Beta_Pavonis
Beta Pavonis
Star in the constellation Pavo
Beta Pavonis, Latinised from β Pavonis, is a single,[9] white-hued star in the southern constellation of Pavo. It can be seen with the naked eye, having an apparent visual magnitude of 3.42.[2] Based upon an annual parallax shift of 24.14 mas as seen from Earth, it is located 135 light-years from the Sun. It is moving away from the Sun with a radial velocity of +4 km/s.[6] Beta Pavonis is a member of the Ursa Major Moving Group, a set of stars that share a similar motion through space.[10]
Zorec and Royer (2012) list a stellar classification for this star of A5 IV,[3] indicating it is an evolving subgiant star that has consumed the hydrogen at its core and has begun to expand onto the red giant branch. However, Houk (1979) listed a more evolved class of A7 III,[4] suggesting it is already a giant star. It has about 2.3[7] times the Sun's radius and 2.51[3] times the mass of the Sun. At the estimated age of 305[8] million years, the star still has a relatively high rate of spin, having a projected rotational velocity of 75 km/s.[3] Beta Pavonis is radiating 66[3] times the Sun's luminosity from its photosphere at an effective temperature of about 8,184 K.[8]