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词条 2483 Guinevere
释义

  1. Classification and orbit

      Hildian asteroid    Orbit  

  2. Physical characteristics

      Lightcurves    Diameter and albedo  

  3. Naming

  4. Notes

  5. References

  6. External links

{{Infobox planet
| minorplanet = yes
| name = 2483 Guinevere
| background = #D6D6D6
| image =
| image_size =
| caption =
| discovery_ref =  
| discovered = 17 August 1928
| discoverer = M. F. Wolf
| discovery_site = Heidelberg Obs.
| mpc_name = (2483) Guinevere
| alt_names = 1928 QB{{·}}1929 VR
{{mp|1955 FZ|1}}{{·}}1961 VM
1961 XR{{·}}1971 BM
1971 FN{{·}}1977 XL
A921 WF
| pronounced = {{IPAc-en|ˈ|ɡ|w|ɪ|n|ᵻ|v|ɪər}}
| named_after = Guinevere
{{small|(Arthurian legend)}}[2]
| mp_category = main-belt{{·}}{{small|(outer)}} 
Hilda [4][5][6]
| orbit_ref =  
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 0
| observation_arc = 88.51 yr (32,327 days)
| aphelion = 5.0733 AU
| perihelion = 2.8687 AU
| semimajor = 3.9710 AU
| eccentricity = 0.2776
| period = 7.91 yr (2,890 days)
| mean_anomaly = 4.7663°
| mean_motion = {{Deg2DMS|0.1246|sup=ms}} / day
| inclination = 4.5000°
| asc_node = 252.04°
| arg_peri = 183.36°
| jupiter_moid = 0.2309 AU
| dimensions = {{val|35.687|0.180}} km[8]
{{val|42.42|2.89}} km[9]
44.14 km {{small|(derived)}}[6]
{{val|44.17|3.9}} km[11]
| rotation = {{val|14.730|0.002}} h[12]{{efn|name=lightcurve-plot-CS3}}
{{val|14.73081|0.00001}} h[13]
{{val|14.733}} h[14]
| albedo = 0.0396 {{small|(derived)}}[6]
{{val|0.0433|0.009}}[11]
{{val|0.048|0.007}}[9]
{{val|0.067|0.011}}[8]
| spectral_type = C [6]
| abs_magnitude = {{val|10.60|0.38}}[20]{{·}}10.8[9][11]{{·}}10.9[6]
}}

2483 Guinevere ({{IPAc-en|ˈ|ɡ|w|ɪ|n|ᵻ|v|ɪər}}), provisional designation {{mp|1928 QB}}, is a dark and elongated Hildian asteroid from the outermost regions of the asteroid belt, approximately 43 kilometers in diameter.

The asteroid was discovered on 17 August 1928, by German astronomer Max Wolf at Heidelberg Observatory in southwest Germany.[4] In the 1980s, it was named after King Arthur's wife Guinevere.[2]

Classification and orbit

Hildian asteroid

Located in the outermost part of the main-belt, Guinevere is a member of the Hilda family, a large group of asteroids that are thought to have originated from the Kuiper belt. They orbit in a 3:2 orbital resonance with the gas giant Jupiter, meaning that for every 2 orbits Jupiter completes around the Sun, a Hildian asteroid will complete 3 orbits.

Based on a numerical integration, Guinevere is the Hilda asteroid with the greatest chance of impacting with another asteroid.[5] About 74% of the impact risk occurs when Guinevere is relatively close to perihelion and approaches the main-belt asteroids.

Orbit

Guinevere orbits the Sun at a distance of 2.9–5.1 AU once every 7 years and 11 months (2,890 days). Its orbit has an eccentricity of 0.28 and an inclination of 5° with respect to the ecliptic. In November 1921, it was first identified as {{mp|A921 WF}} at Bergedorf Observatory in Hamburg, Germany. The body's observation arc begins two nights after its official discovery observation at Heidelberg in August 1928.[4]

Physical characteristics

Lightcurves

During a survey of Hilda asteroids in the 1990s, a rotational lightcurve of Guinevere was obtained from photometric observations by an international collaboration of Swedish, German and Italian astronomers. Lightcurve analysis gave a well-defined rotation period of 14.733 hours with a brightness variation of 1.38 magnitude ({{small|U=3}}).[14]

