45_Draconis
45 Draconis
Star in the constellation Draco
45 Draconis is a single[10] star located in the northern circumpolar constellation of Draco, around 3,500 light years from the Earth.[1] 45 Draconis is the Flamsteed designation, while it has the Bayer designation of d Draconis. This object is visible to the naked eye as a faint, yellow-white hued star with an apparent visual magnitude of 4.78.[2] Radial velocity measurements indicate it is moving closer to the Sun at the rate of −12.5 km/s.[4]
Lyubimkov et al. (2012) assigned this star a stellar classification of F7Ib,[3] matching an F-type supergiant. It is approximately 33 million years old with 8.2[3] times the mass of the Sun and about 62[6] times the Sun's radius. The star is radiating 5,450[7] times the Sun's luminosity from its photosphere at an effective temperature of 6,151 K.[5]