description HAT-P-13b Overview
HAT-P-13b is a transiting hot Jupiter discovered by the HATNet survey and announced in 2009. It circles its Sun-like host star in a short-period orbit, while the same system contains a more distant and substantially more eccentric companion detected through radial-velocity measurements. The system has been studied because interactions between the planets can help constrain the orbital dynamics and possible internal properties of HAT-P-13b.
help HAT-P-13b FAQ
What kind of planet is HAT-P-13b?
HAT-P-13b is a transiting hot Jupiter, meaning it is a large gas giant on a very short orbit. The HATNet survey announced its discovery in 2009.
How was HAT-P-13b discovered?
HAT-P-13b was first identified when it passed in front of its host star and caused a measurable dip in brightness. Follow-up radial-velocity observations confirmed the planet's gravitational effect.
Does the HAT-P-13 system have another planet?
Yes, the system also contains a more distant companion detected through radial-velocity measurements. That outer companion has a substantially more eccentric orbit than HAT-P-13b.
Why do astronomers study HAT-P-13b?
The inner planet transits, while the outer companion affects the system's gravitational dynamics. Having both transit and radial-velocity information makes HAT-P-13 a useful system for studying planetary structure and orbital interactions.
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