请输入您要查询的百科知识:

 

词条 19982 Barbaradoore
释义

  1. Orbit and classification

      Recent Mars-crosser and disparate criteria  

  2. Physical characteristics

      Lightcurve    Diameter and albedo    Comparison  

  3. Naming

  4. Notes

  5. References

  6. External links

{{Infobox planet
| minorplanet = yes
| name = 19982 Barbaradoore
| background = #FA8072
| image =
| image_size =
| caption =
| discovery_ref =  
| discovered = 22 January 1990
| discoverer = E. F. Helin
| discovery_site = Palomar Obs.
| mpc_name = (19982) Barbaradoore
| alt_names = {{nowrap|1990 BJ{{·}}{{mp|1983 AD|2}}}}
| named_after = Barbara Doore
{{small|(discoverer's cousin)}}[2]
| mp_category = Mars crosser [4]
{{nowrap|main-belt [5]{{·}}Phocaea [6]}}
| orbit_ref =  
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 0
| observation_arc = 33.36 yr (12,186 days)
| aphelion = 3.0039 AU
| perihelion = 1.6657 AU
| semimajor = 2.3348 AU
| eccentricity = 0.2866
| period = 3.57 yr (1,303 days)
| mean_anomaly = 307.09°
| mean_motion = {{Deg2DMS|0.2763|sup=ms}} / day
| inclination = 22.325°
| asc_node = 290.03°
| arg_peri = 106.86°
| dimensions = {{val|3.88|0.63}} km[8]
{{val|4.668|0.120}} km[9][10]
{{val|5.02|0.14}} km[11]
5.66 km {{small|(calculated)}}[4]
| rotation = {{val|3.3162|0.0003}} h{{efn|name=lcdb-Pravec}}
| albedo = 0.20 {{small|(assumed)}}[4]
{{val|0.306|0.040}}[11][10]
{{val|0.3540|0.0784}}[9]
{{val|0.42|0.21}}[8]
| spectral_type = S {{small|(assumed)}}[4]
| abs_magnitude = {{val|13.13|0.47}}[19]{{·}}13.4[9][11]
13.5[8]{{·}}13.6[4]
}}19982 Barbaradoore, provisional designation {{mp|1990 BJ}}, is an eccentric, stony Phocaea asteroid and a recent Mars-crosser from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 22 January 1990, by American astronomer Eleanor Helin at the Palomar Observatory in California, United States.[5] The asteroid was named after Barbara Doore, a cousin of the discoverer.[2]

Orbit and classification

When applying the Hierarchical Clustering Method to its proper orbital elements, Barbaradoore is a member of the Phocaea family ({{small|701}}),[6] a large family of stony S-type asteroids with nearly two thousand known members.[28]{{rp|23}} It orbits the Sun in the inner main-belt at a distance of 1.7–3.0 AU once every 3 years and 7 months (1,303 days). Its orbit has an eccentricity of 0.29 and an inclination of 22° with respect to the ecliptic.

Recent Mars-crosser and disparate criteria

As of 2017, Barbaradoore has become a Mars-crossing asteroid (MCA), a dynamically unstable group between the main belt and the near-Earth populations, because its perihelion is at 1.6657, declining from 1.6662 AU just the year before. In the JPL Small-Body Database, an asteroid's perihelion has to be smaller than 1.666 AU in order to classify as MCA, while in the Lightcurve Data Base, that limit is defined at 1.668 AU.[30]{{efn|name=JPL-Mars-crosser}}

As of 2017, the Minor Planet Center does not classify Barbaradoore as an MCA, due to a differently defined threshold-perihelion of 1.6600 AU.[31] It therefore remains an unspecified main-belt asteroid.[5] Before 2017, when Barbaradoore{{'}}s orbit did not yet cross that of Mars, it was an outer Mars grazer.

Physical characteristics

Barbaradoore is an assumed stony S-type asteroid,[4] which agrees with the overall spectral type for members of the Phocaea family.[28]{{rp|23}}

Lightcurve

In July 2010, a rotational lightcurve of Barbaradoore was obtained from photometric observation by Czech astronomer Petr Pravec at Ondřejov Observatory. Lightcurve analysis gave a well-defined rotation period of {{val|3.3162}} hours with a brightness variation of 0.28 magnitude ({{small|U=3}}).{{efn|name=lcdb-Pravec}}

Diameter and albedo

According to the surveys carried out by NASA's Wide-field Infrared Survey Explorer and its subsequent NEOWISE mission, Barbaradoore has a high albedo between 0.306 and 0.42 with a corresponding diameter of 3.88 to 5.02 kilometers,[8][9][11] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 5.66 kilometers with an absolute magnitude of 13.6.[4]

Comparison

With a diameter of approximately 5 kilometers, Barbaradoore is one of the smallest sizable Mars-crossing asteroids compared to 1065 Amundsenia (9.75 km), 1139 Atami (9.35 km), 1508 Kemi (17 km), 1011 Laodamia (7.39 km), 1727 Mette (est 9 km), 1131 Porzia (7.13 km), 1235 Schorria (est. 9 km), 985 Rosina (8.18 km) 1310 Villigera (15.24 km), and 1468 Zomba (7 km); and much smaller than the largest members of this dynamical group, namely, 132 Aethra, 323 Brucia, 2204 Lyyli and 512 Taurinensis, which are larger than 20 kilometers in diameter.

