● Hadar Hadar is a star in Centaurus. ### ############# ################### ##################### ####################### ####################### ######################### ####################### ####################### ##################### ################### ############# ### Type Blue-white giant Constellation Centaurus Magnitude 0.6 Spectral type B1III Distance 525 light years Double star components 1.3″ apart You need naked eye Known as Bayer β Cen Yale HR 5267 More information about Hadar Hadar is the fainter of The Pointers, the two stars that aim at the Southern Cross, and it looks like a near neighbour of Rigil Kentaurus beside it while actually lying more than a hundred times further away, at 525 light years. It is three hot blue stars rather than one, and the pair at the centre swing around each other every 357 days. Its Arabic name هدار is not settled, and it also answers to Agena, from the Latin genu, "knee", which is where it sits in the figure of Centaurus. Bayer lettered the stars of each constellation in his Uranometria of 1603, in order of brightness. He was working from Tycho's magnitudes by eye, and the order he recorded is often wrong. First published in 1930 by Yale astronomer Frank Schlesinger, and maintained since, the Yale Bright Star Catalogue lists every star down to magnitude 6.5. It contains 9,110 stars. where it is tonight: skymap.sh/Hadar