HD_212301
HD 212301
Star in the constellation Octans
HD 212301 is a binary star[4] system in the south circumpolar constellation of Octans. This star is also called HIP 110852.[7] With an apparent visual magnitude of 7.76,[2] it is too faint to be visible to the naked eye. The system is located at a distance of 177 light years from the Sun based on parallax,[1] and is drifting further away with a radial velocity of +4.7 km/s.[2] It has an absolute magnitude of 4.06.[2]
The primary, component A, is an F-type main-sequence star with a stellar classification of F8V.[3] It has 20%[5] greater mass than the Sun and a 23%[1] larger radius. Its age is about the same as the Sun and it is spinning with a projected rotational velocity of 5.4 km/s.[6] It is a metal-rich star with 50% more metals than the Sun has.[6] The star is radiating 1.9[1] times the luminosity of the Sun from its photosphere at an effective temperature of 6,169 K.[1]
A secondary companion was announced in 2009. This faint star is located at an angular separation of 4.4″ to the northwest of the primary, corresponding to a projected separation of ~230 AU. This is a red dwarf with an estimated class of M3V and a mass equal to around 35% of the mass of the Sun. The pair share a common proper motion.[4]
A hot jupiter candidate exoplanet was discovered orbiting the primary, based on radial velocity observations taken in 2003 and 2005.[6]