HD 199223
HD 199223 (HR 8010) is a double star in the equatorial constellation Delphinus. However, the system was originally in Equuleus prior to the creation of official IAU constellation borders. The components have a separation of  at a position angle of  as of 2016. They have apparent magnitudes of 6.34 and 7.49 and distances of 354 and 359 light years respectively. The system is drifting closer with a radial velocity of . The brighter component has a stellar classification of G8 III/IV, indicating that it is a G-type star with the blended luminosity class of a giant star and a subgiant. It has 125% of the mass of the Sun and an enlarged radius of . It shines at 37.1 times the luminosity of the Sun from its photosphere at an effective temperature of , giving it a yellow glow. HD 199223A's iron abundance is 135% that of the Sun and it spins modestly with a projected rotational velocity less than . As for the dimmer one, it is classified as an F/G star, and is calculated to be an F-type subgiant. It has 146% of the mass of the Sun and 2.1 times its radius. It radiates with a luminosity of  from its photosphere at an effective temperature of , giving it a yellow white glow. References

Delphinus
199223
103301
8010
G-type subgiants
G-type giants
BD+03 4461
Equulei, 1
Double stars
F-type subgiants