description HD 168443 b Overview
HD 168443 b is a massive giant exoplanet orbiting the G-type star HD 168443. Its minimum mass is about eight times that of Jupiter, and it completes an orbit in approximately 58 days on a notably eccentric path. The system is known for containing two massive companions detected through their gravitational effects on the host star, although the outer companion is much more massive than an ordinary planet.
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How massive is HD 168443 b?
HD 168443 b has a minimum mass of about eight times Jupiter's mass. The word minimum is used because radial velocity measures only the mass component related to the system's orbital inclination.
How long does HD 168443 b take to orbit its star?
HD 168443 b completes an orbit in approximately 58 days. Its path is notably eccentric, so its distance from HD 168443 changes substantially during an orbit.
How was HD 168443 b discovered?
It was detected through radial-velocity measurements of the G-type star HD 168443. The same system is known for hosting a second massive companion.
What makes the HD 168443 system unusual?
The system contains two massive companions detected through their gravitational effects on the star. HD 168443 b is the inner planet, while the outer companion has also been discussed as a possible brown-dwarf-mass object.
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