HD 155358 is a Sun-like G-type star (about 0.92 solar masses, 5,900 K), 43.6 light-years from Earth. HD 155358 b is a 0.99-Jupiter-mass companion, with an orbital period of 194 days, at 0.630 AU from its star, on an eccentric orbit (e ≈ 0.17), discovered in 2007 via radial velocity. HD 155358 c is a 0.82-Jupiter-mass companion, with an orbital period of 1.07 years, at 1.020 AU from its star, on an eccentric orbit (e ≈ 0.16), discovered in 2007 via radial velocity. Mutual gravitational tugs between the planets can slowly reshape their orbits, preserving clues to the system's assembly.

HD 155358 - System

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