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Deneb (/ ˈ d ɛ n ɛ b /) 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.
There are several bright stars in Cygnus. α Cygni, called Deneb, is the brightest star in Cygnus. It is a white supergiant star of spectral type A2Iae that varies between magnitudes 1.21 and 1.29, [17] one of the largest and most luminous A-class stars known. [18] It is located about 2600 light-years away. [19]
This is the list of notable stars in the constellation of Cygnus, sorted by decreasing apparent magnitude. Name B F Var HD HIP RA Dec vis. mag. abs. mag. Dist. Sp. class
Albireo is the star in the head of the constellation of Cygnus (bottom). β Cygni (Latinised to Beta Cygni) is the system's Bayer designation. The brighter of the two components is designated β¹ Cygni or Beta Cygni A and the fainter β² Cygni or Beta Cygni B. The origin of the star system's traditional name Albireo is unclear.
HD 185351 is a star in the constellation of Cygnus, the swan.With an apparent visual magnitude of 5.17, [1] it is faintly visible to the naked eye on a dark night. Based on parallax measurements, HD 185351 is located at a distance of 134 light years from the Sun. [2]
Delta Cygni (δ Cygni, abbreviated Delta Cyg, δ Cyg) is a binary star of a combined third-magnitude in the constellation of Cygnus.It is also part of the Northern Cross asterism whose brightest star is Deneb.
The North America Nebula (NGC 7000 or Caldwell 20) is an emission nebula in the constellation Cygnus, close to Deneb (the tail of the swan and its brightest star). It is named because its shape resembles North America.
16 Cygni or 16 Cyg is a triple star system approximately 69 light-years away from Earth in the constellation of Cygnus. It consists of two Sun-like yellow dwarf stars, 16 Cygni A and 16 Cygni B, together with a red dwarf, 16 Cygni C. In 1996 an extrasolar planet was discovered in an eccentric orbit around 16 Cygni B.