Sig-2

Its story

It belongs to the Hyades, the closest open cluster to Earth, that luminous V which traces the Bull's head and shares a cradle with hundreds of sibling stars born some 625 million years ago. At 156 light-years away this fast-spinning A-type white forms, with its companion Sigma 1, a pair that splits cleanly in binoculars. To contemplate the small fork that includes it is to look at one of the first stellar gatherings whose joint membership was ever mapped.