Proxima

: It has about 12.5% of the Sun's mass and 14% of its diameter.

: M-type red dwarf and a "flare star," prone to sudden, violent increases in brightness due to magnetic activity.

: Its surface temperature is about 3,000 K, much cooler than the Sun’s 5,778 K. 2. The Planetary System

Proxima Centauri is a small, dim red dwarf star located approximately from Earth in the constellation Centaurus. It is part of the Alpha Centauri triple star system, gravitationally bound to the binary pair Alpha Centauri AB with an orbital period of roughly 550,000 years. Stellar Characteristics