WASP-22b

Jovian size planet orbiting WASP-22 From Wikipedia, the free encyclopedia

WASP-22b

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

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WASP-22b / Koyopa'
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A comparison between the sizes of WASP-22b (right) and Jupiter
Discovery
Discovered byMaxted, et al.
Discovery siteSouth African Astronomical Observatory
Discovery datePublished December 2010
Transit photometry
Orbital characteristics
Epoch J2000
0.04698 (± 0.00037) AU
Eccentricity0.0
3.5327313 (± 5.8e-06) d
Inclination88.26 (± 0.91)
StarWASP-22
Physical characteristics
1.199 RJ
Mass0.617 MJ
Temperature1298 K
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    Naming

    In 2019 the IAU announced as part of NameExoWorlds that WASP-22 and its planet WASP-22b would be given official names chosen by school children from Guatemala.[4][5] The star WASP-22 is named Tojil. Tojil is the name of one of the Mayan deities related to rain, storms, and fire. The planet WASP-22b is named Koyopa'. Koyopa' is the word associated with lightning in K'iche' (Quiché) Mayan language.[6][7]

    Physical characteristics

    The Rossiter-McLaughlin effect-based study in 2011 has determined the planetary orbit is slightly misaligned with the rotational axis of the parent star, with a reported angle of 22±16 degrees.[8]

    References

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