| 词条 | 10502 Armaghobs |
| 释义 |
| minorplanet = yes | name = 10502 Armaghobs | background = #FA8072 | image = | image_size = | caption = | discovery_ref = | discovered = 22 August 1987 | discoverer = E. F. Helin | discovery_site = Palomar Obs. | mpc_name = (10502) Armaghobs | alt_names = {{mp|1987 QF|6}}{{·}}{{mp|1980 PJ|2}} {{mp|1994 RJ|29}} | pronounced = {{IPAc-en|ɑr|ˈ|m|ɑː|ə|b|z}} {{respell|ar|MAH|əbs}} | named_after = Armagh Observatory {{small|(in Northern Ireland)}}[2] | mp_category = Mars-crosser [3] | orbit_ref = | epoch = 4 September 2017 (JD 2458000.5) | uncertainty = 0 | observation_arc = 36.73 yr (13,416 days) | aphelion = 3.0439 AU | perihelion = 1.5745 AU | semimajor = 2.3092 AU | eccentricity = 0.3182 | period = 3.51 yr (1,282 days) | mean_anomaly = 145.86° | mean_motion = {{Deg2DMS|0.2809|sup=ms}} / day | inclination = 21.927° | asc_node = 170.23° | arg_peri = 263.26° | dimensions = {{val|2.61|0.59}} km[5] 2.97 km {{small|(calculated)}}[3] | rotation = {{val|24.978|0.002}} h[7] | albedo = 0.20 {{small|(assumed)}}[3] {{val|0.22|0.14}}[5] | spectral_type = S [3]{{·}}Q [11] | abs_magnitude = 15.0[3]{{·}}15.18{{·}}{{val|15.44|0.08}}[11] }}10502 Armaghobs ({{IPAc-en|ɑr|ˈ|m|ɑː|ə|b|z}} {{respell|ar|MAH|əbz}}), provisional designation {{mp|1987 QF|6}}, is an eccentric, rare-type stony asteroid and Mars-crosser from the inner regions of the asteroid belt, approximately 2.6 kilometers in diameter. The asteroid was discovered on 22 August 1987, by American astronomer Eleanor Helin at the Palomar Observatory in California, United States.[15] It was named for the Armagh Observatory in Northern Ireland.[2] Orbit and classificationArmaghobs orbits the Sun in the inner main-belt at a distance of 1.6–3.0 AU once every 3 years and 6 months (1,282 days). Its orbit has an eccentricity of 0.32 and an inclination of 22° with respect to the ecliptic. It was first identified as {{mp|1980 PJ|2}} at ESO's La Silla Observatory in 1980, extending the body's observation arc by 7 years prior to its official discovery observation at Palomar.[15]Physical characteristicsThe Armaghobs has been characterized as a relatively rare Q-type asteroid by Pan-STARRS photometric survey.[11] LightcurveIn February 2013, a rotational lightcurve of Armaghobs was obtained from photometric observations by Kevin Hills at the Riverland Dingo Observatory at Moorook, South Australia. Lightcurve analysis gave a rotation period of {{val|24.978}} hours with a brightness variation of 0.51 magnitude ({{small|U=2}}).[7] Diameter and albedoAccording to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Armaghobs measures 2.61 kilometers in diameter and its surface has an albedo of 0.22.[5] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20, and calculates a diameter of 2.97 kilometers with an absolute magnitude of 15.0.[3] NamingThis minor planet was named after the Armagh Observatory in Northern Ireland. The present-day astronomical research institute was founded by Archbishop Richard Robinson in 1790. The Estonian astronomer Ernst Öpik, after whom 2099 Öpik is named, had been a long-time member of the Observatory. It is also known for the invention of the cup-anemometer by Thomas Robinson, the New General Catalogue compiled by John Dreyer, and Lindsay's Armagh-Dunsink-Harvard telescope.[2] The official naming citation was published by the Minor Planet Center on 9 January 2001 {{small|(M.P.C. 41937)}}.[24] References1. ^1 2 3 {{cite book |title = Dictionary of Minor Planet Names – (10502) Armaghobs |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 736 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_8003 |chapter = (10502) Armaghobs }} [1][2][3][4][5][6][7]2. ^1 2 {{cite web |title = 10502 Armaghobs (1987 QF6) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=10502 |accessdate = 28 April 2016}} 3. ^1 2 3 4 5 6 {{cite web |title = LCDB Data for (10502) Armaghobs |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=10502%7CArmaghobs |accessdate = 28 April 2016}} 4. ^1 {{cite web |title = MPC/MPO/MPS Archive |work = Minor Planet Center |url = http://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html |accessdate = 28 April 2016}} 5. ^1 2 {{Cite journal |author = Hills, Kevin |date = January 2014 |title = Asteroid Lightcurve Analysis at Riverland Dingo Observatory (RDO): 2013 Results |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014MPBu...41....2H |journal = The Minor Planet Bulletin |volume = 41 |issue = 1 |pages = 2–3 |issn = 1052-8091 |bibcode = 2014MPBu...41....2H |access-date= 28 April 2016}} 6. ^1 2 3 {{cite journal |display-authors = 6 |first1 = Peter |last1 = Veres |first2 = Robert |last2 = Jedicke |first3 = Alan |last3 = Fitzsimmons |first4 = Larry |last4 = Denneau |first5 = Mikael |last5 = Granvik |first6 = Bryce |last6 = Bolin |first7 = Serge |last7 = Chastel |first8 = Richard J. |last8 = Wainscoat |first9 = William S. |last9 = Burgett |first10 = Kenneth C. |last10 = Chambers |first11 = Heather |last11 = Flewelling |first12 = Nick |last12 = Kaiser |first13 = Eugen A. |last13 = Magnier |first14 = Jeff S. |last14 = Morgan |first15 = Paul A. |last15 = Price |first16 = John L. |last16 = Tonry |first17 = Christopher |last17 = Waters |date = November 2015 |title = Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V |journal = Icarus |volume = 261 |pages = 34–47 |bibcode = 2015Icar..261...34V |doi = 10.1016/j.icarus.2015.08.007 |arxiv = 1506.00762 |access-date= 28 April 2016}} 7. ^1 2 3 {{cite journal |display-authors = 6 |first1 = C. R. |last1 = Nugent |first2 = A. |last2 = Mainzer |first3 = J. |last3 = Bauer |first4 = R. M. |last4 = Cutri |first5 = E. A. |last5 = Kramer |first6 = T. |last6 = Grav |first7 = J. |last7 = Masiero |first8 = S. |last8 = Sonnett |first9 = E. L. |last9 = Wright |date = September 2016 |title = NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016AJ....152...63N |journal = The Astronomical Journal |volume = 152 |issue = 3 |page = 12 |bibcode = 2016AJ....152...63N |doi = 10.3847/0004-6256/152/3/63 |arxiv = 1606.08923 |accessdate = 23 June 2017}} }} External links
5 : Mars-crossing asteroids|Discoveries by Eleanor F. Helin|Minor planets named for places|Named minor planets|Astronomical objects discovered in 1987 |
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