8_Vulpeculae
8 Vulpeculae
Star in the constellation Vulpecula
8 Vulpeculae is star located about 457[1] light years away in the northern constellation of Vulpecula.[6] It lies just 7′ from Alpha Vulpeculae and the two form an optical double.[7] 8 Vulpeculae is visible to the naked eye as a faint, yellow-orange hued star with an apparent visual magnitude of 5.82. It is moving closer to the Earth with a heliocentric radial velocity of −29 km/s.[2]
This is an aging giant star with a stellar classification of K0 III,[3] which indicates it has exhausted the hydrogen supply at its core and evolved away from the main sequence. It is 324[5] million years old with three[4] times the mass of the Sun and has expanded to 14[1] times the Sun's radius. The star is radiating 100[1] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,915 K.[1]