HD 125612: A Sun-Like Star and Its Three Worlds

HD 125612 is a Sun-like G-type dwarf star 188 light-years away. It is a main-sequence star with a spectral type of G3 V, meaning it belongs to the same broad temperature class as the Sun. The star is 2.1 billion years old, has a mass of 1.1 solar masses, a radius of 1.05 solar radii, and a temperature of 5900 K. Its mass, radius, and temperature estimates are each correspondingly larger or hotter than the Sun's. Three planets are known to orbit this star.

HD 125612 b was discovered in 2007 by the radial velocity method, which detects the wobble a planet's gravity induces in its star's motion. It has a minimum mass of 945 Earth masses, or roughly 2.97 times Jupiter's mass, and orbits in 558 days, the second-shortest period among the listed planets.

HD 125612 c, discovered in 2009, also by radial velocity, is the least massive of the trio in terms of minimum mass: 15.6 Earth masses, larger than Earth. It has the shortest year among the listed planets at 4.15 days.

HD 125612 d, discovered in 2009 by radial velocity, has a reported mass of 2280 Earth masses, roughly 7.18 times Jupiter's mass, and orbits in 2820 days, the longest period among the listed planets.