Discovery date April 29, 2009 Other detection methods Radial velocity | Discoverer(s) Hartman et al. Discovery status Published | |
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Discovery site Cambridge, Massachusetts | ||
HAT-P-12b is an extrasolar planet approximately 465 light years away from Earth, orbiting the 13th magnitude K-type star HAT-P-12, which is located in Canes Venatici constellation. It is a transiting hot Jupiter that was discovered by the HATNet Project on April 29, 2009.
HAT-P-12b is a H/He-dominated gas giant planet with a core mass of 11.3+2.6
−2.1 M⊕ and is moderately irradiated by its low-metallicity host star. Therefore, HAT-P-12b is most likely an H/He-dominated planet with a core of perhaps ~10 M⊕, and a total metal fraction of ~15%. This makes HAT-P-12b the least massive H/He-dominated gas giant planet found to date; the previous record holder was Saturn.
References
HAT-P-12b Wikipedia(Text) CC BY-SA