2_Centauri
2 Centauri
Star in the constellation Centaurus
2 Centauri is a single[13] star in the southern constellation of Centaurus, located approximately 183 light-years from Earth.[3] It has the Bayer designation g Centauri;[12] 2 Centauri is the Flamsteed designation. This object is visible to the naked eye as faint, red-hued star with an apparent visual magnitude of 4.19.[4] It is moving away from the Earth with a heliocentric radial velocity of +41 km/s.[8] The star is a member of the HR 1614 supercluster.[14]
This is an evolved red giant star with a stellar classification of M5 III.[6] It is classified as a semiregular variable star and its brightness varies from magnitude +4.16 to +4.26[5] with a period of 12.57 days.[15] The star has around 70[10] times the Sun's radius and is radiating 72[4] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 3,398 K.[11]