CHXR 73 is a star in the constellation Chamaeleon, about 620 light-years away from Earth.
The star is located within Cha I, a molecular cloud. It has a low temperature of 3,490 K typical of red dwarfs, but unlike typical red dwarfs it has an unusually large radius of —this is because of its young age, only 8 million years. Planetary system A companion, CHXR 73 b, has been found via direct imaging. CHXR 73 has a mass of about 12 Jupiters. This is close to the theoretical boundary between planets and brown dwarfs, making its classification difficult.
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