description HAT-P-2b Overview
HAT-P-2b is a confirmed gas-giant exoplanet that crosses the disk of its host star, HAT-P-2, an F-type star. It has a mass of about nine Jupiters, completes an orbit in roughly 5.6 days, and follows an unusually eccentric path with an eccentricity near 0.52. The planet was identified by the HATNet transit survey and announced in 2007, making it a useful subject for studying strongly irradiated giant planets.
help HAT-P-2b FAQ
How massive is HAT-P-2b?
HAT-P-2b has a mass of about nine Jupiters. That places it firmly in the gas-giant category.
How long is a year on HAT-P-2b?
The planet completes an orbit in roughly 5.6 days. Its short orbital period results from its close distance to the host star HAT-P-2.
What is unusual about HAT-P-2b's orbit?
Its orbit is highly eccentric, with an eccentricity near 0.52. That means its distance from HAT-P-2 changes much more than it does for a nearly circular orbit.
How was HAT-P-2b found?
HAT-P-2b was identified as a transiting planet because it crosses the disk of its host star. The host, HAT-P-2, is an F-type star.
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