WASP-22b

WASP-22b
Exoplanet List of exoplanets

A comparison between the sizes of WASP-22b (right) and Jupiter
Parent star
Star WASP-22
Constellation Orion
Right ascension (α) 03h 31m 16.3274s[1]
Declination (δ) −23° 49′ 10.852″[1]
Apparent magnitude (mV) 12.0
Distanceapprox. 1000[1] ly
(approx. 320[1] pc)
Mass (m) 1.1 (± 0.3) M☉
Radius (r) 1.13 (± 0.03) R☉
Temperature (T) 6000.0 (± 100.0) K
Metallicity [Fe/H] -0.05 (± 0.08)
Orbital elements
Epoch J2000
Semi-major axis(a) 0.04698 (± 0.00037) AU
Eccentricity (e) 0.0
Orbital period(P) 3.5327313 (± 5.8e-06) d
Inclination (i) 88.26 (± 0.91)°
Time of transit (Tt) 2455497.39967 (± 0.00025) JD
Physical characteristics
Mass(m)0.617 MJ
Radius(r)1.199 RJ
Temperature (T) 1298 K
Discovery information
Discovery date Published December 2010
Discoverer(s) Maxted, et. al.
Discovery method Transit photometry
Discovery site South African Astronomical Observatory
Discovery status
Database references
Extrasolar Planets
Encyclopaedia		data
SIMBADdata
Exoplanet Archivedata
Open Exoplanet Cataloguedata

WASP-22b is an extrasolar planet orbiting the Sun-like star WASP-22 320 parsecs (1,000 ly) in the constellation Orion.[1][2] This hot Jupiter has an orbit of 3.53 days and a mass of 0.617 MJ was detected by transit via SuperWASP. The system is a hierarchical triple system.[3]

References

  1. 1 2 3 4 5 Brown, A. G. A; et al. (2016). "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties". Astronomy and Astrophysics. 595. A2. arXiv:1609.04172. Bibcode:2016A&A...595A...2G. doi:10.1051/0004-6361/201629512. Gaia Data Release 1 catalog entry
  2. ↑ "CONFIRMED PLANET OVERVIEW PAGE". Nasa Exoplanet Archive. Retrieved 2016-04-26.
  3. ↑ Maxted, P. F. L.; Anderson, D. R.; Gillon, M.; Hellier, C.; Queloz, D.; Smalley, B.; Triaud, A. H. M. J.; West, R. G.; Wilson, D. M. (2010-01-01). "WASP-22 b: A Transiting "Hot Jupiter" Planet in a Hierarchical Triple System". The Astronomical Journal. 140 (6): 2007. arXiv:1004.1514. Bibcode:2010AJ....140.2007M. doi:10.1088/0004-6256/140/6/2007. ISSN 1538-3881.


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