HD 141399

HD 141399 is a K-type subgiant star 121 light-years away in the constellation of Boötes. Its surface temperature is 5602 K. HD 141399 is enriched in heavy elements compared to the Sun, with a metallicity Fe/H index of 0.36. The star has very low starspot activity.

Planetary system

In 2014, four planets orbiting HD 141399 were discovered by the radial velocity method. Planet HD 141399c is possibly located within the habitable zone. The planetary orbits are close to high-order mean-motion resonance and closely conform to the Titius–Bode law. Two additional planets, one with a period of 462.9 days, are suspected by analogy with the orbits of the Solar System planets. The planetary orbits around HD 141399 are expected to "jump" periodically on a timescale of a few million years between several quasi-stable configurations due to planet-planet interactions. HD 141399 is one of only two known planetary systems consisting of at least four massive gas giants.