Theta¹ Sagittarii

Blue Theta¹ Sagittarii is one of two stars in Sagittarius bearing the 'Theta' designation, though these two stars are unrelated except that they lie relatively close to one another in the sky. The other 'Theta' star, the rather fainter Theta² Sagittarii, is thirty-four arcminutes to the north from Theta¹, and can been seen on this image by zooming out slightly. Imagery provided by Aladin sky atlas