Kepler-122 is a Sun-like F-type star (about 0.98 solar masses, 6,050 K, 1.22 solar radii), 1,027 light-years from Earth. The system hosts 5 confirmed planets on orbits ranging from 5.8 days to 56.3 days. With 5 confirmed worlds, Kepler-122 is a densely packed system whose resonances, spacing, and formation history are active research topics. Mutual gravitational tugs between the planets can slowly reshape their orbits, preserving clues to the system's assembly. Kepler-122 b orbits well inside Earth's distance from the Sun. At roughly 1,027 light-years, Kepler-122 lies far beyond the nearest stars yet remains reachable to large survey telescopes.

Kepler-122 - System

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