WASP-31b

WASP-31b
Exoplanet List of exoplanets

"Hot Jupiter" exoplanet WASP-31b (artist concept)
Parent star
Star WASP-31[1]
Constellation Crater[1][2]
Right ascension (α) 11h 17m 45.0s[1]
Declination (δ) −19° 03′ 17″[1]
Apparent magnitude (mV) 11.7[1]
Distance1305[3][1] ly
(400[1] pc)
Spectral type F[1]
Mass (m) 1.16±0.026[1] M☉
Orbital elements
Semi-major axis(a) 0.04657±0.00034[1] AU
Eccentricity (e) 0[1]
Orbital period(P) 3.40591[1] d
Inclination (i) 84.54±0.027[1]°
Physical characteristics
Mass(m)0.478±0.03[1] MJ
Radius(r)1.537±0.06[1] RJ
Discovery information
Discovery date 2010[1]
Discoverer(s) Anderson, D.R. et al.[4]
Discovery method Primary transit[1]
Discovery site WASP[1]
Discovery status Confirmed[1]
Database references
Extrasolar Planets
Encyclopaedia		data
SIMBADdata
Exoplanet Archivedata
Open Exoplanet Cataloguedata

WASP-31b is a low-density (puffy) "hot Jupiter" extrasolar planet orbiting the metal-poor dwarf star WASP-31.[4] The exoplanet was discovered in 2010 by the WASP project.[1][4] WASP-31b is in the constellation of Crater,[2] and is about 1305 light-years[3] (light travel distance) from Earth.[1]

Characteristics

WASP-31b is a low-density (puffy) "hot Jupiter" exoplanet with a mass about 0.48 times that of Jupiter and a radius about 1.55 times that of Jupiter.[1][4] The exoplanet orbits WASP-31, its host star, every 3.4 days.[1]

Comparison of "hot Jupiter" exoplanets, including WASP-31b
(top row; 3rd from left) (artist concept)

From top left to lower right: WASP-12b, WASP-6b, WASP-31b, WASP-39b, HD 189733b, HAT-P-12b, WASP-17b, WASP-19b, HAT-P-1b and HD 209458b.

See also

References

  1. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Staff (2018). "Planet WASP-31 b". Extrasolar Planets Encyclopaedia. Retrieved 2 March 2018.
  2. 1 2 DJM (2018). "Finding the constellation which contains given sky coordinates". djm.cc. Retrieved 2 March 2018.
  3. 1 2 Kyle (2018). "Convert Parsecs to Light Years". KylesConverter.com. Retrieved 2 March 2018.
  4. 1 2 3 4 Anderson, D.R.; et al. (2011). "WASP-31b: a low-density planet transiting a metal-poor, late-F-type dwarf star" (PDF). Astronomy & Astrophysics. 531: A60. arXiv:1011.5882. Bibcode:2011A&A...531A..60A. doi:10.1051/0004-6361/201016208.

Media related to WASP-31b at Wikimedia Commons

Coordinates: 11h 17m 45.0s, −19° 03′ 17″

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