HAT-P-38
HAT-P-38
Star in the constellation Traingulum.
HAT-P-38, formally named Horna, is a star located in the northern constellation Triangulum. It has an apparent magnitude of 12.51,[2] making it readily visible in amateur telescopes but not to the naked eye. The object is located relatively far at a distance of 821 light-years based on Gaia DR3 parallax measurements, but it is drifting closer with a spectroscopic radial velocity of −19.85 km/s. [1]
HAT-P-38 has a stellar classification of G5,[3] indicating that it is a G-type star. It has 88.6% the mass of the Sun[4] and 101% the radius of the Sun.[5] It radiates 67.72% the luminosity of the Sun[1] from its photosphere at an effective temperature of 5,330 K,[4] giving it a yelllowish-orange hue. HAT-P-38 is slightly metal enriched with an iron abundance 115% that of the Sun's.[7] It is estimated to be approximately 10.1 billion years old,[7] which is more than twice the age of the Sun. It spins modestly with a projected rotational velocity of 0.4 km/s.[4]