Proxima Centauri, or Alpha Centauri C, is a red dwarf, a small low-mass star, about 4.244 light-years from the Sun in the constellation of Centaurus. It was discovered in 1915 by Robert Innes and is the nearest-known star to the Sun.

Distance to Earth: 4.243 light years

Surface temperature: 3,042 K

Apparent magnitude (B): 12.95

B−V color index: 1.82

U−B color index: 1.26