The yellow-hued primary component, designated HD 125612 A, is an ordinaryG-type main-sequence star with astellar classification of G3V,[3] which indicates it is generating energy throughhydrogen fusion at itscore. It is about 1.4[5] billion years old and is rich in heavy elements, having a 70% greater abundance of iron compared to the Sun. The star has 109% of the mass and 105% of the girth of the Sun. It is radiating 109% of the luminosity of the Sun from itsphotosphere at aneffective temperature of 5,900 K.[3]
Ared dwarf companion star, HD 125612 B, was detected in 2009 at aprojected separation of 4750AU. The possibility of a much closer companion to the primary star was also suggested, though this will need more observation to better define.[4]
There are three known exoplanets in orbit around HD 125612 A. The first was reported in 2007 and designated HD 125612 b, but it did not fully resolve the stellar velocity variations and it was clear there were other companions.[9] Two additional companions, HD 125612 c and d, were reported in 2009.[4] In 2022, the inclination and true mass of the outer planet HD 125612 d were measured viaastrometry.[10]
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