description HD 10180 g Overview
HD 10180 g is a proposed exoplanet candidate orbiting the Sun-like star HD 10180, located about 127 light-years from Earth. It was identified from radial-velocity measurements and was announced in 2010 as part of a possible system containing as many as nine planets. The object was described as a cold giant planet and as a possible member of the system's habitable-zone region, although its candidate status is important.
help HD 10180 g FAQ
Why is HD 10180 g called a proposed candidate?
HD 10180 g is based on a possible radial-velocity signal from the star HD 10180. Its candidate status means the signal is not presented as an unquestioned, independently confirmed planet.
When was HD 10180 g announced?
The candidate was announced in 2010 as part of a possible system containing as many as nine planets. The word possible matters because the full nine-planet interpretation was not a simple confirmed count.
How was HD 10180 g identified?
It was identified from radial-velocity measurements of HD 10180. Those measurements track changes in the star's motion that may be caused by orbiting bodies.
How many planets might the HD 10180 system contain?
The 2010 announcement described a possible system with as many as nine planets. HD 10180 g belongs to that proposed interpretation, so the maximum is not the same as a guaranteed confirmed count.
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