknown.[16] Diameter and albedoAccording to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Čapek measures 6.628 kilometers in diameter and its surface has an albedo of 0.254.[5] NamingThis minor planet was named in memory of Karel Čapek (1890–1938), Czech dramatist and novelist, best known for his allegorical plays R.U.R. and Krakatit, in which he anticipated both, the destructive potential of nuclear physics and their moral implications.[2] The official naming citation was published by the Minor Planet Center on 27 June 1991 ({{small|M.P.C. 18447}}).[19] References1. ^1 2 3 4 {{cite book |title = Dictionary of Minor Planet Names – (1931) Čapek |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 155 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_1932 |chapter = (1931) Čapek }} [1][2][3][4][5]2. ^1 2 {{cite web |title = 1931 Capek (1969 QB) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=1931 |accessdate = 5 September 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 = 5 September 2017}} 4. ^1 2 3 4 {{cite journal |display-authors = 6 |first1 = Joseph R. |last1 = Masiero |first2 = A. K. |last2 = Mainzer |first3 = T. |last3 = Grav |first4 = J. M. |last4 = Bauer |first5 = R. M. |last5 = Cutri |first6 = C. |last6 = Nugent |first7 = M. S. |last7 = Cabrera |date = November 2012 |title = Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M |journal = The Astrophysical Journal Letters |volume = 759 |issue = 1 |page = 5 |bibcode = 2012ApJ...759L...8M |doi = 10.1088/2041-8205/759/1/L8 |arxiv = 1209.5794 |access-date= 5 September 2017}} 5. ^1 {{cite web |title = LCDB Data for (1931) Čapek |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=1931%7CČapek |accessdate = 5 September 2017}} }} External links
6 : Background asteroids|Discoveries by Luboš Kohoutek|Minor planets named for people|Named minor planets|C-type asteroids (Tholen)|Astronomical objects discovered in 1969 |
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