Deneb (α Cyg / α Cygni / Alpha Cygni) is the brightest star in the constellation Cygnus and one of the brightest stars in the night sky, with apparent magnitude 1.25. Deneb is also one of the most luminous stars known.
Deneb
Related Category: Astronomy: Stars
(dn´b), brightest star in the constellation Cygnus; Bayer designation Alpha Cygni; 1992 position R.A. 20h41.2m, Dec. +45°15&minut;.
DENEB ALGEDI (Delta Capricorni). As the Sun leaves the winter solstice and Sagittarius behind, it moves into its next zodiacal station, Capricornus, the "water goat, and in early February crosses between the figure's head and tail, ...
Deneb is the 18th brightest star in the sky. Take a look at the list of the Brightest Stars
Vega, along with Deneb and Altair form the well-known Summer Triangle.
More Deneb information ...
Deneb is a white A2Ia supergiant star. Assuming a distance of 1600 ly, Burnham estimates the luminosity of Deneb to be 60,000 times that of the sun. At 3200 ly, the luminosity would be nearer to 250,000 times that of the sun.
Deneb
(a) The brightest star in the constellation Cygnus, Deneb is a white A-type supergiant that generates more light in a single night than the Sun produces during an entire century.
DENEB
Deneb (which means "tail" in Arabic) is the brightest star in the constellation (the swan); Deneb is also referred to as alpha Cygni, and is the tail of the swan. This young, bright, blue supergiant star is about 1,500 light years away.
Deneb es una brillante estrella supergigante, azul, y muy joven para ser estrella. Albireo, el hocico del cisne, es en realidad dos estrellas que muestran un contraste ambarino y azul espectacular.
Deneb Kaitos; Difda; Difda al Thani; Rana Secunda, the "Second Frog" (the "First Frog" is Fomalhaut = HR 8728).
Beta Ceti
HR 188
HD 4128 ...
DENEB
Deneb (which means "tail" in Arabic) is the brightest star in the called (the swan); Deneb is also referred to as alpha Cygni, and is the tail of the swan. This young, bright, blue supergiant star is about 1,500 light years away.
Deneb Algiedi (Delta Capricorni; possibly aka Deneb)
Carina (Carinae)
Canopus (Alpha Carinae)
Carinae Delta (there is no "Delta" star in the modern Carina constellations)
Cassiopeia (Cassiopeiae) Centaurus (Centauri) ...
so Deneb would have an apparent magnitude of -1.89. This would make it brighter in our night sky than Sirius (m = -1.44). In reality Deneb is about 990 pc distant although this value has a large uncertainty.
see Deneb. [H76]
P Cygni Star
A type of star named after the fifth-magnitude B 1e star P Cygni, about 1200 pc distant, whose spectrum shows strong emission lines, like those of the Be and Wolf-Rayet stars, ...
From Denebola (beta Leonis) draw a line to the bright star to the southeast, Arcturus (alpha Bootis). Alpha Comae is found on this line at about the midpoint.
Diphda (Deneb Kaitos)
Beta Ceti
Arabic: "second frog" (Arabic/Greek: "tail of the sea monster") ...
Polaris
Deneb
Antares
Spica
8. An astronomer announces a newly discovered star is moving away from us at 100 km/sec. How is this deterimined?
This chart shows the distribution of bright galaxies in the core on Virgo Galaxy Cluster between e Virginis (Vindemiatrix) and b Leonis (Denebola).
Although Rigel and Deneb have the same real brightness (the same absolute magnitude), Rigel appears brighter than Deneb on the sky (it has a smaller apparent magnitude) because it is much closer to the Earth.
Examples are Cygni (Deneb), Orionis (Rigel), and Ursae Majoris (Alkaid). See navigational stars, table.
At the tip of the lion's tail the beautiful blue-white main sequence star beta Leo, Denebola is located. Viewed through a telescope beta Leo seems to have an orange companion. But actually the two stars are far away from each other.
[4807] beta Leonis, also known as Denebola ("the tail of the lion"), is the second brightest star in the constellation. It is an an A-class star and a Delta Scuti type variable, with slight variations in brightness every few hours.
It is located in the northeastern corner (11:42:11.1+26:42:23.7, ICRS 2000.0) of Constellation Leo, the Lion -- northeast of Zosma (Delta Leonis) and Coxa (Theta Leonis), north of Denebola (Beta Leonis), ...
As another example, the brightest star in the constellation Cygnus (the Swan) is situated near the aft portion of the beast and is called Deneb, which is also Arabic in origin and means "the tail of the hen".
The Bayer Naming System ...
The brightest stars"Vega, Deneb, and Altair"form a conspicuous triangle high above the constellations Sagittarius and Capricornus, which are low on the southern horizon. In the winter sky, however, these stars are replaced, as shown in Figure 1.
Examples: Vega, Sirius, Deneb
Class F
Class F stars are still quite powerful but they tend to be main sequence stars. These stars have strengthening H and K lines of Ca II.
