HD 217107 is a Sun-like G-type star (about 1.04 solar masses, 5,622 K, 1.22 solar radii), 20.1 light-years from Earth. HD 217107 b is a 1.45-Jupiter-mass companion, with an orbital period of 7.1 days, at 0.074 AU from its star, on an eccentric orbit (e ≈ 0.13), discovered in 1998 via radial velocity. HD 217107 c is a 4.37-Jupiter-mass companion, with an orbital period of 14.1 years, at 5.922 AU from its star, on an eccentric orbit (e ≈ 0.39), discovered in 2005 via radial velocity.

HD 217107 - System

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