Denebola is also known as Beta Leonis, HR 4534, Gl 448, and HD 102647. [19] The dust surrounding Denebola has a temperature of about 120 K (−153 °C). It is also formed by the bright Arcturus in the constellation Boötes, Spica in Virgo, and Cor Caroli in Canes Venatici. The main component in this subsystem is a K2V-type star, with the companion being approximately a M4V-type star. Other “tail” stars are Deneb (Alpha Cygni), marking the tail of the Swan (Cygnus), Deneb Algedi (Delta Capricorni), the tail of the Goat (Capricornus), and Aldhanab (Gamma Gruis), originally marking the tail of the Southern Fish, but now representing the eye of the Crane (Grus). The Spring triangle is a large asterism visible in the northern hemisphere is spring. However, the high rate of rotation results in an oblate shape with an equatorial bulge. Zosma is a main star in the constellation Leoand makes up the constellation outline. 3.324), Adhafera (Zeta Leo, mag. The variability of Denebola was first reported in 1970 by M. S. Frolov, who included the star on the list of suspected Delta Scuti variables. Like other zodiac constellations, it was first listed by the Greek astronomer Claudius Ptolemy in the 2nd century CE and is considered one of the 48 Greek constellations. The name Regulus, derived from a Latin word for king, reflects an ancient belief in the astrological importance Star type Deneb is a blue-white supergiant of the spectral type A2 Ia. Ancient Chinese astronomers designated it the first star of the five-star asterism "Seat of the Five Emperors", hence its Chinese name 五帝座一 (Wǔdìzuò-yī). In total more than sixty probable members of the group have been identified. In Johann Bayer's Uranometria (1603), it was designated β (Beta) as the second-brightest star in the constellation. 1 History 2 Locations 3 Appendices 3.1 References 3.2 Background information 3.2.1 Depicting the planet in canon 3.2.2 Details from reference works 3.3 Apocrypha 3.4 External links Genetic engineering was used on … Other navigational stars in this area of the sky include the bright Sirius in the constellation Canis Major, Aldebaran in Taurus, Procyon in Canis Minor, Alphard in Hydra, Pollux in Gemini, Alpheratz in Andromeda, Diphda in Cetus, and Betelgeuse and Rigel in Orion. It is also a suspected Delta Scuti variable star. The 10 brightest stars in Leo are Regulus (Alpha Leo, mag. [14] On R. A. Proctor's 1871 star chart of the Northern Hemisphere it was designated Deneb Aleet. Occultation. Denebola and the Leo Triplet, image: Wikisky. Observations with the Herschel Space Observatory have provided resolved images, which show the disk to be located at a radius of 39 astronomical units from the star, or 39 times the distance from the Earth to the Sun. 2.98), Chertan (Theta Leo, mag. It is a white main sequence star, twice the Sun's mass with 50% more of its radius. Denebola, NGC 3800 and NGC 3872, image: Wikisky. The star is a fast spinner, with a projected rotational velocity of 128 km/s. 2.56), Epsilon Leonis (mag. Its shape is an oblate spheroid. of the weather), as the star's individual title. Its estimated age is between 100 and 380 million years. We also use third-party cookies that help us analyze and understand how you use this website. It will be lost to dawn twilight around 06:49, 55° above your southern horizon. The star can be seen with the naked eye, that is, you don't need a telescope/binoculars to see it. Denebola, Beta Leonis (β Leo), is a white main sequence star located at a distance of 35.9 light years from Earth in the constellation Leo. 2.113), Zosma (Delta Leo, mag. Acamar Achernar Acrux Adhara Albireo Alchiba Alcor Alcyone Aldebaran Alderamin Algenib Algol Algorab Alhena Alioth Alkaid Alkes Almach Alnair Alnilam Alnitak Alpha Centauri Alphard Alphecca Alpheratz Altair Aludra Ankaa Anser Antares Arcturus Ascella Asterope Atlas Atria Avior Baten Kaitos Bellatrix Betelgeuse Bharani Canopus Capella Caph Castor Celaeno Deneb Denebola Diphda Dubhe Electra Elnath Eltanin Enif Fomalhaut Gacrux Gamma Cassiopeiae Gienah Ginan Hadar Hamal Imai Izar Kaus Australis Kaus Borealis Kaus Media Kepler-22 Kochab Kraz Maia Marfik Markab Megrez Meissa Menkalinan Menkar Menkent Merak Merope Mesarthim Methuselah Star Miaplacidus Mimosa Minkar Mintaka Mira Mirach Mirfak Mirzam Mizar Mu Cephei Naos Nunki Peacock Phecda Pherkad Pleione Polaris Pollux Procyon Proxima Centauri Rasalhague Regor Regulus Rho Ophiuchi Rigel Rigil Kentaurus Ruchbah Sabik Sadr Saiph Sargas Scheat Schedar Segin Seginus Shaula Sheratan Sirius Spica Stephenson 2-18 Suhail Taygeta Thuban Toliman Unukalhai UY Scuti Vega VV Cephei VX Sagittarii Wasat Wezen WOH G64 Zeta Reticuli Zubenelgenubi Zubeneschamali. