| 词条 | 1294 Antwerpia |
| 释义 |
| minorplanet = yes | name = 1294 Antwerpia | background = #D6D6D6 | image = | caption = | discovery_ref = | discoverer = E. Delporte | discovery_site = Uccle Obs. | discovered = 24 October 1933 | mpc_name = (1294) Antwerpia | alt_names = {{mp|1933 UB|1}}{{·}}1930 AF 1932 LC{{·}}{{mp|1964 VA|2}} 1964 XF{{·}}A917 DB | pronounced = | named_after = Antwerp {{small|(Belgian city)}}[2] | mp_category = main-belt{{·}}{{small|(middle)}} [3] | orbit_ref = | epoch = 4 September 2017 (JD 2458000.5) | uncertainty = 0 | observation_arc = 99.63 yr (36,391 days) | aphelion = 3.3156 AU | perihelion = 2.0572 AU | semimajor = 2.6864 AU | eccentricity = 0.2342 | period = 4.40 yr (1,608 days) | mean_anomaly = 16.166° | mean_motion = {{Deg2DMS|0.2238|sup=ms}} / day | inclination = 8.7271° | asc_node = 81.133° | arg_peri = 313.22° | dimensions = {{val|27.82|7.33}} km[5] 34.40 km {{small|(derived)}}[3] {{val|34.71|3.0}} km[7] {{val|34.80|0.66}} km[8] {{val|37.199|0.134}} km[9] {{val|40.717|0.350}} km[10] | rotation = {{val|6.618}} h {{small|(very poor)}}[11] {{val|6.620|0.005}} h[12]{{efn|name=lightcurve-plot}} {{val|6.623|0.001}} h[13] {{val|6.624|0.0030}} h[14] {{val|6.625|0.001}} h[15] {{val|6.62521|0.00001}} h[16] {{val|6.63|0.01}} h[17] | albedo = 0.0783 {{small|(derived)}}[3] {{val|0.0887|0.0283}}[10] {{val|0.10|0.09}}[5] {{val|0.117|0.024}}[9] {{val|0.1220|0.024}}[7] {{val|0.125|0.005}}[8] | spectral_type = SMASS {{=}} C [3] | abs_magnitude = 10.20[7][8][10]{{·}}{{val|10.549|0.003}} {{small|(R)}}[14]{{·}}10.60[5]{{·}}10.7[3]{{·}}{{val|10.85|0.29}}[33] }}1294 Antwerpia, provisional designation {{mp|1933 UB|1}}, is a carbonaceous asteroid from the central regions of the asteroid belt, approximately 35 kilometers in diameter. It was discovered on 24 October 1933, by astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle.[34] The asteroid was named for the Belgian city of Antwerp.[2] Orbit and classificationAntwerpia is an asteroid of the background population that does not belong to any known asteroid family. It orbits the Sun in the central main belt at a distance of 2.1–3.3 AU once every 4 years and 5 months (1,608 days). Its orbit has an eccentricity of 0.23 and an inclination of 9° with respect to the ecliptic.In February 2017, the asteroid was first identified as {{mp|A917 DB}} at Heidelberg Observatory, where the body's observation arc begins one month later in March 1917.[34] Physical characteristicsIn the SMASS classification, Antwerpia is a carbonaceous C-type asteroid. Rotation period and polesSeveral rotational lightcurves of Antwerpia have been obtained from photometric observations since 2005. Lightcurve analysis gave a rotation period of 6.63 hours with a brightness variation of 0.42 magnitude ({{small|U=1/3/3-/3-/3/2}}).[11][12][13][14][15][17]{{efn|name=lightcurve-plot}} A 2016-published lightcurve, using modeled photometric data from the Lowell Photometric Database (LPD), gave a concurring period of 6.62521 hours ({{small|U=n.a.}}), as well as two spin axis of (128.0°, −66.0°) and (246.0°, −76.0°) in ecliptic coordinates (λ, β).[16] 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, Antwerpia measures between 27.82 and 40.717 kilometers in diameter and its surface has an albedo between 0.0887 and 0.125.[5][7][8][9][10] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0783 and a diameter of 34.40 kilometers based on an absolute magnitude of 10.7.[3] NamingThis minor planet was named after the city of Antwerp in Flanders, the Dutch-speaking part of Belgium. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ({{small|H 118}}).[2] Notes{{notelist|refs={{efn|name=lightcurve-plot|1=Lightcurve plot of (1297) Quadea with a rotation period {{val|6.62}} hours and a brightness amplitude of {{val|0.42}} mag. Quality Code of 3. Taken by Robert Stephens (2014) at U81/CS3. Summary figures at LCDB}}}} References1. ^1 2 3 {{cite book |title = Dictionary of Minor Planet Names – (1294) Antwerpia |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 106 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_1295 |chapter = (1294) Antwerpia }} [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]2. ^1 2 {{cite web |title = 1294 Antwerpia (1933 UB1) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=1294 |accessdate = 14 September 2017}} 3. ^1 2 {{cite web |title = Asteroids and comets rotation curves – (1294) Antwerpia |last = Behrend |first = Raoul |publisher = Geneva Observatory |url = http://obswww.unige.ch/~behrend/page3cou.html#001294 |accessdate = 14 September 2017}} 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 = 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= 14 September 2017}} 5. ^1 2 3 4 5 6 {{cite web |title = LCDB Data for (1294) Antwerpia |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=1294%7CAntwerpia |accessdate = 14 September 2017}} 6. ^1 2 3 4 {{cite journal |display-authors = 6 |first1 = C. R. |last1 = Nugent |first2 = A. |last2 = Mainzer |first3 = J. |last3 = Masiero |first4 = J. |last4 = Bauer |first5 = R. 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7 : Background asteroids|Discoveries by Eugène Joseph Delporte|Minor planets named for places|Named minor planets|Antwerp|C-type asteroids (SMASS)|Astronomical objects discovered in 1933 |
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