TOI-2267
TOI-2267 is a binary star located away from the Sun. The system has a visual apparent magnitude of 15.4, too faint to be seen with the naked eye. It consists of two red dwarfs that are separated by only 8 AU.
Planetary system
The star system hosts three confirmed Earth-sized planets, but it is not known which star each planet orbits. Two of the planets have similar orbital periods, so it is unlikely that all three planets orbit the same star, which would make TOI-2267 the second system known to host transiting planets around both stars. This configuration of planets might give more insights into studying the formation and evolution of planets in compact binary star systems. Alternatively, the planets may all orbit the same star in a very compact resonant configuration, which would make TOI-2267 the most compact exoplanetary system known.The discovery of the planets was announced in 2025, using data from TESS as well as ground-based telescopes. Initially only two planets could be confirmed, and the third remained a candidate. A follow-up study a few months later confirmed the third planet.