| 词条 | 3192 A'Hearn |
| 释义 |
| minorplanet = yes | name = 3192 A'Hearn | background = #D6D6D6 | image = | image_size = | caption = | discovery_ref = | discovered = 30 January 1982 | discoverer = E. Bowell | discovery_site = Anderson Mesa Stn. | mpc_name = (3192) A'Hearn | alt_names = {{mp|1982 BY|1}}{{·}}1975 JN | named_after = Michael A'Hearn {{small|(astronomer)}}[2] | mp_category = main-belt{{·}}{{small|(inner)}} [3] | orbit_ref = | epoch = 4 September 2017 (JD 2458000.5) | uncertainty = 0 | observation_arc = 41.29 yr (15,081 days) | aphelion = 2.7782 AU | perihelion = 1.9767 AU | semimajor = 2.3774 AU | eccentricity = 0.1686 | period = 3.67 yr (1,339 days) | mean_anomaly = 251.29° | mean_motion = {{Deg2DMS|0.2689|sup=ms}} / day | inclination = 2.8791° | asc_node = 56.726° | arg_peri = 91.584° | dimensions = {{val|4.361|0.700}}[5] 5.66 km {{small|(calculated)}}[3] | rotation = {{val|3.160|}} h[7] | albedo = 0.20 {{small|(assumed)}}[3] {{val|0.354|0.166}}[5] | spectral_type = SMASS = C {{·}}C [3] | abs_magnitude = 13.6[3] }}3192 A'Hearn, provisional designation {{mp|1982 BY|1}}, is a carbonaceous asteroid from the inner regions of the asteroid belt, about 6 kilometers in diameter. It was discovered by American astronomer Edward Bowell at Lowell's Anderson Mesa Station in Flagstaff, Arizona, on 30 January 1982.[14] Orbit and classificationThe C-type asteroid orbits the Sun in the inner main-belt at a distance of 2.0–2.8 AU once every 3 years and 8 months (1,339 days). Its orbit has an eccentricity of 0.17 and an inclination of 3° with respect to the ecliptic. The first precovery was obtained at El Leoncito in 1975, extending the asteroid's observation arc by 7 years prior to its discovery.[14] Physical characteristicsA rotational lightcurve for this asteroid was obtained from photometric observations made by Japanese astronomer Sunao Hasegawa, using the 1.05-meter Schmidt telescope at Kiso Observatory in March 2004. It showed a well-defined rotation period of 3.16 hours with a brightness amplitude of 0.20 in magnitude ({{small|U=3}}).[7] According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid measures 4.4 kilometers in diameter and its surface has a high albedo of 0.354.[5] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 – despite the fact that the body has been classified as a carbonaceous C-type – and calculates a diameter of 5.7 kilometers with an absolute magnitude of 13.6.[3] NamingThis minor planet was named for American cometary astronomer and professor of astronomy at CMNS, Michael A'Hearn (b. 1940), known for his contribution to cometary science, especially for his wide-range spectroscopic and spectrophotometric observations. He participated in the space-based EPOXI and IUE mission, which, in 1983, detected for the first time the presence of cometary diatomic sulfur while observing Comet IRAS–Araki–Alcock{{'s}} spectrum.[2][21] The official naming citation was published by the Minor Planet Center on 22 June 1986 ({{small|M.P.C. 10848}}).[22] References1. ^1 2 {{cite book |title = Dictionary of Minor Planet Names – (3192) A'Hearn |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 265 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_3193 |chapter = (3192) A'Hearn }} [1][2][3][4][5][6][7]2. ^1 2 {{cite web |title = 3192 A'Hearn (1982 BY1) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=3192 |accessdate = 3 May 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 = 3 May 2016}} 4. ^1 2 3 4 5 6 {{cite web |title = LCDB Data for (3192) A'Hearn |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=3192%7CA'Hearn |accessdate = 3 May 2016}} 5. ^1 {{Cite journal |first1 = Daniel C. |last1 = Boice |first2 = Celine |last2 = Reyle |date = December 2002 |title = The Nature of Diatomic Sulfur in Comets |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2003IAUJD..14E..38B |journal = Formation of Cometary Material |volume = 25 |pages = E38 |bibcode = 2003IAUJD..14E..38B |access-date= 3 May 2016}} 6. ^1 2 {{cite journal |display-authors = 6 |first1 = S. |last1 = Hasegawa |first2 = S. |last2 = Miyasaka |first3 = H. |last3 = Mito |first4 = Y. |last4 = Sarugaku |first5 = T. |last5 = Ozawa |first6 = D. |last6 = Kuroda |first7 = S. |last7 = Nishihara |first8 = A. |last8 = Harada |first9 = M. |last9 = Yoshida |first10 = K. |last10 = Yanagisawa |first11 = Y. |last11 = Shimizu |first12 = S. |last12 = Nagayama |first13 = H. |last13 = Toda |first14 = K. |last14 = Okita |first15 = N. |last15 = Kawai |first16 = M. |last16 = Mori |first17 = T. |last17 = Sekiguchi |first18 = M. |last18 = Ishiguro |first19 = M. |last19 = Abe |date = May 2012 |title = Lightcurve Survey of V-Type Asteroids. Observations Until 2005 |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012arXiv1204.0548H |journal = Asteroids |volume = 1667 |pages = 6281 |bibcode = 2012LPICo1667.6281H |arxiv = 1204.0548 |access-date= 3 May 2016}} 7. ^1 2 3 {{Cite journal |display-authors = 6 |first1 = C. R. |last1 = Nugent |first2 = A. |last2 = Mainzer |first3 = J. |last3 = Masiero |first4 = J. |last4 = Bauer |first5 = R. M. |last5 = Cutri |first6 = T. |last6 = Grav |first7 = E. |last7 = Kramer |first8 = S. |last8 = Sonnett |first9 = R. |last9 = Stevenson |first10 = E. L. |last10 = Wright |date = December 2015 |title = NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJ...814..117N |journal = The Astrophysical Journal |volume = 814 |issue = 2 |page = 13 |bibcode = 2015ApJ...814..117N |doi = 10.1088/0004-637X/814/2/117 |arxiv = 1509.02522 |access-date= 6 December 2016}} }} External links
6 : Nysa asteroids|Discoveries by Edward L. G. Bowell|Minor planets named for people|Named minor planets|C-type asteroids (SMASS)|Astronomical objects discovered in 1982 |
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