Naming

This minor planet was named after a cousin of the discoverer, Barbara Hendricks Doore (born 1933). She is described by the discoverer as an admirer of sports and as an appreciated leader and volunteer, who has dedicated much of her time at Cathedral City's Boys and Girls Club in California.[2] The official naming citation was published by the Minor Planet Center on 24 June 2002 {{small|(M.P.C. 46012)}}.[40]

Notes

{{notelist|refs={{efn|name=lcdb-Pravec|1=Pravec (2010): lightcurve plot of (19982) Barbaradoore with a rotation period of {{val|3.3162|0.0003}} hours and a brightness amplitude of {{val|0.28}} mag. CALL assigns a quality-code of Q=3, which denotes a "secure result within the precision given and no ambiguity". Summary figures at Collaborative Asteroid Lightcurve Link (CALL) and Ondrejov Asteroid Photometry Project – Pravec, P.; Wolf, M.; Sarounova, L. (2010)}}{{efn|name=JPL-Mars-crosser|1=The JPL Small-Body Database uses the following orbital criteria to define a Mars-crossing asteroid: A perihelion that is between 1.3 and 1.666 AU with a semi-major axis that is not greater than 3.2 AU, see [https://ssd.jpl.nasa.gov/sbdb_help.cgi?class=MCA JPL's Orbit Classification]}}

}}

References

1. ^{{cite book |title = Dictionary of Minor Planet Names – (19982) Barbaradoore |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 860 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_9595 |chapter = (19982) Barbaradoore }}
2. ^{{cite web |title = 19982 Barbaradoore (1990 BJ) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=19982 |accessdate = 26 April 2016}}
3. ^{{cite web |title = MPC/MPO/MPS Archive |work = Minor Planet Center |url = http://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html |accessdate = 26 April 2016}}
4. ^{{cite web |title = 13000 objects with orbit type Mars-crosser |work = Minor Planet Center |url = http://minorplanetcenter.net/db_search/show_by_orbit_type?utf8=%E2%9C%93&orbit_type=5 |accessdate = 27 June 2017}}
5. ^{{cite web |title = Small Bodies Data Ferret |work = Nesvorny HCM Asteroid Families V3.0 |url = https://sbntools.psi.edu/ferret/PropertySearch/familyForm.action |accessdate = 1 November 2017}}
6. ^{{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 }}
7. ^{{cite web |title = LCDB Data for (19982) Barbaradoore |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=19982%7CBarbaradoore |accessdate = 26 April 2016}}
8. ^{{cite web |title = LCDB readme – 2. Taxonomic Class, orbital class, and albedo |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/datazips/LCDB_readme.txt |accessdate = 20 January 2016}}
9. ^{{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 |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...90M |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 |access-date= 20 January 2016}}
10. ^{{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 = C. |last6 = Nugent |first7 = M. S. |last7 = Cabrera |date = November 2012 |title = Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M |journal = The Astrophysical Journal Letters |volume = 759 |issue = 1 |page = 5 |bibcode = 2012ApJ...759L...8M |doi = 10.1088/2041-8205/759/1/L8 |arxiv = 1209.5794 |access-date= 20 January 2016}}
11. ^{{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= 26 April 2016}}
12. ^{{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= 3 December 2016}}
13. ^{{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 |accessdate = 27 June 2017}}
[1][2][3][4][5][6][7][8][9][10][11][12][13]

}}

External links

  • Pravec, P.; Wolf, M.; Sarounova, L. (2010)
  • 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 (15001)-(20000) – Minor Planet Center
  • {{JPL small body}}
{{Minor planets navigator |19981 Bialystock |number=19982 | }}{{Small Solar System bodies}}{{DEFAULTSORT:Barbaradoore}}

6 : Mars-crossing asteroids|Phocaea asteroids|Discoveries by Eleanor F. Helin|Minor planets named for people|Named minor planets|Astronomical objects discovered in 1990

随便看

 

开放百科全书收录14589846条英语、德语、日语等多语种百科知识,基本涵盖了大多数领域的百科知识,是一部内容自由、开放的电子版国际百科全书。

 

Copyright © 2023 OENC.NET All Rights Reserved
京ICP备2021023879号 更新时间:2024/11/14 2:11:16