Tags: Star.
CM Draconis (GJ 630.1A) is an eclipsing binary system approximately 47 light-years away in the constellation of Draco (the Dragon). The system consists of two nearly identical red dwarf stars located in the constellation Draco. The two stars orbit each other with a period of 1.27 days with a separation of 2.7 million kilometres. Along with two stars in the triple system KOI 126 the stars in CM Draconis are the lightest stars with precisely measured masses and radii.