HD 189567

HD 189567 is a star with a pair of orbiting exoplanets, located in the southern constellation of Pavo. It is also known as Gliese 776, CD-67 2385, and HR 7644. The star has an apparent visual magnitude of 6.07, which is bright enough for it to be dimly visible to the naked eye. It lies at a distance of 58 light years from the Sun based on parallax measurements, but is drifting closer with a radial velocity of −10.5 km/s.

The spectrum of HD 189567 presents as an ordinary G-type main-sequence star with a stellar classification of G3V. It has 83% of the mass of the Sun but 110% of the Sun's radius. The star is moderately depleted in heavy elements, having 55% of the solar abundance of iron, but is less depleted in oxygen, having 80% of its solar abundance. It has a low level of magnetic activity in its chromosphere. Age estimates range from 4.11 Gyr based on chromospheric heating to 11.26 Gyr from stellar rotation. The star is radiating 2.1 times the luminosity of the Sun from its photosphere at an effective temperature of 5,726 K.

Planetary system
One exoplanet was discovered around the star in 2011, HD 189567 b. This exoplanet has an estimated minimum mass of 8.5 Earth masses, which means that it is most likely a mini-Neptune. It has an orbital period of 14.3 days, placing it well interior to the habitable zone of the star system. The planet's existence was confirmed in 2021, along with the discovery of a second planet, HD 189567 c.