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Deneb (/ ˈdɛnɛb /) is a first-magnitude blue supergiant star in the constellation of Cygnus. Deneb is one of the vertices of the asterism known as the Summer Triangle and the "head" of the Northern Cross. It is the brightest star in Cygnus and the 19th brightest star in the night sky, with an average apparent magnitude of +1.25.
List of stars in Cygnus. This is the list of notable stars in the constellation of Cygnus, sorted by decreasing apparent magnitude.
25 gru 2023 · The blue-white supergiant is the most luminous first magnitude star, with an estimated luminosity of up to 196,000 times that of the Sun and an absolute magnitude of -8.38. If it were placed at Vega ‘s distance, Deneb would be bright enough to cast shadows on Earth.
15 cze 2014 · Deneb, Alpha Cygni, is the brightest star in Cygnus constellation and the most distant of all first magnitude stars. It is a luminous blue supergiant. It is one of the stars that form the Summer Triangle, along with Altair in Aquila constellation and Vega in Lyra.
30 sty 2020 · Deneb is the brightest star in the constellation of Cygnus – the Swan. It is a first magnitude star and it is one of the vertices of the asterism known as the Summer Triangle and the “Head” of the Northern Cross. Key Facts & Summary
The Deneb Star is an extremely luminous and massive star and the brightest star in the Constellation Cygnus. Rigel (Beta Orionis), is the most luminous first magnitude star overall, with a highly luminous apparent magnitude of 0.120.
25 lip 2011 · With a visual magnitude of 1.3, it barely qualifies as a 1st-magnitude star. Deneb may appear rather ordinary in comparison to Altair and Vega, but looks can be deceiving.
