HD 22781

HD 22781, is a single star about $0.75$ away. It is a K-type main-sequence star. The star’s age is poorly constrained at $0.7$ billion years, but is likely similar to that of the Sun. HD 22781 is heavily depleted in heavy elements, having just 45% of Sun's concentration of iron, yet is comparatively rich in carbon, having 90% of Sun`s abundance.

An imaging survey in 2012 has failed to find any stellar companions, suggesting HD 22781 is a single star.

Planetary system
In 2011 a transiting superjovian planet or brown dwarf b was detected on an extremely eccentric orbit. It is located just outside of the conservative habitable zone of the parent star. Planets around such metal-poor stars are rare; the only three known similar cases are HD 111232 and HD 181720.

In 2012, a radial velocity data review indicated there are no additional giant planets in the system.