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词条 4349 Tibúrcio
释义

  1. Orbit and classification

  2. Physical characteristics

      Rotation period    Diameter and albedo  

  3. Naming

  4. Notes

  5. References

  6. External links

{{Infobox planet
| minorplanet = yes
| name = 4349 Tibúrcio
| background = #D6D6D6
| image =
| image_size =
| caption =
| discovery_ref =  
| discovered = 5 June 1989
| discoverer = W. Landgraf
| discovery_site = La Silla Obs.
| mpc_name = (4349) Tiburcio
| alt_names = 1989 LX{{·}}1931 AE
{{mp|1951 YV|1}}{{·}}1959 SS
1968 WD{{·}}{{mp|1982 BJ|4}}
1984 MJ{{·}}{{mp|1986 AZ|2}}
| named_after = Júlio Tibúrcio
{{nowrap|{{small|(Brazilian amateur astronomer)}}[2]}}
| mp_category = main-belt{{·}}{{small|(middle)}} [3]
| orbit_ref =  
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 0
| observation_arc = 86.31 yr (31,526 days)
| aphelion = 3.2534 AU
| perihelion = 1.9884 AU
| semimajor = 2.6209 AU
| eccentricity = 0.2413
| period = 4.24 yr (1,550 days)
| mean_anomaly = 230.56°
| mean_motion = {{Deg2DMS|0.2323|sup=ms}} / day
| inclination = 10.740°
| asc_node = 90.259°
| arg_peri = 281.06°
| dimensions = {{val|24.91|0.28}} km[5]
26.12 km {{small|(derived)}}[3]
{{val|26.14|1.8}} km {{small|(IRAS:4)}}
{{val|26.397|0.117}}[8]
{{val|26.45|10.54}} km[9]
{{val|28.091|0.371}} km[10]
{{val|29.67|8.21}} km[11]
{{val|30.23|7.05}} km[12]
| rotation = {{val|16.284|0.003}} h{{efn|name=lcdb-Higgins}}
| albedo = {{val|0.0345|0.0053}}[10]
{{val|0.035|0.004}}[8]
{{val|0.040|0.041}}[9]
{{val|0.04|0.02}}[11]
{{val|0.04|0.01}}[12]
0.0493 {{small|(derived)}}[3]
{{val|0.0540|0.008}} {{small|(IRAS:4)}}
{{val|0.061|0.002}}[5]
| spectral_type = X [21]{{·}}S [3]
| abs_magnitude = 11.7[5][10][11]{{·}}11.8[3]{{·}}{{val|11.94|0.44}}[21]{{·}}12.00[9]{{·}}12.11[12]
}}4349 Tibúrcio, provisional designation {{mp|1989 LX}}, is a dark asteroid from the central region of the asteroid belt, approximately 29 kilometers in diameter. It was discovered on 5 June 1989, by German astronomer Werner Landgraf at ESO's La Silla Observatory in northern Chile.[31]

With 53.5°, it had been the asteroid with the smallest angular distance from the Sun ever discovered.[32]{{rp|395}} It was later named after Brazilian amateur astronomer Júlio Tibúrcio.[2]

Orbit and classification

Tibúrcio orbits the Sun in the central main-belt at a distance of 2.0–3.3 AU once every 4 years and 3 months (1,550 days). Its orbit has an eccentricity of 0.24 and an inclination of 11° with respect to the ecliptic.

One day before its first identification as {{mp|1931 AE}}, a precovery was taken at Lowell Observatory in 1931, extending the body's observation arc by 58 years prior to its official discovery at La Silla.[31]

Physical characteristics

The asteroid has been characterized as a X-type asteroid by Pan-STARRS{{'}} large-scale photometric survey.[21]

Rotation period

A rotational lightcurve of Tibúrcio was obtained from photometric observations by astronomer David Higgins at the Australian Hunters Hill Observatory ({{small|E14}}) in October 2010. Lightcurve analysis gave a well-defined rotation period of 16.284 hours with a brightness variation of 0.40 magnitude ({{small|U=3}}).{{efn|name=lcdb-Higgins}}

Diameter and albedo

According to the space-based surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its NEOWISE mission, Tibúrcio measures between 24.9 and 30.23 kilometers in diameter, and its surface has a low albedo between 0.034 and 0.061.[5][8][9][10][11][12]

Collaborative Asteroid Lightcurve Link assumes an albedo of 0.049 and calculates a diameter of 26.1 kilometers with an absolute magnitude of 11.8.[3]

Naming

This minor planet was named after Brazilian amateur astronomer and student of information science, Júlio César dos Santos Tibúrcio.[2] The official naming citation was published by the Minor Planet Center on 8 June 1990 ({{small|M.P.C. 16445}}).[46]

Notes

{{notelist|refs={{efn|name=lcdb-Higgins|1=Higgins (2011) web: rotation period {{val|16.284|0.003}} hours with a brightness amplitude of {{val|0.40}} mag. Quality Code (U) of 3 (Denotes a secure result within the precision given and no ambiguity.). Summary figures for (4349) Tiburcio at Collaborative Asteroid Lightcurve Link (CALL)}}

}}

References

1. ^1 2 3 {{cite book |title = Dictionary of Minor Planet Names – (4349) Tibúrcio |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 373 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_4301 |chapter = (4349) Tibúrcio }}
2. ^1 2 {{cite web |title = 4349 Tiburcio (1989 LX) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=4349 |accessdate = 3 August 2016}}
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 = 3 August 2016}}
4. ^1 {{cite journal |author = Marsden, B. G. |date = December 1993 |title = Asteroid and Comet Surveys |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1994IAUS..161..385M |journal = Astronomy from Wide-field Imaging: Proceedings of the 161st Symposium of the International Astronomical Union |volume = 161 |page = 385 |bibcode = 1994IAUS..161..385M |access-date= 3 January 2016}}
5. ^1 2 3 4 5 6 {{cite web |title = LCDB Data for (4349) Tiburcio |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=4349%7CTiburcio |accessdate = 3 August 2016}}
6. ^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://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011PASJ...63.1117U |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= 3 August 2016}}
7. ^1 2 3 4 {{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= 3 August 2016}}
8. ^1 2 3 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 = 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= 3 August 2016}}
9. ^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= 3 August 2016}}
10. ^1 2 3 {{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= 5 December 2016}}
11. ^1 2 3 4 {{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 = 20 June 2017}}
12. ^1 2 3 4 {{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 = 20 June 2017}}
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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|4348 Poulydamas|number=4349|4350 Shibecha}}{{Small Solar System bodies}}{{DEFAULTSORT:Tiburcio}}

5 : Background asteroids|Discoveries by Werner Landgraf|Minor planets named for people|Named minor planets|Astronomical objects discovered in 1989
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