hip-97757

Its story

In Cygnus burns another star of the rare O class, a blue supergiant of magnitude 5.6 that rises in the summer nights of the northern hemisphere. It is one of the hottest and most luminous bodies accessible to a trained eye under deep skies, thousands of times more radiant than the Sun and with a surface temperature several times the solar value. It belongs to the select group of stars that trace the visible contours of the galactic spiral arms.