Red dwarf HIP 21543 Ab is located 127 light years away from the Sun.
It is a single star, that has 21 % of solar mass.
For now, there are no known exoplanets in this star system.
Red dwarfs are small reddish stars, that are by far the most common type of star in solar neighborhood. Their mass is usually between 10 and 50 % of solar mass.