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The following are lists of extremes among the known
extrasolar planets. The properties listed here are those for which values are known reliably.
Extremes from Earth's viewpoint [ edit ]
OGLE-2005-BLG-390Lb [1 ]
OGLE-2005-BLG-390L [1 ]
21,500 ± 3,300 light years
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 ]
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 ]
Alpha Centauri Bb [5 ]
Alpha Centauri B [5 ] 4.37 light years
With a mass of about 1.1 times the size of Earth, it is very similar in size to Earth.
Star with the brightest apparent magnitude with a planet
Pollux [6 ] Apparent magnitude is 1.14
The evidence of planets around
Vega with an apparent magnitude of 0.03 is strongly suggested by circumstellar disks surrounding it. Currently no planets have been confirmed yet. [7 ]
Largest angular distance separation from its host star
Fomalhaut 14.92731 arc seconds
[8 ] WD 0806-661 b has an angular separation of 130.208333 arc seconds from
WD 0806-661. However, its planetary origin is unknown.
Planetary characteristics [ edit ]
Orbit characteristics [ edit ]
Fomalhaut b [13 ]
Fomalhaut [13 ]
320,000 days (876 years) [13 ]
DT Virginis c has an orbital period of 33,081 years. It is below brown dwarf mass limit but its origin is currently unknown. [14 ]
Shortest orbital period
Kepler-70 [16 ]
0.2407 ± 0.000004 days (5.7768 hours) Star is a
post-red-giant with another close-period planet, KOI-55.02 [17 ]
HD 80606 b [18 ]
HD 80606 [18 ] eccentricity of 0.9349
[19 ] HD 20782 b has an orbital eccentricity of 0.92 to 0.97
Least eccentric orbit
HD 209458 b
HD 209458 eccentricity of 0.001
Most inclined orbit
(relative to sky plane)
HD 147506 inclination 90°
Largest orbit around a single star
[20 ] [21 ]
HD 106906 b [20 ]
HD 106906 [20 ] ~650 AU
Kepler-70 0.006 AU
Smallest orbit around binary star
Kepler-47AB ≃0.3 AU
Smallest ratio of semi-major axis of a planet orbit to binary star orbit
Kepler-16AB 3.14 ± 0.01
Ratio of planet orbit to binary star orbit (by
semi-major axis) [23 ]
Largest orbit around binary star
DT Virginis c
DT Virginis 1168 AU
Star system is also known as Ross 458 AB. The planet was eventually confirmed to be below deuterium burning limit but its formation origin is unknown.
Largest orbit around a single star in a multiple star system
Fomalhaut 115 AU
The second stellar component of the system,
TW Piscis Austrini, has a semi-major axis of 57,000 AU from Fomalhaut and the third stellar component, LP 876-10 orbits 158,000 AU away from Fomalhaut.
Largest orbit between binary stars with a circumbinary planet
FW Tauri AB b
FW Tau AB ≈11 AU
Closest orbit between stars with a planet orbiting one of the stars
Alpha Centauri Bb
Alpha Centauri A and Alpha Centauri B. 17.57 AU
Alpha Centauri Bb orbits 0.04 AU away from Alpha Centauri B. Two stars have an eccentric orbit with distance between them ranging from 11.2 to 35.6 AU.
Closest approach between planets orbiting a star
Kepler-70b and Kepler-70c [24 ]
Kepler-70 0.0016 AU
This is equivalent to about 240000 km. During closest approach, Kepler-70c would appear 5 times the size of the Moon in Kepler-70b's sky.
Smallest semi-major axis ratio difference between planets
Kepler-36b and Kepler-36c
Kepler-36 0.0130 AU (outer planet is 11% further than the inner one)
Kepler-36b and c have semi-major axes of 0.1153 AU and 0.1283 AU respectively.
Stellar characteristics [ edit ]
System characteristics [ edit ]
System with most (confirmed) planets
HD 10180 7
The planets are HD 10180b, c, ..., h. This system has 2 unconfirmed planets and more data is needed to confirm their existence.
[27 ] [27 ]
System with most stars
PH1's official name is Kepler 64b. PH1 has a circumbinary orbit.
