description HD 74156 c Overview
HD 74156 c is a massive exoplanet orbiting the star HD 74156. It was announced in 2001 together with the inner planet HD 74156 b, based on radial-velocity measurements. The planet has a minimum mass of roughly eight Jupiter masses and follows a long, eccentric orbit, placing it among the system’s outer giant companions. Its large mass and wide orbit made the system an important early example of a multi-planet system with strongly differing orbital periods.
help HD 74156 c FAQ
How massive is HD 74156 c?
HD 74156 c has a minimum mass of roughly eight Jupiter masses. The word minimum matters because radial-velocity measurements depend on the unknown tilt of the orbit.
What is unusual about the orbit of HD 74156 c?
It follows a long, eccentric orbit, meaning the distance from its star changes substantially during the orbit. It is the outer planet in the system described with HD 74156 b.
When was HD 74156 c announced?
It was announced in 2001 together with the inner planet HD 74156 b. Both planets were inferred from radial-velocity measurements.
What kind of planet is HD 74156 c?
It is a very massive exoplanet orbiting HD 74156. With a minimum mass around eight times Jupiter's, it lies near the boundary where astronomers discuss massive planets and possible brown dwarfs.
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