6_Equulei
6 Equulei
Star in the constellation Equuleus
6 Equulei is a probable (95% chance) astrometric binary[9] star system in the northern constellation of Equuleus, located 380 light years from the Sun. It is barely visible to the naked eye as a dim, white-hued star with an apparent visual magnitude of 6.07.[2] The system is moving further away from the Earth with a heliocentric radial velocity of +6.9 km/s.[5] It forms a wide optical double with γ Equulei, at an angular separation of 336 arcseconds in 2011.[10]
The visible component is an Ap star[3] with a stellar classification of A2Vs,[3] matching the evolutionary state of an A-type main sequence star while displaying "sharp" absorption lines. It is an estimated 970[6] million years old with a projected rotational velocity of 65 km/s.[3] The star has 2.6[3] times the mass of the Sun and around 1.7[7] times the Sun's radius. It is radiating 71[3] times the luminosity of the Sun from its photosphere at an effective temperature of 9,078 K.[3]