Deneb

File:Cygnus constellation map.svg

Cygnus, the constellation where Deneb is found.

Deneb (also named Arided, α Cygni, alpha Cygni, α Cyg) is the brightest star in the constellation of Cygnus. It, along with Vega, and Altair make up the Summer Triangle asterism.

It has an apparent magnitude of 1.25, which means that it is the 20th brightest star in the night sky. However its distance from the sun and luminosity are difficult to calculate, but its distance is estimated to be approximately 2,600 light years away. It is thought to be between 55,000 and 196,000 times as luminous as the Sun.

Deneb is a blue supergiant that is 203 times larger than the Sun.

Deneb will be the Pole Star in the year 9800 AD.

Deneb Media

• CygnusCC.jpg

  Deneb is the brighest star in the constellation of Cygnus (top)

• Summer triangle.png

  Diagram showing the summer triangle, a triangluar configuration of the stars Vega (α Lyrae), Altair (α Aquilae), et Deneb (α Cygni). Made by taking a screen snapshot of KStars, adding the lines in the triangle with OpenOffice sdraw, and cropping with the GIMP.

• Wide-field view of the Summer Triangle and the Milky Way. Deneb is at the far left centre of the picture, at the end of the darker lane within the Milky Way.

• A visual band light curve for Deneb, adapted from Yüce and Adelman (2019)