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{{DEFAULTSORT:List Of Extrasolar Planet Extremes}}
{{DEFAULTSORT:List Of Extrasolar Planet Extremes}}
[[Category:Lists of stars]]
[[Category:Extrasolar planets| Extremes]]
[[Category:Extrasolar planets| ]]
[[Category:Lists of planets|Extrasolar extremes]]
[[Category:Planetary systems|*]]
[[Category:Planetary systems|*Planetary Extremes]]
[[Category:Lists of planets]]
[[Category:Lists of stars|Extrasolar planet extremes]]
[[Category:World records|Extrasolar planet extremes]]


[[ko:극단적인 외계 행성 목록]]
[[ko:극단적인 외계 행성 목록]]

Revision as of 06:47, 22 October 2010

The following are lists of extremes among the known extrasolar planets. The properties listed here are those for which values are reliably known.

Extremes

Title Planet Star Data Notes
Most distant OGLE-2005-BLG-390Lb [1] OGLE-2005-BLG-390L [1] 21,500 ± 3,300 light years
  1. An analysis of the lightcurve of the microlensing event PA-99-N2 suggests the presence of a planet orbiting a star in the Andromeda Galaxy.[2]
  2. A controversial microlensing event of lobe A of the double gravitationally lensed Q0957+561 suggests that there is a planet in the lensing galaxy lying at redshift 0.355 (3.7 Gly).[3][4]
Least distant Epsilon Eridani b [5] Epsilon Eridani [5] 10.4 light years [5] Claims have been made by Gatewood that Lalande 21185, (the fourth nearest star system to our Sun at 8.3 light-years distance) may have an exoplanet or two. These claims have not been confirmed.

Planetary characteristics

Title Planet Star Data Notes
Least massive PSR B1257+12 A [6][7] PSR B1257+12 [6][7] 0.02 MEarth [6][7]
  1. the mass of PSR B1257+12 A is based on an assumption of coplanarity with the outer two planets.
  2. PSR B1257+12 system may include possible asteroidal object, but it is possibly not massive enough to qualify as a planet.
  3. The low mass cut-off for an exoplanet is currently undefined.
Biggest radius TrES-4 GSC 02620-00648 1.674 Jupiter radii [citation needed] The recently discovered WASP-17b may be larger and less dense.[8]
Smallest radius COROT-7b [9][10] TYC 4799-1733-1 [9] 1.7 Earth radii [9][10]
Least dense TrES-4 GSC 02620-00648 Density is 240 kg/m3 The recently discovered WASP-17b may be larger and less dense.[8][11]

Orbit characteristics

Title Star Planets Data Notes
Shortest orbital period
(Shortest year) 		55 Cancri e [12] 55 Cancri [12] 0.736537 days ± 0.000013 (17.6769 hours) [12][13] SWEEPS-10 (awaiting confirmation) has an orbital period of 0.424 days (10.2 hours).[12]
Most eccentric orbit HD 80606 b [14] HD 80606 [14] eccentricity of 0.9349 [15]
Least eccentric orbit HD 209458 b HD 209458 eccentricity of 0.001
Most inclined orbit (relative to sky plane) HAT-P-2b HD 147506 inclination 90°[dubious – discuss]
Smallest orbit GJ 1214 b GJ 1214 0.014 AU SWEEPS-10 (awaiting confirmation) has an orbital distance of 0.008 AU (1.2 million km).

Stellar characteristics

Title Star Planets Data Notes
Highest metallicity HD 126614 A HD 126614 Ab +0.56 dex

System characteristics

Title System Planet(s) Star(s) Data Notes
System with most planets HD 10180 7 1

References

  1. ^ a b USA Today, "Smallest, most distant planet outside solar system found", Malcolm Ritter, 25 January 2006 (accessed 5 August 2010)
  2. ^ Schneider, J. "Notes for star PA-99-N2". The Extrasolar Planets Encyclopaedia. Retrieved 2010-08-06.
  3. ^ Exoplaneten.de, "The Microlensing Event of Q0957+561" (accessed 5 August 2010)
  4. ^ Astrophysical Journal, "Microlensing Variability of the Gravitationally Lensed Quasar Q0957+561 A,B", R.E. Schild, June 1996, v.464, p.125, doi:10.1086/177304 , Bibcode:1996ApJ...464..125S
  5. ^ a b c Space.com, "Nearest Planet Beyond Solar System Might Be Photogenic", Ker Than, 9 October 2006 (accessed 5 August 2010)
  6. ^ a b c New Scientist, "Smallest known exoplanet may actually be Earth-mass", Stephen Battersby, 19 January 2009 (accessed 5 August 2010)
  7. ^ a b c "Planets Around Pulsars", Alex Wolszczan (accessed 5 August 2010)
  8. ^ a b National Post, "Astronomers discover new planet WASP-17b almost twice Jupiter's size", Shane Dingman, 14 August 2009 (accessed 5 August 2010)
  9. ^ a b c Sky and Telescope, "COROT Finds the Smallest Exoplanet Yet", Govert Schilling, 3 February 2009 (accessed 5 August 2010)
  10. ^ a b ESA, "COROT discovers smallest exoplanet yet, with a surface to walk on", 3 February 2009 (accessed 5 August 2010)
  11. ^ Astrophysical Journal, "WASP-17b: an ultra-low density planet in a probable retrograde orbit", Anderson, D. R. et al., 1 January 2010, vol.709, pp.159-167, ISSN 0004-637X , doi:10.1088/0004-637X/709/1/159 , Bibcode:2010ApJ...709..159A , arXiv:0908.1553v2
  12. ^ a b c d New Scientist, "How short can a planet's year be?", Ken Croswell, 28 May 2010 (accessed 5 August 2010)
  13. ^ "Radial velocity planets de-aliased. A new, short period for Super-Earth 55 Cnc e", Rebekah I. Dawson, Daniel C. Fabrycky, 21 May 2010, arXiv:1005.4050v2 , Bibcode:2010arXiv1005.4050D
  14. ^ a b ScienceDaily, "Students Find Jupiter-Sized Oddball Planet", 22 April 2009 (accessed 5 August 2010)
  15. ^ "Detection of a transit by the planetary companion of HD 80606", Stephen J. Fossey, Ingo P. Waldmann, David M. Kipping, 26 February 2009, Mon. Not. R. Astron. Soc., 2009, Volume 396, L16-20, doi:10.1111/j.1745-3933.2009.00653.x , Bibcode:2009MNRAS.396L..16F , arXiv:0902.4616v2

External links

See also

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