"WR 140 WR 140 is a visually moderately bright Wolf-Rayet star placed within the spectroscopic binary star, SBC9 1232, whose primary star is an evolved spectral class O4-5 star. It is located in the constellation of Cygnus, lying in the sky at the centre of the triangle formed by Deneb, γ Cygni and δ Cygni. WR 140 has been described as the brightest Wolf Rayet star in the northern hemisphere, although WR 133 also in Cygnus is comparably bright. The Wolf-Rayet component is identified as the secondary star, being less massive, less luminous, and probably less visually bright than its"
"is now so entered in the IAU Catalog of Star Names. Deneb lies at one vertex of a widely spaced asterism called the Summer Triangle, the other two members of which are the zero-magnitude stars Vega in the constellation Lyra and Altair in Aquila. This formation is the approximate shape of a right triangle, with Deneb located at one of the acute angles. The Summer Triangle is recognizable in the northern skies for there are few other bright stars in its vicinity. Deneb is also easily spotted as the tip of the Northern Cross asterism made up of the brightest"
"Deneb appears to have a diameter of about over 200 times that of the Sun; if placed at the center of the Solar System, Deneb would extend out to the orbit of the Earth. It is one of the largest known white stars. Deneb is a bluish-white star of spectral type A2Ia, with a surface temperature of 8,500 kelvin. Since 1943, its spectrum has served as one of the stable references by which other stars are classified. It is the prototype of a class of variable stars known as Alpha Cygni variables. Its surface undergoes non-radial fluctuations which cause its"
"notably Deneb Kaitos, the brightest star in the constellation of Cetus; Deneb Algedi, the brightest star in Capricornus; and Denebola, the second brightest star in Leo. All these stars are referring to the tail of the animals that their respective constellations represent. ""Denebadigege"" was used in the ""Alfonsine Tables"", other variants include ""Deneb Adige"", ""Denebedigege"" and ""Arided"". This latter name was derived from ""Al Ridhādh"", a name for the constellation. Johann Bayer called it ""Arrioph"", derived from ""Aridf"" and ""Al Ridf"", 'the hindmost' or ""Gallina"". German poet and author Philippus Caesius termed it ""Os rosae"", or ""Rosemund"" in German, or"
"story Deneb is a fairy who acts as chaperone when the lovers meet. The north pole of Mars points to the midpoint of the line connecting Deneb and the star Alderamin. USS ""Arided"" was a United States Navy ""Crater""-class cargo ship named after the star. The SS Deneb was an Italian merchant vessel that bore this name from 1951 until she was scrapped in 1966. The star Deneb, and hypothetical planets orbiting it, have been used many times in literature, film, electronic games, and music. Examples include several episodes of the ""Star Trek"" TV series, the ""Silver Surfer"" comic book,"
"the stable anchor points by which all other stars' spectra would be classified. There followed a hiatus of 30 years, until a cluster of works representing renewed interest in the star appeared around the year 1990. The items in this subsection all refer to works in the film, television, and print franchise originated by Gene Roddenberry. Deneb is referred to as a location in space or the center of a planetary system unusually often in fiction. For a list containing many stars and planetary systems that have a less extensive list of references, see Stars and planetary systems in fiction."
