K2-3

K2-3, also known as EPIC 201367065, is a red dwarf star with three known planets. It is on the borderline of being a late orange dwarf/K-type star, but because of its temperature, it is classified as a red dwarf (4,000 K is typically the division line between spectral class M and K).

At a distance of 143 ly, the star's proximity means it is bright enough to make it feasible for astronomers to study the planets' atmospheres to determine whether they are like Earth's atmosphere and possibly conducive to life.

Planetary system
K2-3 has three confirmed exoplanets, discovered in 2015. All are low-density super-Earths or sub-Neptunes, with the outermost orbiting near the inner edge of the habitable zone.