| 词条 | 1569 Evita |
| 释义 |
| minorplanet = yes | name = 1569 Evita | background = #D6D6D6 | image = | image_size = | caption = | discovery_ref = | discoverer = M. Itzigsohn | discovery_site = La Plata Obs. | discovered = 3 August 1948 | mpc_name = (1569) Evita | alt_names = 1948 PA{{·}}1936 KE 1947 LA{{·}}{{mp|1976 SJ|10}} | pronounced = | named_after = Eva Perón {{nowrap|{{small|(First Lady of Argentina)}}[2]}} | mp_category = main-belt{{·}}{{small|(outer)}} | orbit_ref = | epoch = 4 September 2017 (JD 2458000.5) | uncertainty = 0 | observation_arc = 68.65 yr (25,075 days) | aphelion = 3.5669 AU | perihelion = 2.7267 AU | semimajor = 3.1468 AU | eccentricity = 0.1335 | period = 5.58 yr (2,039 days) | mean_anomaly = 95.582° | mean_motion = {{Deg2DMS|0.1766|sup=ms}} / day | inclination = 12.267° | asc_node = 99.509° | arg_peri = 249.74° | dimensions = {{val|36.346|0.208}} km[4] | rotation = | albedo = {{val|0.047|0.007}}[5] | spectral_type = | abs_magnitude = 11.2 }}1569 Evita, provisional designation {{mp|1948 PA}}, is a dark background asteroid from the outer regions of the asteroid belt, approximately 36 kilometers in diameter. It was discovered on 3 August 1948, by astronomer Miguel Itzigsohn at the La Plata Astronomical Observatory in Argentina.[7] The asteroid was named after Eva Perón.[2] Orbit and classificationBased on the Hierarchical Clustering Method, Evita is a background asteroid that does not belong to any known asteroid family.[9] It orbits the Sun in the outer main-belt at a distance of 2.7–3.6 AU once every 5 years and 7 months (2,039 days). Its orbit has an eccentricity of 0.13 and an inclination of 12° with respect to the ecliptic. The asteroid was first identified as {{mp|1936 KE}} at the Johannesburg Observatory in May 1936. The body's observation arc begins with its official discovery observation at La Plata.[7] Physical characteristicsDiameter and albedoAccording to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Evita measures 36.346 kilometers in diameter and its surface has an albedo of 0.047.[4][5] An albedo near 0.05 is typical for carbonaceous C-type asteroids which dominate the outer asteroid belt. It has an absolute magnitude of 11.2. Rotation periodAs of 2017, no rotational lightcurve of Evita has been obtained from photometric observations. The asteroid's rotation period and axis, as well as its shape remain unknown.[15] NamingThis minor planet was named in after the First Lady of Argentina, Eva Perón (1919–1952), who was commonly known by the affectionate Spanish diminutive form of her name, Evita. She was the wife of President Juan Perón (1895–1974) of Argentina.[2] The discoverer also named the asteroids 1581 Abanderada, 1582 Martir, 1588 Descamisada and 1589 Fanatica in tribute to Eva Perón.[2] The official naming citation was published by the Minor Planet Center before November 1979 ({{small|M.P.C. 519}}).[18] References1. ^1 2 3 4 {{cite book |title = Dictionary of Minor Planet Names – (1569) Evita |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 124 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_1570 |chapter = (1569) Evita }} [1][2][3][4][5][6][7]2. ^1 2 {{cite web |title = 1569 Evita (1948 PA) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=1569 |accessdate = 12 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 = 12 September 2017}} 4. ^1 2 {{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= 12 September 2017}} 5. ^1 2 {{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= 12 September 2017}} 6. ^1 {{cite web |title = Small Bodies Data Ferret |work = Nesvorny HCM Asteroid Families V3.0 |url = https://sbntools.psi.edu/ferret/PropertySearch/familyForm.action |accessdate = 12 September 2017}} 7. ^1 {{cite web |title = LCDB Data for (1569) Evita |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=1569%7CEvita |accessdate = 12 September 2017}} }} External links
5 : Background asteroids|Discoveries by Miguel Itzigsohn|Minor planets named for people|Named minor planets|Astronomical objects discovered in 1948 |
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