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. All the stars of this group share a roughly common motion through space, although they are not gravitationally bound. The Sun, in comparison, has an equatorial rotation velocity of 2 km/s. The effective temperature of Denebola's outer envelope is about 8,500 K, which results in the white hue typical of A-type stars. Denebola (β Leo, β Leonis, Beta Leonis) is the third brightest star in the zodiac constellation of Leo. [22], This article is about the star. [18] Al-Biruni, a Muslim scholar and polymath of the 11th century, wrote of it: "The heat turns away when it rises, and the cold turns away when it disappears."[18]. Denebola is a relatively near star. Denebola /dəˈnɛbələ/, 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. It is one of the largest white 'A' spectral type stars known. But opting out of some of these cookies may affect your browsing experience. Denebola (β Leo, β Leonis, Beta Leonis) is the second brightest star in the constellation Leo.It is an A-class star that is about 36 light-years (11 pc) distant from earth, and has a luminosity about twelve times that of the sun.Its apparent magnitude is 2.14. The name Denebola (pronunciation: /dəˈnɛbələ/) comes from the Arabic name Deneb Elased, derived from ðanab al-asad, meaning “the tail of the lion.” It refers to the star’s position in the constellation. Deneb is a bluish-white star of spectral type A2Ia, with a surface temperature of 8,500 Kelvin. It’s almost twice as massive as the Sun, and about 15 times brighter. Denebola is 15 times brighter than our sun, and hotter, having estimated surface temperatures of around 8.500 K. Thus, it is around 1.4 times hotter than our s… View Denebola in 3D! There is still no direct evidence of any planets orbiting Denebola, but their existence has not been ruled out either. “Leo Major and Leo Minor,” plate 20 in Urania’s Mirror (1824), a set of 32 astronomical star chart cards based on Alexander Jamieson’s A Celestial Atlas, engraved by Sidney Hall. Denebola is well-known to stargazers because it is used to find the Virgo Cluster, a cluster of galaxies that contains many bright members catalogued by Charles Messier. It is 77 light-years from Earth. 3.486), Subra (Omicron Leo, mag. Denebola is the 59th brightest star in the night sky and the 3rd brightest star in Leo based on the Hipparcos 2007 apparent magnitude. This means that Denebola's consuming its nuclear fuel at a faster rate, so it'll live a shorter life. Since the planets of our Solar System were apparently created from such a circumstellar dusty cloud, Denebola's dust implies the possibility that the star might have planets as well, though there is no direct evidence for them. Fixed star Denebola, Beta Leonis, is a blue star in the tail of the Lion, Leo constellation. Necessary cookies are absolutely essential for the website to function properly. Denebola is the second brightest star in Leo and the 61st brightest star in the sky. Denebola is a suspected variable star of the Delta Scuti type. β Leonis (Latinised to Beta Leonis) is the star's Bayer designation. But Denebola is a blue-white star, which means that its surface temperature is several thousand degrees hotter than the Sun's. Denebola has a mass 1.78 times that of the Sun and a radius 1.728 times solar. 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. The Leo Triplet of galaxies, consisting of the spiral galaxies Messier 65, Messier 66, and NGC 3628, appears closer to Denebola, while the M96 Group, centred on the spiral galaxy Messier 96 and including the spiral galaxy Messier 95 and the elliptical Messier 105, lies closer to Regulus. It marks the tail of the celestial Lion. 70 relations. The stars of the Great Diamond are just as easy to identify. Denebola marks one of the vertices of the Great Diamond. 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 are unresolved to the naked eye and have a combined magnitude brighter than β.It is an A-type main sequence star with 75% more mass than the Sun and fifteen times the Sun's luminosity. Beta Leonis (or Denebola) is the second brightest star in the constellation Leo. Leo is home to many bright deep sky objects. This means it is very hot 7,500 -> 10,000 Kelvin and will appear as white. 