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词条 1032 Pafuri
释义

  1. Orbit and classification

  2. Physical characteristics

      Rotation period    Diameter and albedo  

  3. Naming

  4. References

  5. External links

{{Infobox planet
| minorplanet = yes
| name = 1032 Pafuri
| background = #D6D6D6
| image =
| image_size =
| caption =
| discovery_ref =  [1]
| discoverer = H. E. Wood
| discovery_site = Johannesburg Obs.
| discovered = 30 May 1924
| mpc_name = (1032) Pafuri
| alt_names = 1924 SA{{·}}1937 XB
1947 SA{{·}}1961 AQ
1965 YJ{{·}}A917 CC
| pronounced =
| named_after = Pafuri Triangle/River [2]
{{small|(in South Africa)}}
| mp_category = {{nowrap|main-belt [1]{{·}}{{small|(outer)}} [5]}}
background [6]
| orbit_ref =  
| epoch = 23 March 2018 (JD 2458200.5)
| uncertainty = 0
| observation_arc = 100.95 yr (36,873 d)
| aphelion = 3.5799 AU
| perihelion = 2.6806 AU
| semimajor = 3.1303 AU
| eccentricity = 0.1436
| period = 5.54 yr (2,023 d)
| mean_anomaly = 317.36°
| mean_motion = {{Deg2DMS|0.1780|sup=ms}} / day
| inclination = 9.4808°
| asc_node = 76.322°
| arg_peri = 189.23°
| mean_diameter = {{val|54.61|ul=km}} {{small|(derived)}}[5]
{{val|54.67|3.4|u=km}}[9]
{{val|62.60|0.81|u=km}}[10]
{{val|65.658|0.280|u=km}}[11]
{{val|68.74|24.54|u=km}}[12]
{{val|70.27|18.94|u=km}}[13]
{{val|75.265|0.792|u=km}}[14]
| rotation = {{val|13|ul=h}} {{small|(at least)}}[15]
{{val|24|u=h}} {{small|(at least)}}[16]
| albedo = {{val|0.0312|0.0055}}[14]
{{val|0.04|0.01}}[13]
{{val|0.04|0.06}}[12]
{{val|0.042|0.009}}[11]
{{val|0.046|0.001}}[10]
0.0540 {{small|(derived)}}[5]
{{val|0.0591|0.008}}[9]
| spectral_type = SMASS {{=}} X {{·}}P [14]
C {{small|(assumed)}}[5]
| abs_magnitude = 10.00[9][10][14]
10.10[5][13]{{·}}10.17[12]
{{val|10.41|0.53}}[34]
}}

1032 Pafuri, provisional designation {{mp|1924 SA}}, is a dark background asteroid from the outer regions of the asteroid belt, approximately {{convert|65|km|mi|abbr=off|sigfig=1|sp=us}} in diameter. It was discovered on 30 May 1924, by English astronomer Harry Edwin Wood at the Union Observatory in Johannesburg, South Africa.[1] The asteroid was named for the river in the Pafuri Triangle in South Africa, created by the confluence of the Limpopo and Levubu rivers.[2] The body's spectral type and rotation period are still poorly determined.

Orbit and classification

Pafuri is a non-family asteroid from the main belt's background population.[6] It orbits the Sun in the outer main-belt at a distance of 2.7–3.6 AU once every 5 years and 6 months (2,023 days; semi-major axis of 3.13 AU). Its orbit has an eccentricity of 0.14 and an inclination of 9° with respect to the ecliptic.

