Capricornus's brighter stars are found on a triangle whose vertices are α2 Capricorni(Giedi),
δ Capricorni(Deneb Algiedi), and ω Capricorni.
Deneb is 1500 light years away,
but because it is one of the brightest stars in the Milky Way- with 200,000 times as bright light as that of our sun- it is clearly in the sky.
About the Summer Triangle In the summer months, three of the brightest stars in the sky- Wega,
Altair and Deneb- can be seen high
in the sky in a clear triangle, which is also called the summer triangle.