1", https://en.wikipedia.org/w/index.php?title=Denebola&oldid=982672908, Creative Commons Attribution-ShareAlike License, This page was last edited on 9 October 2020, at 16:26. Denebola is a prominent member of the fairly common "Vega" class of stars that are surrounded by disks of infrared-emitting dust. The name Denebola was officially approved by the International Astronomical Union’s (IAU) Working Group on Star Names (WGSN) on June 30, 2016. Denebola has a high projected rotational velocity of 128 km/s, which is of the same order of magnitude as for the very rapidly rotating star Achernar. The star can easily be seen without binoculars. Star Characteristics and Features. The Greeks knew the star as Alkaia, meaning “mallow.” In the Alfonsine Tables, it was listed as Denebalezeth and as Dafira, the latter denoting the tuft of hair at the end of the lion’s tail. In Hindu astronomy, the star is associated with a nakshatra (lunar mansion) called Uttara Phalgunī. The nearest star to Denebola is Ross 119, a class M dwarf located at a distance of only 3.6 light years from Denebola. A line extended from Megrez through Phecda, the inner stars of the Dipper’s bowl, points toward Regulus, the star that sits at the base of the Sickle and marks the heart of the celestial Lion. And if you placed the two stars side by side, Denebola would appear about 15 times brighter than the Sun. Leo is the 12th largest constellation in the sky, occupying an area of 947 square degrees. The star is surrounded by an isothermal dust shell with a temperature of about 120 K (-153° C) and a radius of 39 astronomical units from the star. In addition to the Leo Triplet and the M66 Group, the constellation contains the spiral galaxies NGC 2903, NGC 3626, NGC 3370 (the Silverado Galaxy), NGC 3190, and NGC 3607, the Leo Cluster of galaxies, whose brightest member is the elliptical galaxy NGC 3842, and the interacting galaxies NGC 3226 and NGC 3227 (Arp 94). [13] (Deneb in Cygnus has a similar name origin.) Leo also contains Wolf 359, one of the nearest stars to the Sun, the carbon star CW Leonis, the brightest star in the infrared N-band (10 μm), the variable red giant R Leonis, and Caffau’s Star (SDSS J102915+172927), one of the oldest known stars in our galaxy with an estimated age of 13 billion years. The Great Diamond, or Diamond of Virgo, is a prominent spring asterism formed by the bright stars Cor Caroli in Canes Venatici constellation, Arcturus in Boötes, Spica in Virgo, and Denebola in Leo. It is part of the Supreme Palace enclosure. The Chinese name for Denebola is 五帝座一 (Wǔdìzuò-yī), the First Star of the Thrones of the Five Emperors. These cookies will be stored in your browser only with your consent. Several bright Messier galaxies can also be found in the region of the sky between Denebola and the brighter Regulus. The best time of year to observe the stars and deep sky objects in Leo is during the month of April, when the constellation rises high in the evening sky. In the Alphonsine Tables it was recorded as Denebalezeth. Regulus, brightest star in the zodiacal constellation Leo and one of the brightest in the entire sky, having an apparent visual magnitude of about 1.35. It’s in the east as night falls, at the bottom of the figure that outlines the lion. The traditional name Denebola is shortened from Deneb Alased, from the Arabic phrase ذنب الاسد ðanab al-asad 'tail of the lion', as it represents the lion's tail, the star's position in the Leo constellation. The luminosity class “Va” indicates that it is highly luminous for a main sequence star. Denebola is an A-type main sequence star with 75 percent the … The Chinese asterism called Thrones of the Five Emperors is formed by Denebola with the stars HIP 57646, HIP 57320, 95 Leonis, and HIP 57779. It also bears the Flamsteed designation of 94 Leonis (assigned on the basis of increasing right ascension rather than luminosity) and additional designations followed as the star was recorded in subsequent star catalogues. This suggests that they were born in the same location, and perhaps initially formed an open cluster. It is a Delta Scuti type variable star, meaning that its magnitude varies very slightly over a period of a few hours. Denebola visual magnitude is 2.14, making it the 62th brightest star in the sky. reported variations in brightness with an amplitude of 0.025 magnitudes over a period of 0.05 days. It is a main sequence star with the stellar classification A3 V. It has an apparent magnitude of 2.113 and is approximately 35.9 light years distant from Earth. Based on the spectral type (A4V) of the star, the star's colour is blue - white. As the 11th century Iranian scholar Al-Biruni explained, “The heat turns away when it rises, and the cold turns away when it disappears.”