Δ_Piscis_Austrini
Delta Piscis Austrini
Star in the constellation Piscis Austrinus
Delta Piscis Austrini, Latinized from δ Piscis Austrini, is a yellow-hued star[3] in the southern constellation of Piscis Austrinus. It is visible to the naked eye with an apparent visual magnitude of +4.175.[2] There is a magnitude 9.86[3] common proper motion[3] companion located at an angular separation of 5.2 arc seconds – the pair most likely form a binary star system.[10] Based upon an annual parallax shift of 18.9796 mas as seen from the Gaia satellite, Delta Piscis Austrini is located 172 ± 2 light-years from the Sun.[6]
The primary, component A, is an evolved G-type giant star with a stellar classification of G8 III.[4] At the age of about 3.74 billion years[5] it is a red clump star, which indicates it is generating energy through helium fusion at its core.[7] The star has an estimated 1.42 times the mass of the Sun and it radiates 52 times the solar luminosity from its photosphere at an effective temperature of 4.828 K.[5]
Delta Piscis Austrini is moving through the Galaxy at a speed of 13.8 km/s relative to the Sun. Its projected Galactic orbit carries it between 24,048 and 35,430 light-years from the center of the Galaxy.[11]