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TOI-2267: Earth-sized Worlds in a Tight Binary — A New Benchmark for Planet Formation
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Join us as we explore TOI-2267, a 190-light-year system where two cool M-dwarfs orbit incredibly close (about 8 AU apart) and host three Earth-sized worlds. The two confirmed planets, TOI-2267 b and c (≈1.0 and ≈1.14 Earth radii) orbit the primary in a delicate 3:2 resonance, surviving in a chaotic gravitational environment, while a third candidate, TOI-2267.02, could be lurking around the secondary star. If confirmed, this would be the first known binary with transiting planets around both stars—a T-type configuration that tests current planet-formation theories. We discuss how resonant dynamics, migration, and transit-timing variations—measurable with JWST—could pin down masses, confirm the architecture, and even probe atmospheres, making TOI-2267 a natural laboratory for rocky planet formation under extreme gravity.
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