HD 220074 and Its Planet

HD 220074 is a star 1060 light-years away with a spectral type of M2 III, and it hosts one known planet. Its age is 4.5 billion years, its mass is 1.2 solar masses, its radius is 49.7 solar radii, and its temperature is 3940 K. That radius estimate is larger than the Sun's, while the temperature is cooler than the Sun's.

The planet HD 220074 b was discovered in 2012 by the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion; repeated wobbles reveal the planet and its orbital period. Its minimum mass, a lower bound on its true mass, is 5290 Earth masses, larger than Earth's and roughly 16.6 times Jupiter's mass. Its orbital period is 672 days.