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词条 2956 Yeomans
释义

  1. Orbit and classification

  2. Physical characteristics

      Rotation period    Diameter and albedo  

  3. Naming

  4. In popular culture

  5. References

  6. External links

{{Infobox planet
| minorplanet = yes
| name = 2956 Yeomans
| background = #D6D6D6
| image =
| image_size =
| caption =
| discovery_ref =  
| discoverer = E. Bowell
| discovery_site = Anderson Mesa Stn.
| discovered = 28 April 1982
| mpc_name = (2956) Yeomans
| alt_names = {{mp|1982 HN|1}}{{·}}1950 JG
{{mp|1974 RN|1}}{{·}}{{mp|1977 DL|10}}
| pronounced =
| named_after = Donald Keith Yeomans
{{small|(American astronomer)}}[2]
| mp_category = main-belt{{·}}{{small|(middle)}} [3]
| orbit_ref =  
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 0
| observation_arc = 42.45 yr (15,504 days)
| aphelion = 3.0155 AU
| perihelion = 2.5142 AU
| semimajor = 2.7648 AU
| eccentricity = 0.0907
| period = 4.60 yr (1,679 days)
| mean_anomaly = 229.98°
| mean_motion = {{Deg2DMS|0.2144|sup=ms}} / day
| inclination = 2.8688°
| asc_node = 112.21°
| arg_peri = 124.34°
| dimensions = {{val|9.350|0.183}} km[5][6]
11.30 km {{small|(derived)}}[3]
| rotation = {{val|3.4|0.1}} h[8]
{{val|3.509|0.0158}} h[9]
| albedo = 0.20 {{small|(assumed)}}[3]
{{val|0.292|0.014}}[5][6]
| spectral_type = SMASS {{=}} Sr {{·}}S [3]
| abs_magnitude = 12.1[6][3]{{·}}12.3{{·}}{{val|12.39|0.07}}[18]{{·}}{{val|12.878|0.003}} {{small|(S)}}[9]
}}2956 Yeomans, provisional designation {{mp|1982 HN|1}}, is a stony asteroid from the central regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 28 April 1982, by astronomer Edward Bowell at the Anderson Mesa Station of the Lowell Observatory in near Flagstaff, Arizona.[20] It was named after American astronomer Donald Yeomans.[2]

Orbit and classification

Yeomans is a non-family asteroid from the asteroid belt's background population. It orbits the Sun in the central main-belt at a distance of 2.5–3.0 AU once every 4 years and 7 months (1,679 days). Its orbit has an eccentricity of 0.09 and an inclination of 3° with respect to the ecliptic.

The asteroid was first identified as {{mp|1950 JG}} at the Johannesburg Observatory in May 1950. The body's observation arc begins with its identification as {{mp|1974 RN|1}} at Crimea–Nauchnij in September 1974, almost 8 years prior to its official discovery observation at Anderson Mesa.[20]

Physical characteristics

In the SMASS classification, Yeomans is an Sr-subtype that transitions from the stony S-types to the uncommon R-type asteroids.

Rotation period

In April 2014, a rotational lightcurve of Yeomans was obtained from photometric observations made at the Isaac Aznar Observatory in Spain. Lightcurve analysis gave a rotation period of 3.4 hours with a brightness variation of 0.28 magnitude ({{small|U=2}}).[8] A similar period of 3.509 hours with an amplitude of 0.24 magnitude was found by astronomers at the Palomar Transient Factory in October 2011 ({{small|U=2}}).[9]

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Yeomans measures 9.350 kilometers in diameter and its surface has an albedo of 0.292.[5][6] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and derives a diameter of 11.30 kilometers based on an absolute magnitude of 12.1.[3]

Naming

This minor planet was named after American astronomer Donald Keith Yeomans, a celestial mechanician at JPL and astrometry-expert of the International Halley Watch.[2] The official naming citation was published by the Minor Planet Center on 18 September 1986 ({{small|M.P.C. 11158}}).[31]

