词条 | 1450 Raimonda |
释义 |
| minorplanet = yes | name = 1450 Raimonda | background = #D6D6D6 | image = File:1450Raimonda (Lightcurve Inversion).png | image_size = 265 | caption = Lightcurve-based 3D-model of Raimonda | discovery_ref = | discoverer = Y. Väisälä | discovery_site = Turku Obs. | discovered = 20 February 1938 | mpc_name = (1450) Raimonda | alt_names = 1938 DP{{·}}1934 GJ A915 TF | pronounced = | named_after = {{nowrap|Jean Jacques Raimond, Jr. [2]}} {{small|(Dutch astronomer)}} | mp_category = main-belt{{·}}{{small|(middle)}} [3] background [4] | orbit_ref = | epoch = 4 September 2017 (JD 2458000.5) | uncertainty = 0 | observation_arc = 101.96 yr (37,242 days) | aphelion = 3.0591 AU | perihelion = 2.1642 AU | semimajor = 2.6117 AU | eccentricity = 0.1713 | period = 4.22 yr (1,542 days) | mean_anomaly = 351.45° | mean_motion = {{Deg2DMS|0.2335|sup=ms}} / day | inclination = 4.8635° | asc_node = 74.927° | arg_peri = 13.427° | dimensions = 14.75 km {{small|(derived)}}[3] {{val|14.76|4.56}} km[7] {{val|14.88|0.9}} km[8] {{val|18.481|0.084}} km[9] {{val|18.700|0.068}} km[10] {{val|20.80|1.15}} km[11] | rotation = {{val|12.6344}} h[12] {{val|12.66}} h[13] | albedo = {{val|0.074|0.009}}[11] {{val|0.0878|0.0170}}[10] {{val|0.09|0.10}}[7] {{val|0.094|0.019}}[9] 0.0976 {{small|(derived)}}[3] {{val|0.1387|0.019}}[8] | spectral_type = S {{small|(assumed)}}[3] | abs_magnitude = 11.90[8][10][11]{{·}}12.30[3][7] }}1450 Raimonda, provisional designation {{mp|1938 DP}}, is a background asteroid from the central regions of the asteroid belt, approximately 15 kilometers in diameter. It was discovered on 20 February 1938, by astronomer Yrjö Väisälä at the Iso-Heikkilä Observatory in Turku, Finland.[27] The asteroid was named after Dutch astronomer Jean Jacques Raimond, Jr..[2] Orbit and classificationRaimonda is a non-family asteroid of the main belt's background population.[4] It orbits the Sun in the central asteroid belt at a distance of 2.2–3.1 AU once every 4 years and 3 months (1,542 days). Its orbit has an eccentricity of 0.17 and an inclination of 5° with respect to the ecliptic.The body's observation arc begins with its first identification as {{mp|A915 TF}} at Heidelberg Observatory in October 1915, more than 22 years prior to its official discovery observation at Turku.[27] Physical characteristicsRaimonda is an assumed stony S-type asteroid,[3] despite its rather low albedo. Rotation period and polesIn December 2004, a rotational lightcurve of Raimonda was obtained from photometric observations at the Oakley ({{small|916}}) and Tenagra Observatory ({{small|848}}). Lightcurve analysis gave a rotation period of 12.66 hours with a brightness amplitude of 0.64 (or 0.57 at LCDB) magnitude ({{small|U=2}}), indicative of an elongated shape.[13] In 2013, a lightcurve was modeled from photometric data collected by the Uppsala Asteroid Photometric Catalogue, the Palomar Transient Factory survey, and individual observers, as well as sparse-in-time photometry from the United States Naval Observatory Flagstaff Station, the Catalina Sky Survey in Tucson, and the Roque de los Muchachos Observatory at La Palma. Modelling gave a similar period 12.6344 hours. The study also determined two spin axis of (231.0°, −56.0°) and (71.0°, −60.0°) in ecliptic coordinates (λ, β).[12] Diameter and albedoAccording to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Raimonda measures between 14.76 and 20.80 kilometers in diameter and its surface has an albedo between 0.074 and 0.1387.[7][8][9][10][11] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0976 and a diameter of 14.75 kilometers based on an absolute magnitude of 12.3.[3] NamingThis minor planet was named after Jean Jacques Raimond, Jr. (1903–1961), a Dutch astronomer who was the president of the Dutch Astronomical Society ({{lang-nl|Nederlandse Vereniging voor Weer- en Sterrenkunde}}; Netherlands Association for Meteorology and Astronomy) and director of the Zeiss planetarium at The Hague.[2] The naming was suggested by Belgian astronomer Jean Meeus, and the citation was published by the Minor Planet Center before November 1977 ({{small|M.P.C. 2347}}).[42] The lunar crater Raimond was also named in his honor.[2] References1. ^1 2 3 4 {{cite book |title = Dictionary of Minor Planet Names – (1450) Raimonda |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 116 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_1451 |chapter = (1450) Raimonda }} [1][2][3][4][5][6][7][8][9][10][11][12]2. ^1 2 {{cite web |title = 1450 Raimonda (1938 DP) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=1450 |accessdate = 21 October 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 = 21 October 2017}} 4. ^1 2 3 {{cite journal |display-authors = 6 |first1 = Joseph R. |last1 = Masiero |first2 = T. |last2 = Grav |first3 = A. 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5 : Background asteroids|Discoveries by Yrjö Väisälä|Minor planets named for people|Named minor planets|Astronomical objects discovered in 1938 |
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