. Denebola, along with Spica and Arcturus, is part of the Spring Triangle asterism, and by extension, also of the Great Diamond together with the star Cor Caroli. Also known as the Diamond of Virgo, the asterism is a prominent feature of the spring sky. As its name implies, a neutron star is an exotic type of star that is composed entirely of neutrons. Denebola is an A-type main sequence star with 75% more mass than the Sun and 15 times the Sun's luminosity. 1.40), Algieba (Gamma Leo, mag. Denebola is a proposed member of the Argus Association (the IC 2391 supercluster), a stellar association that also includes the open cluster IC 2391 (the Omicron Velorum Cluster) and the stars Alpha Pictoris, Gomeisa (Beta Canis Minoris), and Epsilon Pavonis. These stars are not gravitationally bound, but they share a common motion through space, indicating that they formed in the same stellar nursery and were once members of an open cluster. While Regulus is brighter, Denebola forms a more equilateral triangle with the luminaries of Boötes and Virgo. Cor Caroli lies directly below Alkaid, the leftmost star of the handle of the Big Dipper, marking the tip of the Great Bear’s tail. The WGSN's first bulletin of July 2016[16] included a table of the first two batches of names approved by the WGSN, which included Denebola for this star. Denebola /dəˈnɛbələ/,[12] 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 lies at a distance of 35.9 light years from Earth. Based on parallax measurements from the Hipparcos astrometry satellite, the star is at a distance of about 36 light-… It forms a triangle with its neighbours Zosma (Delta Leonis) and Chertan (Theta Leonis). It is the second brightest star in Leo and its name refers to the tail of the Lion. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Beta (β) Leo, Denebola, is a blue star in the tail of the Lion. In comparison, the distance from the Sun to the nearest star system, Alpha Centauri, is 4.37 light years. Denebola, Vindemiatrix and the Virgo Cluster, image: Wikisky. This means it is very hot 7,500 -> 10,000 Kelvin and will appear as white. Its mass is estimated at 19 M☉. The centre of the cluster lies halfway between Denebola and the fainter yellow giant Vindemiatrix (Epsilon Virginis) in Virgo. 2.08), Denebola (Beta Leo, mag. The radius of the debris disk was resolved in images obtained with the Herschel Space Observatory and released in 2010. Observations with the Infrared Astronomical Satellite (IRAS) in the 1980s attributed these to circumstellar dust. With an apparent magnitude of 2.113, it is the third (individually the second) brightest star in Leo, after Regulus and Algieba. This occurs at the end of a star's lifetime, when its nuclear fuel is exhausted and it is no longer supported by the release of nuclear energy… This will cause a blast wave that ejects the star's envelope into interstellar space. Denebola is a relatively young star with an age estimated at less than 400 million years. The outer layer of the star is ejected, while the core collapses into a very hot neutron star about 20 kilos. Denobula was an inhabited planet in the Denobula Triaxa system. Other stars in this association include Alpha Pictoris, Beta Canis Minoris and the open cluster IC 2391. Denebola lies on the eastern side of Leo, marking its tail. It has an apparent magnitude of 2.113 and an absolute magnitude of +1.93. You also have the option to opt-out of these cookies. Kinematic studies have shown that Denebola is part of a stellar association dubbed the IC 2391 supercluster. Since 1943, its spectrum has served as one of the stable references by which other stars are classified. Delta Scuti variables are young pulsating stars that exhibit slight variations in brightness (less than 1 magnitude) over a period of 30 minutes to 7 hours due to both radial and non-radial pulsations.

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