| 词条 | 1119 Euboea |
| 释义 |
| minorplanet = yes | name = 1119 Euboea | background = #D6D6D6 | image = | image_size = | caption = | discovery_ref = | discoverer = K. Reinmuth | discovery_site = Heidelberg Obs. | discovered = 27 October 1927 | mpc_name = (1119) Euboea | alt_names = 1927 UB | pronounced = {{IPAc-en|j|uː|ˈ|b|iː|ə}} | named_after = Euboea {{small|(Greek island)}} [2] | mp_category = main-belt{{·}}{{small|(middle)}} [3] background [4] | orbit_ref = | epoch = 4 September 2017 (JD 2458000.5) | uncertainty = 0 | observation_arc = 90.10 yr (32,908 days) | aphelion = 3.0172 AU | perihelion = 2.2036 AU | semimajor = 2.6104 AU | eccentricity = 0.1558 | period = 4.22 yr (1,540 days) | mean_anomaly = 190.40° | mean_motion = {{Deg2DMS|0.2337|sup=ms}} / day | inclination = 7.8583° | asc_node = 57.381° | arg_peri = 230.16° | dimensions = {{val|18.37|4.84}} km[6] {{val|25.10|8.95}} km[7] {{val|29.443|0.279}} km[8] 31.46 km {{small|(derived)}}[3] {{val|31.881|0.199}} km[10] {{val|31.90|0.38}} km[11] | rotation = {{val|11.396|0.001}} h[12] {{val|11.3981|0.0005}} h[13] {{val|11.39823|0.00001}} h[14] {{val|11.41|0.01}} h[15] | albedo = 0.0539 {{small|(derived)}}[3] {{val|0.0576|0.0081}}[10] {{val|0.058|0.002}}[11] {{val|0.09|0.06}}[7] {{val|0.15|0.07}}[6] {{val|0.213|0.044}}[8] | spectral_type = S {{small|(assumed)}}[3] | abs_magnitude = 11.20[10][11]{{·}}11.30[3][7]{{·}}11.32[6] }}1119 Euboea ({{IPAc-en|j|uː|ˈ|b|iː|ə}}), provisional designation {{mp|1927 UB}}, is a background asteroid from the central region of the asteroid belt, approximately 30 kilometers in diameter. It was discovered on 27 October 1927, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany.[29] The asteroid was named for the Greek island of Euboea.[2] Orbit and classificationEuboea is a non-family asteroid from the main belt's background population.[4] It orbits the Sun in the central asteroid belt at a distance of 2.2–3.0 AU once every 4 years and 3 months (1,540 days; semi-major axis of 2.61 AU). Its orbit has an eccentricity of 0.16 and an inclination of 8° with respect to the ecliptic. The body's observation arc begins with a recovered observation from the Lowell Observatory in April 1930, more than 2 years after to its official discovery observation.[29]Physical characteristicsEuboea is an assumed stony S-type asteroid.[3]Rotation period and polesIn October 2007, a first rotational lightcurve of Euboea was obtained from photometric observations by astronomers at the Oakley Southern Sky Observatory in Australia. Lightcurve analysis gave a rotation period of 11.41 hours with a brightness variation of 0.50 magnitude ({{small|U=3}}).[15] In April 2010, a similar period of 11.396 hours and an amplitude of 0.46 magnitude was measured by French amateur astronomer Pierre Antonini ({{small|U=3}}).[12] In 2016, two modeled lightcurves were published using photometric data from the Lowell Photometric Database and other sources. The gave a concurring sidereal period of 11.3981 and 11.39823 hours, respectively.[13][14] Each study also determined two respective spin axes of (79.0°, 75.0°) and (282.0°, 55.0°),[13] and (71.0°, 61.0°) and (280.0°, 54.0°)[14] in ecliptic coordinates (λ, β). Diameter and albedoAccording to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Euboea measures between 18.37 and 31.90 kilometers in diameter and its surface has an albedo between 0.0576 and 0.213.[6][7][8][10][11] The Collaborative Asteroid Lightcurve Link derives a low albedo of 0.0539 – typical for carbonaceous C-type asteroids – and a diameter of 31.46 kilometers based on an absolute magnitude of 11.3.[3] NamingThis minor planet was named after Euboea, also known as "Negropont", the largest island of Greece in the Aegean Sea. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ({{small|H 105}}).[2] References1. ^1 2 3 {{cite book |title = Dictionary of Minor Planet Names – (1119) Euboea |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 95 |date = 2007 |url = https://books.google.com/books?id=aeAg1X7afOoC&pg=PA94&dq=1119+Euboea&hl=sv&sa=X&ei=_tzNUqzXHoX_ygOV5YCgBQ&ved=0CEAQ6AEwAg#v=onepage&q=1119%20Euboea&f=false |isbn = 978-3-540-00238-3 |accessdate = 25 January 2018}} [1][2][3][4][5][6][7][8][9][10][11][12][13]2. ^1 2 {{cite web |title = 1119 Euboea (1927 UB) |work = Minor Planet Center |url = https://www.minorplanetcenter.net/db_search/show_object?object_id=1119 |accessdate = 25 January 2018}} 3. ^1 2 {{cite web |title = Asteroids and comets rotation curves – (1119) Euboea |last = Behrend |first = Raoul |publisher = Geneva Observatory |url = http://obswww.unige.ch/~behrend/page3cou.html#001119 |accessdate = 25 January 2018}} 4. ^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 = https://arxiv.org/pdf/1406.6645.pdf |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= 25 January 2018}} 5. ^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 = 25 January 2018}} 6. ^1 2 3 4 5 6 7 {{cite web |title = LCDB Data for (1119) Euboea |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=1119%7CEuboea |accessdate = 25 January 2018}} 7. ^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= 25 January 2018}} 8. ^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. 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5 : Background asteroids|Discoveries by Karl Wilhelm Reinmuth|Minor planets named for places|Named minor planets|Astronomical objects discovered in 1927 |
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