Tags: Planet.
HD 171238 b is an extrasolar planet which orbits the G-type main sequence star HD 171238 located approximately 164 light years away in the constellation Sagittarius. This planet has minimum mass two and a half times greater than Jupiter and orbits two times closer to the star than Jupiter to the Sun. However this planet orbits in an eccentric orbit about two astronomical units difference between periastron and apastron distances.