hip-111841

Its story

10 Lacertae is a blue colossus of O-type —one of the rarest and hottest stellar classes— more than 1,700 light-years away in the small constellation of the Lizard. Despite that vast distance, it reaches magnitude 4.89 thanks to an immense luminosity and a fierce stellar wind. It serves as a classical reference for calibrating other O stars and slips between Cygnus, Cepheus and Andromeda, stitched quietly into the bright fabric of the Milky Way.