| 词条 | 1849 Kresák |
| 释义 |
| minorplanet = yes | name = 1849 Kresák | background = #D6D6D6 | image = | image_size = | caption = | discovery_ref = | discovered = 14 January 1942 | discoverer = K. Reinmuth | discovery_site = Heidelberg Obs. | mpc_name = (1849) Kresák | alt_names = 1942 AB{{·}}1948 EO {{mp|1951 WC|2}} | named_after = Ľubor Kresák {{small|(Slovak astronomer)}}[2] | mp_category = main-belt{{·}}{{small|(outer)}} [3] Eos [4] | orbit_ref = | epoch = 4 September 2017 (JD 2458000.5) | uncertainty = 0 | observation_arc = 75.29 yr (27,500 days) | aphelion = 3.1076 AU | perihelion = 3.0009 AU | semimajor = 3.0542 AU | eccentricity = 0.0175 | period = 5.34 yr (1,950 days) | mean_anomaly = 353.13° | mean_motion = {{Deg2DMS|0.1847|sup=ms}} / day | inclination = 10.765° | asc_node = 50.363° | arg_peri = 143.25° | dimensions = {{val|21.776|2.427}} km[6] 26.14 km {{small|(calculated)}}[3] | rotation = {{val|19.1008|0.0153}} h[8] | albedo = 0.057 {{small|(assumed)}}[3] {{val|0.114|0.032}}[6] | spectral_type = C {{small|(assumed)}}[3] | abs_magnitude = {{val|11.191|0.002}} {{small|(R)}}[8]{{·}}11.28[6]{{·}}11.5{{·}}{{val|11.61|0.32}}[15]{{·}}11.64[3] }}1849 Kresák, provisional designation {{mp|1942 AB}}, is a carbonaceous Eoan asteroid from the outer region of the asteroid belt, approximately 24 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory in the middle of World War II on 14 January 1942.[17] The asteroid was later named after Slovak astronomer Ľubor Kresák.[2] Orbit and classificationKresák is a member of the Eos family ({{small|606}}), the largest asteroid family in the outer main belt consisting of nearly 10,000 asteroids.[4][20]{{rp|23}} It orbits the Sun in the outer main-belt at a distance of 3.0–3.1 AU once every 5 years and 4 months (1,950 days). Its orbit has an eccentricity of 0.02 and an inclination of 11° with respect to the ecliptic. The body's observation arc begins 6 days after its official discovery observation.[17]Physical characteristicsKresák has been characterized as a carbonaceous C-type asteroid.[3]Rotation periodIn January 2012, a rotational lightcurve of Kresák was obtained from photometric observations at the Palomar Transient Factory in California. In the R-band, it gave a rotation period of 19.10 hours with a brightness variation of 0.19 magnitude ({{small|U=2}}).[8] Diameter and albedoAccording to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Kresák measures 21.7 kilometers in diameter, and its surface has an albedo of 0.114,[6] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 26.1 kilometers with an absolute magnitude of 11.64.[3] NamingThis minor planet was named in honor of Slovak astronomer Ľubor Kresák (1927–1994) from the Slovak Academy of Sciences in Bratislava and president of IAU's Commission 20 in the 1970s.[2] Kresák is known for his theoretical work on meteors and the question of their relationship with comets and minor planets, as well as for the rediscovery of the short-period comet 41P/Tuttle–Giacobini–Kresák at the Skalnaté Pleso Observatory in 1951.[2] The official naming citation was published by the Minor Planet Center before November 1977 ({{small|M.P.C. 3935}}).[29] References1. ^1 2 3 4 {{cite book |title = Dictionary of Minor Planet Names – (1849) Kresák |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 148 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_1850 |chapter = (1849) Kresák }} [1][2][3][4][5][6][7][8][9]2. ^1 2 {{cite web |title = 1849 Kresak (1942 AB) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=1849 |accessdate = 14 December 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 = 14 December 2016}} 4. ^1 2 {{cite web |title = Small Bodies Data Ferret |work = Nesvorny HCM Asteroid Families V3.0 |url = https://sbntools.psi.edu/ferret/PropertySearch/familyForm.action |accessdate = 21 November 2017}} 5. ^1 {{Cite book |first1 = D. |last1 = Nesvorný |first2 = M. |last2 = Broz |first3 = V. |last3 = Carruba |date = December 2014 |title = Identification and Dynamical Properties of Asteroid Families |journal = Asteroids IV |pages = 297–321 |bibcode = 2015aste.book..297N |doi = 10.2458/azu_uapress_9780816532131-ch016 |arxiv = 1502.01628 |isbn = 9780816532131 }} 6. ^1 2 3 4 5 6 7 {{cite web |title = LCDB Data for (1849) Kresák |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=1849%7CKresák |accessdate = 14 December 2016}} 7. ^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= 14 December 2016}} 8. ^1 2 3 {{cite journal |display-authors = 6 |first1 = Adam |last1 = Waszczak |first2 = Chan-Kao |last2 = Chang |first3 = Eran O. |last3 = Ofek |first4 = Russ |last4 = Laher |first5 = Frank |last5 = Masci |first6 = David |last6 = Levitan |first7 = Jason |last7 = Surace |first8 = Yu-Chi |last8 = Cheng |first9 = Wing-Huen |last9 = Ip |first10 = Daisuke |last10 = Kinoshita |first11 = George |last11 = Helou |first12 = Thomas A. |last12 = Prince |first13 = Shrinivas |last13 = Kulkarni |date = September 2015 |title = Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W |journal = The Astronomical Journal |volume = 150 |issue = 3 |page = 35 |bibcode = 2015AJ....150...75W |doi = 10.1088/0004-6256/150/3/75 |arxiv = 1504.04041 |access-date= 14 December 2016}} 9. ^1 {{cite journal |display-authors = 6 |first1 = Peter |last1 = Veres |first2 = Robert |last2 = Jedicke |first3 = Alan |last3 = Fitzsimmons |first4 = Larry |last4 = Denneau |first5 = Mikael |last5 = Granvik |first6 = Bryce |last6 = Bolin |first7 = Serge |last7 = Chastel |first8 = Richard J. |last8 = Wainscoat |first9 = William S. |last9 = Burgett |first10 = Kenneth C. |last10 = Chambers |first11 = Heather |last11 = Flewelling |first12 = Nick |last12 = Kaiser |first13 = Eugen A. |last13 = Magnier |first14 = Jeff S. |last14 = Morgan |first15 = Paul A. |last15 = Price |first16 = John L. |last16 = Tonry |first17 = Christopher |last17 = Waters |date = November 2015 |title = Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V |journal = Icarus |volume = 261 |pages = 34–47 |bibcode = 2015Icar..261...34V |doi = 10.1016/j.icarus.2015.08.007 |arxiv = 1506.00762 |access-date= 14 December 2016}} }} External links
5 : Eos asteroids|Discoveries by Karl Wilhelm Reinmuth|Minor planets named for people|Named minor planets|Astronomical objects discovered in 1942 |
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