Plùtò

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Pluto  Astronomical symbol of Pluto
Pluto animiert.gif
Computer-generated map of Pluto from Hubble images, synthesised true colour[note 1] and among the highest resolutions possible with current technology
Ìkọ́kọ́wárí
Kíkọ́kọ́wárí látọwọ́ Clyde W. Tombaugh
Ọjọ́ ìkọ́kọ́wárí February 18, 1930
Ìfúnlọ́rúkọ
Orúkọ MPC 134340 Pluto
Ìpolongo Gbígbọ́i /ˈplt/,[note 2]
Sísọlọ́rúkọ fún Pluto
Minor planet
category
dwarf planet,
TNO,
plutoid,
KBO,
plutino
Alápèjúwe Plutonian
Àsìkò J2000
Aphelion 7,375,927,931 km
49.305 032 87 AU
Perihelion 4,436,824,613 km
29.658 340 67 AU
(1989-Sep-05)[1]
Semi-major axis 5,906,376,272 km
39.481 686 77 AU
Eccentricity 0.248 807 66
Àsìkò ìgbàyípo 90,613.305 days
248.09 years
14,164.4 Pluto solar days[2]
Synodic period 366.73 days
Average orbital speed 4.666 km/s
Mean anomaly 14.86012204°[3]
Inclination 17.141 75°
11.88° to Sun's equator
Longitude of ascending node 110.303 47°
Argument of perihelion 113.763 29°
Satellites 3
Àwọn ìhùwà àdánidá
Iyeìdáméjì ìfẹ̀kiri 1,153 ± 10 km[4]
(0.18 Earths)
1161 km[5](solid)
Ààlà ojúde 1.665 × 107 km2[note 3]
0.033 Earths
Ìpọ̀sí 6.39 × 109 km3[note 4]
0.0059  Earths
Àkójọ (1.305 ± 0.007) × 1022 kg[4]
0.002 1 Earths
0.178 moon
Iyeìdáméjì ìṣùpọ̀ 2.03 ± 0.06 g/cm3[4]
Equatorial surface gravity Àdàkọ:Gr m/s2[note 5]
0.067 g
Escape velocity Àdàkọ:V2 km/s[note 6]
Sidereal rotation
period
−6.387 230 day
6 d 9 h 17 m 36 s
Equatorial rotation velocity 47.18 km/h
Axial tilt 119.591 ± 0.014° (to orbit)[4][note 7]
North pole right ascension 133.046 ± 0.014°[4]
North pole declination −6.145 ± 0.014°[4]
Albedo 0.49–0.66 (geometric, varies by 35%)[6][7]
Ìgbónásí ojúde
   Kelvin
min mean max
33 K 44 K 55 K
Apparent magnitude 13.65[7] to 16.3[8]
(mean is 15.1)[7]
Absolute magnitude (H) −0.7[9]
Angular diameter 0.065" to 0.115"[7][note 8]
Afẹ́fẹ́àyíká
Ìfúnpá ojúde 0.30 Pa (summer maximum)
Ìkósínú nitrogen, methane

Pluto, oruko 134340 Pluto, ni planeti arara to ni akojojulo keji ninu Sistemu Orun (leyin Eris) ati isupo agbarajo kewa to je sisakiyesi pe ohun lo lojuonaiyipo taara Òrùn.


Akiyesi[àtúnṣe | àtúnṣe àmìọ̀rọ̀]

  1. The HST observations were made in two wavelengths, which is insufficient to directly make a true colour image. However, the surface maps at each wavelength do limit the shape of the spectrum that could be produced by the materials that are potentially on Pluto's surface. These spectra, generated for each resolved point on the surface, are then converted to the RGB colour values seen here. See Buie et al, 2010.
  2. In US dictionary transcription, Àdàkọ:USdict. From the Látìnì: Plūto
  3. Surface area derived from the radius r: 4\pi r^2.
  4. Volume v derived from the radius r: 4\pi r^3/3.
  5. Surface gravity derived from the mass m, the gravitational constant G and the radius r: Gm/r^2.
  6. Escape velocity derived from the mass m, the gravitational constant G and the radius r: Àdàkọ:Math.
  7. Based on the orientation of Charon's orbit, which is assumed the same as Pluto's spin axis due to the mutual tidal locking.
  8. Based on geometry of minimum and maximum distance from Earth and Pluto radius in the factsheet

Itokasi[àtúnṣe | àtúnṣe àmìọ̀rọ̀]

  1. "Horizon Online Ephemeris System for Pluto Barycenter". JPL Horizons On-Line Ephemeris System @ Solar System Dynamics Group. http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=mb&sstr=9. Retrieved 2011-01-16.  (set Observer Location to @sun to place the observer at the center of the sun)
  2. Seligman, Courtney. "Rotation Period and Day Length". http://cseligman.com/text/sky/rotationvsday.htm. Retrieved 2009-08-13. 
  3. Williams, J G. "Keplerian Elements for Approximate Positions of the Major Planets". http://iau-comm4.jpl.nasa.gov/keplerformulae/kepform.pdf. Retrieved 2011-01-12. 
  4. 4.0 4.1 4.2 4.3 4.4 4.5 M. W. Buie, W. M. Grundy, E. F. Young, L. A. Young, S. A. Stern (2006). "Orbits and photometry of Pluto's satellites: Charon, S/2005 P1, and S/2005 P2". Astronomical Journal 132: 290. doi:10.1086/504422. Àdàkọ:Arxiv. http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2006AJ....132..290B&db_key=AST&data_type=HTML&format=&high=444b66a47d27727. 
  5. Pluto's Radius - Young, Eliot F.; Young, L. A.; Buie, M. (American Astronomical Society, DPS meeting #39, #62.05; Bulletin of the American Astronomical Society, Vol. 39, p.541)
  6. Calvin J. Hamilton (2006-02-12). "Dwarf Planet Pluto". Views of the Solar System. http://www.solarviews.com/eng/pluto.htm. Retrieved 2007-01-10. 
  7. Cite error: Invalid <ref> tag; no text was provided for refs named Pluto_Fact_Sheet
  8. "AstDys (134340) Pluto Ephemerides". Department of Mathematics, University of Pisa, Italy. http://hamilton.dm.unipi.it/astdys/index.php?pc=1.1.3.1&n=134340&oc=500&y0=1870&m0=2&d0=9&h0=0&mi0=0&y1=1870&m1=3&d1=20&h1=0&mi1=0&ti=1.0&tiu=days. Retrieved 2010-06-27. 
  9. "JPL Small-Body Database Browser: 134340 Pluto". http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=Pluto. Retrieved 2008-06-12.