M Centauri (M Cen) is a binary star in the constellation Centaurus. It is approximately 260 light years from Earth. M Centauri is a yellow G-type giant with an apparent magnitude of +4.64. It is a spectroscopic binary with an orbital period of 437 days. References Centauri, M Centaurus (constellation) Spectroscopic binaries G-type giants 5172 119834 067234 Durchmusterung objects