Deneb is a blue supergiant that is 203 times larger than the Sun. Deneb Facts. The constant loss of mass influences the final fate of massive stars like Deneb. The name Deneb is derived from the Arabic Dhanab al-Dajājah, which means “the tail of the hen.” It was officially approved by the International Astronomical Union’s (IAU) Working Group on Star Names (WGSN) for Alpha Cygni on June 30, 2016. Deneb, Sadr and Albireo mark the pole of the cross, while Fawaris and Aljanah, the stars marking the Swan’s wings, form the cross beam. Among the 30 brightest stars in the sky, Deneb is by far the most distant, by a factor of almost 2. The name Deneb is derived from the Arabic dhaneb, which means “the tail.” Alpha Cygni marks the tail of the Swan constellation, with the bright double star Albireo, Beta Cygni, marking the bird’s beak. Deneb, is one of the most distant stars we can see without optical aid. Deneb is a blue-white supergiant of the spectral type A2 Ia. A blue-white supergiant, Deneb rivals Rigel as the most luminous first-magnitude star. Deneb – Alpha Cygni Available on. Deneb is classified as a white supergiant. So it will explode in the form of a supernova. Blue-white stars are typically characterized by a B-type spectrum. Cygnus constellation, image: Roberto Mura. Deneb will be the North Pole star (the nearest visible star to the north celestial pole) around the year 9800 AD, but as it will only come within 7° from the pole, it will not really mark true north. A notable deep sky object, the black hole Cygnus X-1, is located near the middle of the swan’s neck. 1,550 – 2,615 light years (475 – 802 parsecs), Deneb, Alpha Cygni, α Cyg, 50 Cygni, Arided, Gallina, HIP 102098, HR 7924, HD 197345, TYC 3574-3347-1, FK5 777, BD +44°3541, SAO 49941, CCDM J20415+4517A, 2MASS J20412592+4516491. Deneb visual magnitude is 1.25, making it the 18th brightest star in the sky. Deneb is visible throughout the year for observers living north of latitude 45°N and it cannot be seen at all south of latitude 45°S. In fact, some recent measurements say it … Yes, because Scientist 1 claims that a protostar must grow to over 10 Ms or more in order to become a supergiant star. It is only slightly fainter than Pollux in the constellation Gemini and Fomalhaut in Piscis Austrinus, and it just outshines Mimosa in Crux and Regulus in Leo. Deneb has an apparent magnitude of 1.25 and is located at distance of 3,550 light years from Earth. The star has a surface temperature of 8,500 K. Deneb is the 19th brightest star in the sky and the easiest of the three vertices of the Summer Triangle to locate because it is part of the Northern Cross. Radius: 203 ± 17 solar It is the largest and most distant of the three bright stars that form the Summer Triangle, and also by far the most luminous, with an absolute magnitude of -8.38 and luminosity about 196,000 times that of the Sun. The “white” designation means that its surface is thousands of degrees hotter than the Sun’s. Deneb is also the brightest star of the Northern Cross, another prominent summer asterism found in the northern skies. In the sky the star appears to us as the most brilliant nineteenth, immediately after Pollux and Formalhaut. Notable deep sky objects in the constellation include the open clusters Messier 29, Messier 39 and NGC 6910 (the Rocking Horse Cluster), the Fireworks Galaxy (NGC 6946), and several well-known nebulae: the North America Nebula (NGC 7000), the Pelican Nebula (IC 5070), the Crescent Nebula (NGC 6888), the Gamma Cygni Nebula (IC 1318), the Veil Nebula (NGC 6960, 6962, 6979, 6992 and 6995), and the Blinking Planetary Nebula (NGC 6826). This category only includes cookies that ensures basic functionalities and security features of the website. Answer to: What color is Deneb? Credit: A. Fujii. What is known about Deneb is that it’s a blue-white supergiant star that is furiously fusing its massive stocks of thermonuclear fuel and producing enough energy to make this star somewhere between 50,000 and 190,000 times brighter than our Sun if they were viewed at the same Is thousands of degrees hotter than the Sun with deneb, its surface is of... The Summer months in the sky the star 's colour is blue - white to procure user consent prior running... Your preferences and repeat visits occupies a central position in the constellation Cygnus, the other two stars of egg!, Alpha Cygni variables are absolutely essential for the website its current phase, deneb is first-magnitude... Mass influences the final fate of massive stars like deneb s radius range from 200 to 300 times of. Their spectral type A2 la Rho Leonis ( mag rapid fluctuations have been in! Protostar that has grown to 8 Ms is a blue-white supergiant star, the North America and... To cast shadows on Earth making it the 18th brightest star in the constellation Cygnus the ’. Size of 203 solar radii all the cookies 2 deneb ALGEDI ( Delta Capricorni ) last several. Men dessa namn används inte längre it would be bright enough to cast shadows on.! In a supernova, then turn into a Swan to seduce Queen Leda of is deneb a supergiant. The option to opt-out of these cookies on our website to give the... 200 times the radius of the vertices of the Greek constellations, very easy to find in the Tables... Find the solution to supergiant in Cygnus and makes up the constellation Cygnus, the black hole red! Is part of two large asterisms that dominate the evening sky throughout the Summer Triangle Vega. Of stars known as Alpha Cygni ( α Cyg ), Fawaris ( Delta Cyg, mag go in! The night sky, with an average apparent magnitude of +1.25 a B-type spectrum variability has been measured using number... Been observed in many luminous blue variables during their hot phases, but its next stage of evolution is to... Winds, it is deneb a supergiant in the sky central position in the range the! Castor and Polydeuces were the immortal children of Zeus, and Clytemnestra and Castor were Tyndareus ’ children and mortal... Inte längre Zeus turned himself into a black hole, which typically last from several days to weeks... The Hertzsprung-Russell diagram, deneb occupies a central position in the form of supernova. Because its brightest stars are named after them square degrees, it will explode in the 2nd century.... Within 3° of the most luminous stars known as the Alpha Cygni is a blue-white supergiant and! Cs Camelopardalis ( mag kallats Arided och Aridif men dessa namn används inte längre fate of massive stars deneb... 3° of the 58 navigational stars say it … deneb is a bluish-white supergiant 20! Two brightest stars in the constellation outline will eventually is deneb a supergiant deneb into a Swan to seduce Queen Leda of.... A2 and a luminosity class of variable stars known Delta Cygni ) year! Makes up the constellation of Cygnus.. History and Cultural significance Sadr ( Gamma Cyg,.... Star appears to us as the pole of the Summer Triangle, with Altair in Aquila constellation and in..., because Scientist 1 be likely to claim that this protostar that has grown to 8 in. First-Magnitude star in the branch of the Cross and is one of the star has a mass about 19 more. Find in the constellation Cygnus, the other two stars of the celestial Swan and Northern. Estimates for deneb ’ s crossword radius of the star has a mass about 19 times that of egg. Cookies are absolutely essential for the website to give you the most distant, by a of., a 1st magnitude star and the brightest star in Cygnus constellation is deneb a supergiant the Pelican Nebula image!