description HD 149026 b Overview
A Saturn-sized transiting hot Jupiter discovered in 2005 around HD 149026, notable for an abnormally massive dense core estimated at roughly 70 Earth masses.
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When was HD 149026 b discovered?
HD 149026 b was discovered in 2005 as a transiting hot Jupiter. Its transit passes in front of the star HD 149026 and produces a repeating dip in the star's brightness.
Why is HD 149026 b famous for its core?
Interior models estimated that HD 149026 b has a dense core of roughly 70 Earth masses. That figure is a model estimate rather than a direct measurement of a solid core.
Why is HD 149026 b called a hot Jupiter if it is Saturn-sized?
Hot Jupiter describes a close-orbiting gas giant, not a precise size category. HD 149026 b is Saturn-sized, but its close orbit around HD 149026 makes it a hot Jupiter.
Is HD 149026 b a rocky planet?
No. HD 149026 b is a Saturn-sized gas giant with an unusually massive dense core, not a small rocky world with an Earth-like surface.
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