Cygnus's brightest star, Deneb, marks the tail of the swan; its name comes from dhanab, the Arabic word for ‘tail'. The Greeks had no name for this prominent star.
October Star of the Month: Deneb
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Hector Hugh Munro claimed, "A little inaccuracy sometimes saves a ton of explanation." No wonder it's said that the Moon keeps one face toward Earth, and that we see only 50% of the lunar surface.
Examples: Vega, Sirius, Deneb
[edit] Class F
Class F stars have strengthening H and K lines of Ca II. Neutral metals (Fe I, Cr I) beginning to gain on ionized metal lines by late F.
Cygnus, with the bright star Deneb in the swan's tail, appears high in the summer sky. The three bright stars Deneb, Vega (in the constellation of Lyra), and Altair (in the constellation of Aquila) mark the Summer Triangle.
European researcher Michael Rappenglueck, however, suggests that it is a map of three particular stars — Vega, Deneb, Altair — that astronomers today refer to the Summer Triangle.
Altair (α Aql), Alshain (β Aql), Anser (α Vul), Deneb Dulfim (ε Del), Deneb el Okab (ε Aql), Deneb el Okab (ζ Aql), Kitalpha (α Equ), Rotanev (β Del), Sham (α Sge), Sualocin (α Del).
These are Altair, Deneb, and Vega. These form a bright triangle, with the Southernmost star (farthest from the other two) being Altair, the brightest one (to the West) being Vega, and the one to the East being Deneb.
Some people have an easier time seeing Cygnus' stars as the Northern Cross, Deneb being the top of the Cross and Albireo, the bottom. The Cross, however, appears sideways at early evening.
" Locate the center of the cross, and go from there to the top of the cross--the brightest star in Cygnus, known as Deneb.
Named Stars: ALTAIR (Alpha Aql) ALSHAIN (Beta Aql) TARAZED (Gamma Aql) Deneb el Okab (Epsilon Aql) Deneb el Okab (Zeta Aql)
Altair is a bright star of magnitude 0.8.
Aquila has many clusters and nebulae to view.
Ancient Hindus saw it as a triangle, or as the three-cornered nut of the aquatic plant Cringata. Vega, along with Deneb Adige in the Swan, and Altair in the Eagle, forms the Great Summer Triangle.
Named stars: Alpha Leo (Regulus), Beta Leo (Denebola), Gamma Leo (Algieba), Delta Leo (Duhr), Epsilon Leo (Ras Elased Australis), Zeta Leo (Aldhafera), Mu Leo (Ras Elased Borealis), Omicron Leo (Subra) ...
A-type supergiants, such as Deneb, may be as hot as 11,000 K and have masses up to 16 Msun and luminosities of up to 35,000 Lsun.
Vega (A0), Sirius (A1), Deneb
F
H lines moderate, neutral and singly ionized metal lines
K = 6,000-7,500; M = 1.1-1.6; R = 1.2-1.6; L = 2.0-6.5; T = 3-7 Ga ...
The north pole of rotation of the planet is at present pointed in the direction of a sixth-magnitude star, BD 52 2880, located near the bright star Deneb in the constellation of Cygnus.
Some Perseids can be as bright as the brightest stars, such as Vega (magnitude 0) or Deneb (magnitude +1.26) in Vega and Cygnus respectively, ...
Cepheus lies in between the constellation Cassiopeia, the star Deneb in the constellation Cygnus, and the star Polaris (the North Star). When you look at Cepheus in the sky, it's about as big as your fist held at arm's length.
SUMMER TRIANGLE
The Summer Triangle is a group of three bright stars (Deneb, Vega, and Altair) which are visible during the summer in the Northern Hemisphere. The Summer Triangle is not a constellation, but an asterism.
...
It is far and away the most luminous star in the local region of space Milky Way; the nearest more powerful star is Deneb, as much as 3300 light years (1000 parsecs) down the Orion Arm of the Milky Way galaxy.
Deneb, Alberio, Aldebaran, Rigel to name a few). For more about this, see the database of Islam and astronomy (will display in another window).
Orion is called Betelgeuse, which comes from Arabic and roughly translated means 'the armpit of the mighty one'; the brightest star in the constellation Cygnus (the Swan) is situated near the rear portion of the beast and is called Deneb, ...
It is an Stellar classification#Class A main sequence star with an apparent visual magnitude of 0.77 and is one of the vertices of the Summer Triangle; the other two are Deneb and Vega....
(the male cow-herd deity) in the constellation ...
The brightest star, Altair, forms the southern point of the Summer Triangle, three notably bright stars, highly visible shortly after sunset in the south in summer (now there's alliteration for you). The other two points in the triangle being Deneb ...
A perfect example is the Milky Way area between Deneb and Albireo in Cygnus where several dozen stars are visible within a small telescopic field of view.
 See also: Star, Sky, Constellation, Sun, Light
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