EBLM J0555-57Ab

EBLM J0555-57 is a triple star system located in the Pictor constellation approximately 600 light-years from Earth. EBLM J0555-57Ab, which is the smallest star in the system, orbits its parent star (EBLM J0555-57Aa) under a period of 7.8 days, and at the time of its discovery, it was the smallest known star with a mass sufficient to enable the fusion of hydrogen in its core, with a diameter around that of Saturn's.