| 词条 | 16879 Campai |
| 释义 |
| minorplanet = yes | name = 16879 Campai | background = #D6D6D6 | image = | image_size = | caption = | discovery_ref = [1] | discovered = 24 January 1998 | discoverer = A. Boattini M. Tombelli | discovery_site = Pistoia Mountains Obs. | mpc_name = (16879) Campai | alt_names = {{mp|1998 BH|10}} | named_after = Paolo Campai [2] {{nowrap|{{small|(Italian amateur astronomer)}}}} | mp_category = {{nowrap|main-belt [1]{{·}}{{small|(middle)}}}} Witt [5] | orbit_ref = | epoch = 23 March 2018 (JD 2458200.5) | uncertainty = 0 | observation_arc = 39.78 yr (14,529 d) | aphelion = 2.8229 AU | perihelion = 2.6938 AU | semimajor = 2.7584 AU | eccentricity = 0.0234 | period = 4.58 yr (1,673 d) | mean_anomaly = 349.41° | mean_motion = {{Deg2DMS|0.2151|sup=ms}} / day | inclination = 7.1221° | asc_node = 47.289° | arg_peri = 230.77° | mean_diameter = {{val|10.61|u=km}} {{small|(calculated)}}[7] | rotation = {{val|314.2468|4.9149|ul=h}}[8] | albedo = 0.057 {{small|(assumed)}}[7] | spectral_type = S [10]{{·}}C {{small|(assumed)}}[7] | abs_magnitude = {{val|12.97|0.46}}[10] {{val|13.150|0.005}}[8] 13.3{{·}}13.6[7] }}16879 Campai, provisional designation {{mp|1998 BH|10}}, is a stony Witt asteroid and slow rotator from the central region of the asteroid belt, approximately {{convert|10|km|mi|abbr=off|sigfig=1|sp=us}} in diameter. The S-type asteroid was discovered on 24 January 1998, by Italian astronomers Andrea Boattini and Maura Tombelli at the Pistoia Mountains Astronomical Observatory in San Marcello Pistoiese, Tuscany, central Italy.[1] It was named for Italian amateur astronomer Paolo Campai.[2] Orbit and classificationCampai is a member of the Witt family ({{small|535}}),[5] a large family of (predominantly) stony asteroids with more than 1,600 known members.[19] It orbits the Sun in the central main-belt at a distance of 2.7–2.8 AU once every 4 years and 7 months (1,673 days; semi-major axis of 2.76 AU). Its orbit has an eccentricity of 0.02 and an inclination of 7° with respect to the ecliptic. The first precovery was obtained at Siding Spring Observatory in July 1977, extending the asteroid's observation arc by 22 years prior to its discovery.[1]Physical characteristicsCampai has been characterized as a common, stony S-type asteroid,[7] in line with the overall spectral type for members of the Witt family.[19]{{rp|23}} Slow rotatorIn October 2010, a rotational lightcurve of Campai was obtained from photometric observations made at the Palomar Transient Factory in California. It rendered an exceptionally long period of {{val|314.2468|4.9149}} hours with a brightness amplitude of 0.68 magnitude ({{small|U=2}}).[8] While the result is based on less than full coverage, and may be refined by future observations, Campai is one of the slowest rotating asteroids known to exist. Diameter and albedoThe Collaborative Asteroid Lightcurve Link calculates a diameter of 10.5 kilometers with an absolute magnitude of 13.6 and an assumed standard albedo for a carbonaceous asteroid of 0.057.[7] NamingThis minor planet was named for Italian amateur astronomer Paolo Campai (born 1957) from Florence, who is specialized in teaching and astrophotography. Both discoverers made his acquaintance near Florence on a night in 1985, while observing comet 1P/Halley and α Phoenicis.[2] The approved naming citation was published by the Minor Planet Center on 6 August 2003 ({{small|M.P.C. 49281}}).[27] References1. ^1 2 3 {{cite book |title = Dictionary of Minor Planet Names – (16879) Campai, Addendum to Fifth Edition: 2003–2005 |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 102 |date = 2006 |isbn = 978-3-540-34360-8 |doi = 10.1007/978-3-540-34361-5_1067 |chapter = (16879) Campai [2.76, 0.02, 7.1] }} [1][2][3][4][5][6][7][8]2. ^1 2 3 4 {{cite web |title = 16879 Campai (1998 BH10) |work = Minor Planet Center |url = https://www.minorplanetcenter.net/db_search/show_object?object_id=16879 |accessdate = 22 March 2016}} 3. ^1 {{cite web |title = MPC/MPO/MPS Archive |work = Minor Planet Center |url = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html |accessdate = 17 May 2016}} 4. ^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 = 18 April 2018}} 5. ^1 2 {{Cite book |first1 = D. |last1 = Nesvorný |first2 = M. |last2 = Broz |first3 = V. |last3 = Carruba |date = December 2014 |title = Identification and Dynamical Properties of Asteroid Families |journal = Asteroids IV |pages = 297–321 |bibcode = 2015aste.book..297N |doi = 10.2458/azu_uapress_9780816532131-ch016 |arxiv = 1502.01628 |isbn = 9780816532131 }} 6. ^1 2 3 4 5 6 {{cite web |title = LCDB Data for (16879) Campai |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=16879%7CCampai |accessdate = 17 May 2016}} 7. ^1 2 3 {{cite journal |display-authors = 6 |first1 = Adam |last1 = Waszczak |first2 = Chan-Kao |last2 = Chang |first3 = Eran O. |last3 = Ofek |first4 = Russ |last4 = Laher |first5 = Frank |last5 = Masci |first6 = David |last6 = Levitan |first7 = Jason |last7 = Surace |first8 = Yu-Chi |last8 = Cheng |first9 = Wing-Huen |last9 = Ip |first10 = Daisuke |last10 = Kinoshita |first11 = George |last11 = Helou |first12 = Thomas A. |last12 = Prince |first13 = Shrinivas |last13 = Kulkarni |date = September 2015 |title = Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry |journal = The Astronomical Journal |volume = 150 |issue = 3 |page = 35 |bibcode = 2015AJ....150...75W |doi = 10.1088/0004-6256/150/3/75 |arxiv = 1504.04041 }} 8. ^1 2 {{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 |journal = Icarus |volume = 261 |pages = 34–47 |bibcode = 2015Icar..261...34V |doi = 10.1016/j.icarus.2015.08.007 |arxiv = 1506.00762 }} }} External links
7 : Witt asteroids|Discoveries by Andrea Boattini|Discoveries by Maura Tombelli|Minor planets named for people|Named minor planets|Slow rotating minor planets|Astronomical objects discovered in 1998 |
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