HD_193556
HD 193556
G-type star in the constellation Delphinus
HD 193556 (HR 7778) is a solitary star in the equatorial constellation Delphinus. It has an apparent magnitude of 6.17,[2] making it visible to the naked eye under ideal conditions. Parallax measurements place the object at a distance of 467 light years[1] and it is currently receding with a heliocentric radial velocity of 11.7 km/s.[5]
HD 193556 has a stellar classification of G8 III,[3] indicating that it is a red giant. It has 2.65 times the mass of the Sun and is currently 490 million years old,[7] having expanded to 11.33 times the radius of the Sun.[8] It shines with a luminosity of 102 L☉[9] from its enlarged photosphere at an effective temperature of 5,104 K,[10] giving it a yellow glow. HD 193556 has an iron abundance around solar level[10] and spins leisurely with a poorly constrained projected rotational velocity of 1.5 km/s.[11]