In popular culture

  • In the 1995 Sliders first-season episode "Last Days", asteroid 2956 Yeomans (misspelled Yeoman in the episode) was the asteroid responsible for almost destroying the Earth by impact.{{citation needed|date=September 2017}}

References

1. ^{{cite book |title = Dictionary of Minor Planet Names – (2956) Yeomans |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 243 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_2957 |chapter = (2956) Yeomans }}
2. ^{{cite web |title = 2956 Yeomans (1982 HN1) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=2956 |accessdate = 13 September 2017}}
3. ^{{cite web |title = MPC/MPO/MPS Archive |work = Minor Planet Center |url = http://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html |accessdate = 13 September 2017}}
4. ^{{cite journal |display-authors = 6 |first1 = Joseph R. |last1 = Masiero |first2 = A. K. |last2 = Mainzer |first3 = T. |last3 = Grav |first4 = J. M. |last4 = Bauer |first5 = R. M. |last5 = Cutri |first6 = J. |last6 = Dailey |first7 = P. R. M. |last7 = Eisenhardt |first8 = R. S. |last8 = McMillan |first9 = T. B. |last9 = Spahr |first10 = M. F. |last10 = Skrutskie |first11 = D. |last11 = Tholen |first12 = R. G. |last12 = Walker |first13 = E. L. |last13 = Wright |first14 = E. |last14 = DeBaun |first15 = D. |last15 = Elsbury |first16 = T., IV |last16 = Gautier |first17 = S. |last17 = Gomillion |first18 = A. |last18 = Wilkins |date = November 2011 |title = Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M |journal = The Astrophysical Journal |volume = 741 |issue = 2 |page = 20 |bibcode = 2011ApJ...741...68M |doi = 10.1088/0004-637X/741/2/68 |arxiv = 1109.4096 |access-date= 13 September 2017}}
5. ^{{cite web |title = LCDB Data for (2956) Yeomans |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=2956%7CYeomans |accessdate = 13 September 2017}}
6. ^{{cite journal |display-authors = 6 |first1 = A. |last1 = Mainzer |first2 = T. |last2 = Grav |first3 = J. |last3 = Masiero |first4 = E. |last4 = Hand |first5 = J. |last5 = Bauer |first6 = D. |last6 = Tholen |first7 = R. S. |last7 = McMillan |first8 = T. |last8 = Spahr |first9 = R. M. |last9 = Cutri |first10 = E. |last10 = Wright |first11 = J. |last11 = Watkins |first12 = W. |last12 = Mo |first13 = C. |last13 = Maleszewski |date = November 2011 |title = NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results |journal = The Astrophysical Journal |volume = 741 |issue = 2 |page = 25 |bibcode = 2011ApJ...741...90M |doi = 10.1088/0004-637X/741/2/90 |arxiv = 1109.6407 }}
7. ^{{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 |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W |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 |access-date= 13 September 2017}}
8. ^{{Cite journal |author = Macias, Amadeo Aznar |date = January 2015 |title = Asteroid Lightcurve Analysis at Isaac Aznar Observatory Aras De Los Olmos, Valencia, Spain |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015MPBu...42....4M |journal = The Minor Planet Bulletin |volume = 42 |issue = 1 |pages = 4–6 |issn = 1052-8091 |bibcode = 2015MPBu...42....4M |access-date= 13 September 2017}}
9. ^{{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= 13 September 2017}}
[1][2][3][4][5][6][7][8][9]

}}

External links

  • Asteroid Lightcurve Database (LCDB), query form (info)
  • [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
  • Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
  • Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
  • {{JPL small body}}
{{Minor planets navigator |2955 Newburn |number=2956 |2957 Tatsuo}}{{Small Solar System bodies}}{{DEFAULTSORT:Yeomans}}

6 : Background asteroids|Discoveries by Edward L. G. Bowell|Minor planets named for people|Named minor planets|Sr-type asteroids (SMASS)|Astronomical objects discovered in 1982

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