"luminous as the Sun, rivalling Rigel as the most inherently luminous star of first magnitude. ""α Cygni"" (Latinised to ""Alpha Cygni"") is the star's Bayer designation. The traditional name ""Deneb"" is derived from the Arabic word for ""tail"", from the phrase ذنب الدجاجة ""Dhanab al-Dajājah"", or ""tail of the hen"". In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN) to catalog and standardize proper names for stars. The WGSN's first bulletin of July 2016 included a table of the first two batches of names approved by the WGSN; which included ""Deneb"" for this star. It"
"Eta Ceti Eta Ceti (η Cet, η Ceti) is a star in the equatorial constellation of Cetus. It has the traditional name Deneb Algenubi or Algenudi. The apparent visual magnitude of this star is +3.4, making it the fourth-brightest star in this otherwise relatively faint constellation. The distance to this star can be measured directly using the parallax technique, yielding a value of . This is a giant star with a stellar classification of K1 III, having exhausted the hydrogen at its core and evolved away from the main sequence of stars like the Sun. (The classification is sometimes listed"
"Sea or the Water, consisting of many water-related constellations such as Aquarius, Pisces and Eridanus. It is the smallest constellation in the zodiac. Capricornus is a faint constellation, with only one star above magnitude 3; its alpha star has a magnitude of only 3.6. The brightest star in Capricornus is δ Capricorni, also called Deneb Algedi, with a magnitude of 2.9, 39 light-years from Earth. Like several other stars such as Denebola and Deneb, it is named for the Arabic word for ""tail"" (""deneb""); its traditional name means ""the tail of the goat"". Deneb Algedi is a Beta Lyrae variable"
"8106, HD 201834, or SAO 33185), which in turn is at R.A. Decl. . The top two stars in the Northern Cross, Sadr and Deneb, point to the north celestial pole of Mars. The pole is about halfway between Deneb and Alpha Cephei, less than 10° from the former, a bit more than the apparent distance between Sadr and Deneb. Because of its proximity to the pole, Deneb never sets in nearly all of Mars's northern hemisphere. Except in areas close to the equator, Deneb permanently circles the North pole. The orientation of Deneb and Sadr would make a useful"
"More detailed analysis of the spectrum over time has not found any support for a companion. Deneb spent much of its early life as a O-type main-sequence star but it has now exhausted the supply of hydrogen in its core and begun to cool and expand. Stars in the mass range of Deneb eventually expand to become the most luminous red supergiants, and within a few million years their cores will collapse producing a supernova explosion. It is now known that red supergiants up to a certain mass explode as the commonly seen type II-P supernovae, but more massive ones"
"questions, although it will not measure Deneb itself. Deneb's absolute magnitude is currently estimated as −8.4, placing it among the most luminous stars known, with an estimated luminosity nearly 200,000 times that of the Sun. This is towards the upper end of various published values over the last few decades. Deneb is the most luminous of the stars with apparent magnitude brighter than 1.5, and the most distant, by a factor of almost 2, of the 30 brightest stars. Based on its temperature and luminosity, and also on direct measurements of its tiny angular diameter (a mere 0.002-second of arc),"
"Denebola Denebola, also designated Beta Leonis (β Leonis, abbreviated Beta Leo, β Leo) is the second-brightest star in the zodiac constellation of Leo, although the two components of the γ Leonis double star, which are unresolved to the naked eye, have a combined magnitude brighter than it. Denebola is an A-type main sequence star with 75% more mass than the Sun and 15 times the Sun's luminosity. Based on parallax measurements from the Hipparcos astrometry satellite, the star is at a distance of about from the Sun. Its apparent visual magnitude is 2.14, making it readily visible to the naked"
"Alpha Leporis Alpha Leporis (α Leporis, abbreviated Alpha Lep, α Lep), also named Arneb, is the brightest star in the constellation of Lepus. ""Alpha Leporis"" is the star's Bayer designation. The traditional name ""Arneb"" comes from the Arabic ""أرنب"" ""’arnab"" 'hare' ('Lepus' is Latin for hare). In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN) to catalog and standardize proper names for stars. The WGSN's first bulletin of July 2016 included a table of the first two batches of names approved by the WGSN; which included ""Arneb"" for this star. In Chinese, (), meaning ""Toilet"","
"Deneb in fiction The planetary systems of stars other than the Sun and the Solar System are a staple element in much science fiction. Deneb may be referred to in fictional works for its metaphorical (or mythological associations, or else as a bright point of light in the sky of the Earth, but not as a location in space or the center of a planetary system: In the listing below, the majority of literary references to Deneb occurred in the score of years after 1943, the star's banner year as a ""cynosure"" when its spectrum was selected as one of"
"Deneb in fiction The planetary systems of stars other than the Sun and the Solar System are a staple element in much science fiction. Deneb may be referred to in fictional works for its metaphorical (or mythological associations, or else as a bright point of light in the sky of the Earth, but not as a location in space or the center of a planetary system: In the listing below, the majority of literary references to Deneb occurred in the score of years after 1943, the star's banner year as a ""cynosure"" when its spectrum was selected as one of"
