HD 129456, also known by its Bayer designation c1 Centauri (c1 Cen), is a star in the constellation Centaurus. c¹ Centauri is an orange K-type giant with an apparent magnitude of +4.06. It is approximately 209 light years from Earth. References Centauri, c1 Centaurus (constellation) 129456 K-type giants 5485 072010 Durchmusterung objects