description HD 142 c Overview
HD 142 c is a confirmed outer giant planet orbiting the star HD 142, a nearby solar-type star. Its existence was inferred from long-term radial-velocity monitoring, which revealed a second, slower signal after the inner planet HD 142 b had been identified. HD 142 c has a multi-year orbital period and a minimum mass in the giant-planet range. The system provides a case for examining how massive planets are arranged around a star similar to the Sun.
help HD 142 c FAQ
What is HD 142 c?
HD 142 c is a confirmed outer giant planet orbiting the nearby solar-type star HD 142. It was found after long-term observations revealed a second, slower radial-velocity signal.
How is HD 142 c different from HD 142 b?
HD 142 c is the outer planet and has a multi-year orbit, while HD 142 b is the inner planet. The two were distinguished through the different timing of their effects on the host star.
How was HD 142 c discovered?
It was inferred from long-term radial-velocity monitoring. Astronomers measured changes in the star's motion caused by the planet's gravity.
Is HD 142 c a rocky planet?
It is described as a giant planet, so it is not classified like a small terrestrial world such as Earth. Its measured signal indicates a large planetary companion with a multi-year orbit.
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