The asteroid was first observed as {{mp|A917 CC}} at Heidelberg Observatory in February 1917, where the body's observation arc begins in April 1929, nearly 5 years after its official discovery observation at Johannesburg.[1]

Physical characteristics

In the SMASS classification, Pafuri is an X-type asteroid, while the Wide-field Infrared Survey Explorer (WISE) characterized it as a primitive and darker P-type asteroid.[14] The Collaborative Asteroid Lightcurve Link assumes it to be a carbonaceous C-type asteroid.[5]

Rotation period

In November 2009, a rotational lightcurve of Pafuri was obtained from photometric observations by French amateur astronomer Pierre Antonini who suspects it to be a slow rotator.[16] Lightcurve analysis gave a rotation period of at least 24 hours with a brightness variation of more than 0.15 magnitude ({{small|U=n.a.}}).[16] The result supersedes a previous period of at least 13 hours at the Oakley Observatory in the United States ({{small|U=n.a.}}).[15] As of 2018, no secure rotation period has been obtained.[5]

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 telescope, Pafuri measures between 54.67 and 75.265 kilometers in diameter and its surface has an albedo between 0.0312 and 0.0591.[9][10][11][12][13][14]

CALL derives an albedo of 0.0540 and a diameter of 54.61 kilometers based on an absolute magnitude of 10.1.[5]

Naming

This minor planet was named after the river in the Pafuri Triangle, created by the confluence of the Limpopo and Levubu rivers in South Africa.[2] The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ({{small|H 98}}).[2]

References

1. ^{{cite book |title = Dictionary of Minor Planet Names – (1032) Pafuri |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 89 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_1033 |chapter = (1032) Pafuri }}
2. ^{{cite web |title = 1032 Pafuri (1924 SA) |work = Minor Planet Center |url = https://www.minorplanetcenter.net/db_search/show_object?object_id=1032 |accessdate = 19 March 2018}}
3. ^{{cite web |title = Asteroids and comets rotation curves – (1032) Pafuri |last = Behrend |first = Raoul |publisher = Geneva Observatory |url = http://obswww.unige.ch/~behrend/page3cou.html#001032 |accessdate = 19 March 2018}}
4. ^{{cite journal |display-authors = 6 |first1 = Joseph R. |last1 = Masiero |first2 = T. |last2 = Grav |first3 = A. K. |last3 = Mainzer |first4 = C. R. |last4 = Nugent |first5 = J. M. |last5 = Bauer |first6 = R. |last6 = Stevenson |first7 = S. |last7 = Sonnett |date = August 2014 |title = Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos |journal = The Astrophysical Journal |volume = 791 |issue = 2 |page = 11 |bibcode = 2014ApJ...791..121M |doi = 10.1088/0004-637X/791/2/121 |arxiv = 1406.6645 }}
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 = 19 March 2018}}
6. ^{{cite web |title = LCDB Data for (1032) Pafuri |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=1032%7CPafuri |accessdate = 19 March 2018}}
7. ^{{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 }}
8. ^{{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= 19 March 2018}} Online catalog
9. ^{{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 = https://sbn.psi.edu/pds/asteroid/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab |journal = NASA Planetary Data System |pages = IRAS-A-FPA-3-RDR-IMPS-V6.0 |bibcode = 2004PDSS...12.....T |access-date = 19 March 2018 |archive-url = https://web.archive.org/web/20160603231123/http://sbn.psi.edu/pds/asteroid/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab |archive-date = 3 June 2016 |dead-url = yes |df = dmy-all }}
10. ^{{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 |access-date= 19 March 2018}}
11. ^{{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 |access-date= 19 March 2018}}
12. ^{{Cite journal |first1 = Scot |last1 = Hawkins |first2 = Richard |last2 = Ditteon |date = March 2008 |title = Asteroid Lightcurve Analysis at the Oakley Observatory - May 2007 |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008MPBu...35....1H |journal = The Minor Planet Bulletin |volume = 35 |issue = 1 |pages = 1–4 |issn = 1052-8091 |bibcode = 2008MPBu...35....1H |access-date= 19 March 2018}}
13. ^{{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= 19 March 2018}}
[1][2][3][4][5][6][7][8][9][10][11][12][13]

}}

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
  • {{AstDys|1032}}
  • {{JPL small body}}
{{Use dmy dates|date=March 2018}}{{Minor planets navigator |1031 Arctica |number=1032 |1033 Simona}}{{Small Solar System bodies}}{{DEFAULTSORT:Pafuri}}

6 : Background asteroids|Discoveries by Harry Edwin Wood|Minor planets named for rivers|Named minor planets|X-type asteroids (SMASS)|Astronomical objects discovered in 1924

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