Guinevere is a high-amplitude Hilda. A high brightness amplitude typically indicates that the body is elongated and has a non-spheroidal shape. Thermal emission measurements from the Wide-field Infrared Survey Explorer (WISE) gave an even higher amplitude of 1.53 magnitude.[31]{{rp|15,24}}

In October 2016, another lightcurve of Guinevere was obtained at the Center for Solar System Studies (CS3), Landers, in the Southern California desert, during a photometric survey conducted by American astronomers Dan Coley, Robert Stephens and Brian Warner ({{small|U80–U82}}). It showed a period of 14.730 hours with an amplitude of 0.89 magnitude ({{small|U=3-}}).[12]{{efn|name=lightcurve-plot-CS3}}

A 2016-published lightcurve, using modeled photometric data from the Lowell Photometric Database (LPD), gave a concurring period of 14.73081 hours ({{small|U=n.a.}}), as well as two spin axis of (19.0°, 70.0°) and (194.0°, 59.0°) in ecliptic coordinates (λ, β).[13]

Diameter and albedo

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and the NEOWISE mission of NASA's WISE spacecraft, Guinevere measures between 35.687 and 44.17 kilometers in diameter and its surface has an albedo between 0.0433 and 0.067.[8][9][11] The Collaborative Asteroid Lightcurve Link agrees with IRAS and derives an albedo of 0.0396 and a diameter of 44.14 kilometers based on an absolute magnitude of 10.9.[6]

Naming

This minor planet was named after Guinevere, the wife of King Arthur and the lover of Lancelot in Arthurian legend, after whom the minor planets {{MoMP|2041|(2041)}} and {{MoMP|2597|(2597)}} are named. This affair lead to civil war between King Arthur and his chief knight, who rescued Guinevere from burning at the stake, and initiated the downfall of Arthur's idyllic kingdom.[2]

The name was suggested by F. Pilcher and the proposal was submitted by Edward Bowell, who also made the object's key identification.[2] The approved naming citation was published by the Minor Planet Center on 24 July 1983, ({{small|M.P.C. 8064}}).[40]

Notes

{{notelist|refs={{efn|name=lightcurve-plot-CS3|1=Lightcurve plot of (2483) Guinevere by B.D. Warner, CS-Palmer Divide Station (October 2016), with a rotation period of {{val|14.730|0.002}} hours and a brightness amplitude of {{val|0.089}} mag (Quality Code: 3-). Summary figures at Collaborative Asteroid Lightcurve Link (CALL)}}

