ADS 7251

ADS 7251 is a binary star system 20.09 light years from the Sun. Both are of nearly equal brightness, but ADS 7251 A, which is 0.06 magnitudes (1.2 times) brighter than ADS 7251 B, is a red dwarf of spectral type M0.0. The latter is spectral type K7.0 and slightly further away. The stellar system is over one billion years old, and consists of two similar M0-type stars: Gliese 338A (also known as GJ338A or HD 79210) and Gliese 338B (GJ 338B or HD 79211).

Planetary system
ADS 7251 B also known as Gliese 338B has one known super-Earth planet detected by radial velocity called Gliese 338Bb. The newfound planet orbits on the inner edge of the habitable zone and is much more massive than Earth.They analyzed radial velocity data from the CARMENES spectrograph as well as ground-telescope photometry from Las Cumbres and Sierra Nevada observatories.