Tags: Star.
Struve 2398 (Gliese 725) is a binary star system in the constellation Draco. Both stars are red dwarfs and both display variability common to flare stars. The orbital period for the pair is about 295 years with an average distance of about 56 astronomical units and the eccentricity of the orbit is 0.70.Struve 2398 is star number 2398 in the Struve Double Star Catalog of Baltic-German astronomer Friedrich Georg Wilhelm von Struve.