"that has not yet grown hot enough to start fusion to carbon and oxygen. Convection has begun to dredge up the products of fusion but these are not visible at the surface. Post-red supergiant stars are expected to show those fusion products at the surface due to stronger convection during the red supergiant phase and due to loss of the obscuring outer layers of the star. Deneb is thought to be evolving redwards, although current models do not exactly reproduce the surface elements showing in its spectrum. Names similar to Deneb were given to at least seven different stars, most"
"Northern Cross (asterism) The Northern Cross is a prominent astronomical asterism in the northern hemisphere celestial sphere, corresponding closely with the constellation Cygnus The Swan. It is much larger than the more famous Southern Cross and consists of the brightest stars in Cygnus, Deneb, Sadr, Gienah, Delta Cygni and Albireo. The 'head' of the cross, Deneb, is also part of the Summer Triangle asterism. Like the Summer Triangle, the Northern Cross is a prominent indicator of the seasons. Near midnight, the Cross lies virtually overhead at mid-northern latitudes during the summer months; it can also be seen during spring in"
"was often recognized as a separate constellation. In Tonga it was called ""Tuula-lupe"", and in the Tuamotus it was called ""Fanui-tai"". Deneb was also often given a name. The name ""Deneb"" comes from the Arabic name ""dhaneb"", meaning ""tail"", from the phrase ""Dhanab ad-Dajājah"", which means “the tail of the hen”. In New Zealand it was called ""Mara-tea"", in the Society Islands it was called ""Pirae-tea"" or ""Taurua-i-te-haapa-raa-manu"", and in the Tuamotus it was called ""Fanui-raro"". Beta Cygni was named in New Zealand; it was likely called ""Whetu-kaupo"". Gamma Cygni was called ""Fanui-runga"" in the Tuamotus. A very large constellation,"
"identified. In astrology, Denebola was believed to portend misfortune and disgrace. Denebola Denebola, also designated Beta Leonis (β Leonis, abbreviated Beta Leo, β Leo) is the second-brightest star in the zodiac constellation of Leo, although the two components of the γ Leonis double star, which are unresolved to the naked eye, have a combined magnitude brighter than it. Denebola is an A-type main sequence star with 75% more mass than the Sun and 15 times the Sun's luminosity. Based on parallax measurements from the Hipparcos astrometry satellite, the star is at a distance of about from the Sun. Its apparent"
"to end its life in a spectacular stellar explosion known as a supernova. However, this is not expected to happen for another million years. USS Arneb (AKA-56) was a ship of the United States navy. \end{align}</math></ref> Alpha Leporis Alpha Leporis (α Leporis, abbreviated Alpha Lep, α Lep), also named Arneb, is the brightest star in the constellation of Lepus. ""Alpha Leporis"" is the star's Bayer designation. The traditional name ""Arneb"" comes from the Arabic ""أرنب"" ""’arnab"" 'hare' ('Lepus' is Latin for hare). In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN) to catalog and standardize"
"as K1.5 IIICN1Fe0.5, indicating a higher than normal abundance of cyanogen and iron relative to other stars of its class.) It is a red clump star that is generating energy through the nuclear fusion of helium at its core. Eta Ceti may have slightly more mass than the Sun and its outer envelope has expanded to 15 times the Sun's radius. It is radiating 74 times as much luminosity as the Sun from its outer atmosphere at an effective temperature of 4,356 K. This heat gives the star the orange-hued glow of a K-type star. The name ""Deneb Algenubi"" was"
"DENIS-P J020529.0-115925 DENIS-P J020529.0-115925 is a star system in the constellation of Cetus. It is located 64 light-years (19.8 parsecs) away, based on the system's parallax. It was first found in the Deep Near Infrared Survey of the Southern Sky. This is a triple star system containing three brown dwarfs: objects that do not have enough mass to fuse hydrogen like stars. The two brightest components, designated A and B respectively, are both L-type objects. As of 2003, the two were separated 0.287° along a position angle of 246°. Component B was observed to elongated, suggesting a third component. This"
"apparent magnitude of 19.7 despite a distance of more than 14 million light-years, which corresponds to an absolute magnitude of -8.7, it is most likely a large type B or type O supergiant star. A 2003 study that performed a detailed spectral analysis of the optical source determined that its surface temperature is most likely less than 25,000 K. If accurate, this would suggest that the counterpart is a type B0 supergiant with a mass of about and a radius of about , similar to Deneb. Both the X-ray source and the optical counterpart are located near the center of"
"lose their outer layers to become hotter again. Depending on their initial masses and the rate of mass loss, they may explode as yellow hypergiants or luminous blue variables, or they may become Wolf-Rayet stars before exploding in a type Ib or Ic supernova. Identifying whether Deneb is currently evolving towards a red supergiant or is currently evolving bluewards again would place valuable constraints on the classes of stars that explode as red supergiants and those that explode as hotter stars. Stars evolving redwards for the first time are most likely fusing hydrogen in a shell around a helium core"
"brightness to vary by up to 0.15 magnitude with no clear periodicity, and the spectral type to change slightly. Deneb's mass is estimated at 19 solar masses (). Its stellar wind causes it to lose mass at a rate of per year, one hundred thousand times the flow rate from the Sun, i.e. roughly one Earth mass lost per 500 years. Deneb has been reported as a possible single line spectroscopic binary, where the spectral lines from the star suggest radial velocity changes (in a cyclical or more complex periodic fashion), but no spectral features from a companion are seen."