See also [ edit ]
References [ edit ]
^ a b USA Today, "Smallest, most distant planet outside solar system found", Malcolm Ritter, 25 January 2006 (accessed 5 August 2010)
^ Schneider, J. "Notes for star PA-99-N2". The Extrasolar Planets Encyclopaedia . Retrieved 2010-08-06.
^ Exoplaneten.de, "The Microlensing Event of Q0957+561" (accessed 5 August 2010)
^ 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
^ a b c "Planet Found in Nearest Star System to Earth". European Southern Observatory. 16 October 2012 . Retrieved 2012-10-17.
^ Lee, T. A. (October 1970), "Photometry of high-luminosity M-type stars", Astrophysical Journal 162: 217, Bibcode: 1970ApJ...162..217L, doi: 10.1086/150648
^ "NASA, ESA Telescopes Find Evidence for Asteroid Belt Around Vega" (Press release). Whitney Clavin, NASA. 8 January 2013 . Retrieved 4 March 2013.
^ National Post, "Astronomers discover new planet WASP-17b almost twice Jupiter's size", Shane Dingman, 14 August 2009 (accessed 5 August 2010)
^ a b c 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 Retrieved 28 November 2010
^ "HEC Top 10 Lists of Exoplanets" . Retrieved 11 March 2013.
^ a b David M. Kipping et al.. "Detection of visible light from the darkest world". Monthly Notices of the Royal Astronomical Society . Retrieved 2011-08-12.
^ a b c Schneider, J.. "Notes for planet Fomalhaut B". The Extrasolar Planets Encyclopaedia. http://exoplanet.eu/planet.php?p1=Fomalhaut&p2=b. Retrieved 2010-11-28.
^ Schneider, J. "Notes for Ross 458(AB)". The Extrasolar Planets Encyclopaedia.
^ "Notes for star KOI-55". Extrasolar Planets Encyclopedia . Retrieved 1 January 2012.
^ "Notes for Planet KOI-55 c". Extrasolar Planets Encyclopedia . Retrieved 1 January 2012.
^ a b ScienceDaily, "Students Find Jupiter-Sized Oddball Planet", 22 April 2009 (accessed 5 August 2010)
^ "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
^ a b c d Chow, Denise (December 6, 2013). "Giant Alien Planet Discovered in Most Distant Orbit Ever Seen". space.com . Retrieved December 8, 2013.
^ Bailey, Vanessa; et al. (December 4, 2013). "HD 106906 b: A planetary-mass companion outside a massive debris disk". Pre-print. arXiv: 1312.1265.
^ OROSZ J., WELSH W., CARTER J., FABRYCKY D., COCHRAN W. & 35 additional authors (2012). "Kepler-47: A Transiting Circumbinary Multi-Planet System". Science. v1 337 (6101): 1511–4. arXiv: 1208.5489. Bibcode: 2012Sci...337.1511O. doi: 10.1126/science.1228380. PMID 22933522.
^ Laurance R. Doyle, Joshua A. Carter, Daniel C. Fabrycky, et al., Laurance R.; Carter; Fabrycky; Slawson; Howell; Winn; Orosz; Andrej Prsa et al. (2011). "Kepler-16: A Transiting Circumbinary Planet". arXiv: 1109.3432v1 [ astro-ph.EP].
^ J. H. Telting, S. Charpinet. "A compact system of small planets around a former red-giant star". Nature . Retrieved 23 April 2013.
^ a b c Schneider, J.. "Notes for planet HD 13189 b". The Extrasolar Planets Encyclopaedia. http://exoplanet.eu/planet.php?p1=HD+13189&p2=b. Retrieved 2010-11-28.
^ a b c Schneider, J.. "Notes for planet 2M J044144 b". The Extrasolar Planets Encyclopaedia. http://exoplanet.eu/planet.php?p1=2M+J044144&p2=b. Retrieved 2010-11-28.
^ a b c d e The Extrasolar Planets Encyclopaedia. http://exoplanet.eu/catalog/hd_164922_b/. Retrieved 2012-12-19.
External links [ edit ]