HD 168863 is an orange K-type dwarf (about 0.80 solar masses, 4,905 K), 39.9 light-years from Earth. HD 168863 b is a 6.78-Jupiter-mass companion, with an orbital period of 40.4 years, at 11.0 AU from its star, on an eccentric orbit (e ≈ 0.19), discovered in 2022 via radial velocity. The planet betrayed itself through the star's reflex motion — a technique that first revealed worlds around Sun-like stars in the 1990s and remains a workhorse of exoplanet discovery. The planet's marked eccentricity suggests past scattering events or perturbations from unseen companions.

HD 168863 - System

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