}}

References

1. ^1 2 3 4 {{cite book |title = Dictionary of Minor Planet Names – (2483) Guinevere |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 202 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_2484 |chapter = (2483) Guinevere }}
2. ^1 2 3 {{cite web |title = 2483 Guinevere (1928 QB) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=2483 |accessdate = 7 July 2017}}
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 = 7 July 2017}}
4. ^1 2 {{Cite journal |author = Dahlgren, M. |date = August 1998 |title = A study of Hilda asteroids. III. Collision velocities and collision frequencies of Hilda asteroids |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1998A&A...336.1056D |journal = Astronomy and Astrophysics |volume = 336 |pages = 1056–1064 |bibcode = 1998A&A...336.1056D |access-date= 7 July 2017}}
5. ^1 2 3 {{Cite journal |display-authors = 6 |first1 = T. |last1 = Grav |first2 = A. K. |last2 = Mainzer |first3 = J. |last3 = Bauer |first4 = J. |last4 = Masiero |first5 = T. |last5 = Spahr |first6 = R. S. |last6 = McMillan |first7 = R. |last7 = Walker |first8 = R. |last8 = Cutri |first9 = E. |last9 = Wright |first10 = P. R. |last10 = Eisenhardt |first11 = E. |last11 = Blauvelt |first12 = E. |last12 = DeBaun |first13 = D. |last13 = Elsbury |first14 = T. |last14 = Gautier |first15 = S. |last15 = Gomillion |first16 = E. |last16 = Hand |first17 = A. |last17 = Wilkins |date = January 2012 |title = WISE/NEOWISE Observations of the Hilda Population: Preliminary Results |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...744..197G |journal = The Astrophysical Journal |volume = 744 |issue = 2 |page = 15 |bibcode = 2012ApJ...744..197G |doi = 10.1088/0004-637X/744/2/197 |access-date= 7 July 2017|arxiv = 1110.0283 }}
6. ^1 2 3 4 5 6 {{cite web |title = LCDB Data for (2483) Guinevere |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=2483%7CGuinevere |accessdate = 7 July 2017}}
7. ^1 2 3 4 {{cite journal |first1 = E. F. |last1 = Tedesco |first2 = P. V. |last2 = Noah |first3 = M. |last3 = Noah |first4 = S. D. |last4 = Price |date = October 2004 |title = IRAS Minor Planet Survey V6.0 |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2004PDSS...12.....T |journal = NASA Planetary Data System |pages = IRAS-A-FPA-3-RDR-IMPS-V6.0 |bibcode = 2004PDSS...12.....T |access-date= 7 July 2017}}
8. ^1 2 3 4 {{cite journal |display-authors = 6 |first1 = Fumihiko |last1 = Usui |first2 = Daisuke |last2 = Kuroda |first3 = Thomas G. |last3 = Müller |first4 = Sunao |last4 = Hasegawa |first5 = Masateru |last5 = Ishiguro |first6 = Takafumi |last6 = Ootsubo |first7 = Daisuke |last7 = Ishihara |first8 = Hirokazu |last8 = Kataza |first9 = Satoshi |last9 = Takita |first10 = Shinki |last10 = Oyabu |first11 = Munetaka |last11 = Ueno |first12 = Hideo |last12 = Matsuhara |first13 = Takashi |last13 = Onaka |date = October 2011 |title = Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey |url = http://pasj.oxfordjournals.org/content/63/5/1117.full.pdf+html |journal = Publications of the Astronomical Society of Japan |volume = 63 |issue = 5 |pages = 1117–1138 |bibcode = 2011PASJ...63.1117U |doi = 10.1093/pasj/63.5.1117 |access-date= 7 July 2017}}
9. ^1 2 {{Cite journal |display-authors = 6 |first1 = M. |last1 = Dahlgren |first2 = J. F. |last2 = Lahulla |first3 = C.-I. |last3 = Lagerkvist |first4 = J. |last4 = Lagerros |first5 = S. |last5 = Mottola |first6 = A. |last6 = Erikson |first7 = M. |last7 = Gonano-Beurer |first8 = M. |last8 = Di Martino |date = June 1998 |title = A Study of Hilda Asteroids. V. Lightcurves of 47 Hilda Asteroids |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1998Icar..133..247D |journal = Icarus |volume = 133 |issue = 2 |pages = 247–285 |bibcode = 1998Icar..133..247D |doi = 10.1006/icar.1998.5919 |access-date= 7 July 2017}}
10. ^1 2 {{cite journal |first1 = J. |last1 = Durech |first2 = J. |last2 = Hanus |first3 = D. |last3 = Oszkiewicz |first4 = R. |last4 = Vanco |date = March 2016 |title = Asteroid models from the Lowell photometric database |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016A&A...587A..48D |journal = Astronomy and Astrophysics |volume = 587 |page = 6 |bibcode = 2016A&A...587A..48D |doi = 10.1051/0004-6361/201527573 |arxiv = 1601.02909 |access-date= 7 July 2017}}
11. ^1 2 {{Cite journal |first1 = Brian D. |last1 = Warner |first2 = Robert D. |last2 = Stephens |first3 = Daniel R. |last3 = Coley |date = April 2017 |title = Lightcurve Analysis of Hilda Asteroids at the Center for Solar System Studies: 2016 September-December |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2017MPBu...44..130W |journal = The Minor Planet Bulletin |volume = 44 |issue = 2 |pages = 130–137 |issn = 1052-8091 |bibcode = 2017MPBu...44..130W |access-date= 7 July 2017}}
12. ^1 {{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= 7 July 2017}}
13. ^1 {{Cite journal |first1 = S. |last1 = Sonnett |first2 = A. |last2 = Mainzer |first3 = T. |last3 = Grav |first4 = J. |last4 = Masiero |first5 = J. |last5 = Bauer |date = February 2015 |title = Binary Candidates in the Jovian Trojan and Hilda Populations from NEOWISE Light Curves |journal = The Astrophysical Journal |volume = 799 |issue = 2 |page = 20 |bibcode = 2015ApJ...799..191S |doi = 10.1088/0004-637X/799/2/191 |arxiv = 1412.1853 }}
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}}

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 |2482 Perkin |number=2483 |2484 Parenago}}{{Small Solar System bodies}}{{DEFAULTSORT:Guinevere}}

5 : Hilda asteroids|Discoveries by Max Wolf|Named minor planets|Minor planets named from Arthurian legend|Astronomical objects discovered in 1928
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