description HD 69830 d Overview
HD 69830 d is an extrasolar planet orbiting the K-type orange dwarf star HD 69830, located approximately 41 light-years away in the constellation Puppis. Discovered in 2006 through radial velocity measurements, it is the outermost of three confirmed Neptune-mass planets within the system. The planet completes its orbit in approximately 197 days, positioning it near the inner edge of the host star's estimated habitable zone. It is considered a significant subject in planetary science due to the system's unique asteroid belt and planetary architecture.
help HD 69830 d FAQ
How was HD 69830 d discovered?
HD 69830 d was found through radial-velocity measurements, which detect the small movement a planet induces in its star. The discovery was reported in 2006 as part of a three-planet system.
What kind of star does HD 69830 d orbit?
It orbits HD 69830, a K-type orange dwarf in the constellation Puppis. The star is about 41 light-years away, making the system relatively close by exoplanet standards.
How does HD 69830 d compare with Earth?
It is a Neptune-mass planet, so it is far more massive than Earth and is not expected to have an Earth-like rocky surface. Its orbit is also much shorter than Earth's year, lasting roughly 197 days.
Is HD 69830 d in the star's habitable zone?
It orbits farther from HD 69830 than the system's inner planets, but it is a Neptune-mass world rather than an Earth-sized terrestrial planet. Habitability claims therefore cannot be made from orbital distance alone.
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