"are parts of the same interstellar cloud of ionized hydrogen (H II region). Between the Earth and the nebula complex lies a band of interstellar dust that absorbs the light of stars and nebulae behind it, and thereby determines the shape as we see it. The distance of the nebula complex is not precisely known, nor is the star responsible for ionizing the hydrogen so that it emits light. If the star inducing the ionization is Deneb, as some sources say, the nebula complex would be about 1,800 light-years' distance, and its absolute size (6° apparent diameter on the sky)"
"DENIS-P J082303.1-491201 b DENIS-P J082303.1-491201 b (alias 2MASS J08230313-4912012 b) is a substellar object, classified as either an exoplanet or a brown dwarf, orbiting DENIS-P J082303.1-491201, an L1.5-type brown dwarf in the constellation Vela. was discovered by Sahlmann et al. (2013) using the ESO telescopes at the La Silla Paranal Observatory. It is part of an ultracool binary system. is located from Earth. At , it is listed as the second most massive planet in the NASA Exoplanet Archive. orbits the nearby L1.5-type brown dwarf , which is % the mass of our Sun, and has an orbital period of"
"third component, named C, is a T-type object. It is separated about 1.9 astronomical units (au) from B, and based on a total mass of , the two may orbit each other every 8 years. DENIS-P J020529.0-115925 DENIS-P J020529.0-115925 is a star system in the constellation of Cetus. It is located 64 light-years (19.8 parsecs) away, based on the system's parallax. It was first found in the Deep Near Infrared Survey of the Southern Sky. This is a triple star system containing three brown dwarfs: objects that do not have enough mass to fuse hydrogen like stars. The two brightest"
"Astronomical Union organized a Working Group on Star Names (WGSN) to catalogue and standardize proper names for stars. The WGSN approved the name ""Diphda"" for this star on 21 August 2016 and it is now so entered in the IAU Catalog of Star Names. In Chinese astronomy, Deneb Kaitos is called 土司空, Pinyin: ""Tǔsīkōng"", meaning Master of Constructions, because this star is marking itself and stands alone in the Master of Constructions asterism, Legs mansion (see : Chinese constellation). 土司空 (Tǔsīkōng), westernized into ""Too Sze Kung"" by R.H. Allen and the meaning is ""Superintendent of Earthworks."" USS ""Diphda"" (AKA-59) was"
"Delta Corvi Delta Corvi (δ Corvi, abbreviated Delta Crv, δ Crv), also named Algorab, is a third magnitude star at a distance of from the Sun in the southern constellation of Corvus. ""δ Corvi"" (Latinised to ""Delta Corvi"") is the star's Bayer designation. It bore the traditional name ""Algorab"" derived from Arabic ""الغراب"" ""al-ghuraab"", meaning 'the crow'). In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN) to catalog and standardize proper names for stars. The WGSN's first bulletin of July 2016 included a table of the first two batches of names approved by the WGSN;"
"Beta Delphini Beta Delphini (β Delphini, abbreviated Beta Del, β Del) is a binary star in the constellation of Delphinus. It is the brightest star in Delphinus. The two components are designated Beta Delphini A (also named Rotanev) and B. ""β Delphini"" (Latinised to ""Beta Delphini"") is the binary's Bayer designation. The designations of the two components as ""Beta Delphini A"" and ""B"" derive from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU). Beta Delpini bore an historical name, ""Rotanev"", which arose as follows: Niccolò Cacciatore was"
"from Earth. At magnitude 4.4, Beta Leonis Minoris is the second-brightest star and the only one in the constellation with a Bayer designation. It is a binary star, the brighter component of which is an orange giant and the fainter a yellow-white main sequence star. The third-brightest star is 21 Leonis Minoris, a rapidly rotating white main-sequence star of average magnitude 4.5. The constellation also includes two stars with planetary systems, two pairs of interacting galaxies, and the unique deep-sky object Hanny's Voorwerp. The classical astronomers Aratus and Ptolemy had noted the region of what is now Leo Minor to"