Such disks contain populations of colliding planetesimals, which supply the dust, and make the host stars candidate locations for exoplanets. In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN)[15] to catalog and standardize proper names for stars. It has an apparent magnitude of 2.113 and an absolute magnitude of +1.93. Begin typing the name of a town near to you, and then select the town from the list of options which appear below. 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 marks one of the vertices of the Great Diamond. It is mandatory to procure user consent prior to running these cookies on your website. It is 77 light-years from Earth. 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). They are two of the 16 navigational stars located in the equatorial region of the eastern hemisphere. Fixed star Denebola, Beta Leonis, is a blue star in the tail of the Lion, Leo constellation. It is a type A3V star. 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. For other uses, see, "VLTI near-IR interferometric observations of Vega-like stars", Centre de données astronomiques de Strasbourg, "The Star Catalogue Commonly Appended to the Alfonsine Tables", "Bulletin of the IAU Working Group on Star Names, No. Useful catalogue numbers and designations … Beta (β) Leo, Denebola, is a blue star in 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. Zavijava (Beta Virginis), a magnitude 3.6 F-type main sequence star in the constellation Virgo, is one of Denebola’s nearest neighbours. 70 relations. [13] (Deneb in Cygnus has a similar name origin.) 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. β Leonis (Latinised to Beta Leonis) is the star's Bayer designation. 35.9 ± 0.2 light years (11.00 ± 0.06 parsecs), Denebola, Deneb Elased, Deneb Aleet, Beta Leonis, β Leo, 94 Leonis, HD 102647, HR 4534, HIP 57632, SAO 99809, GC 16189, GCRV 7151, LHS 2462, FK5 444, PPM 128576, LTT 13249, BD+15°2383, GJ 448, GCTP 2738.00, ADS 8314 A, CCDM J11490+1433A, CSV 101225, IDS 11440+1508 A, IRAS 11464+1451, 2MASS J11490366+1434197, PLX 2738, TYC 870-988-1, WDS J11491+1434A. The name Regulus, derived from a Latin word for king, reflects an ancient belief in the astrological importance The fainter spiral galaxy NGC 3800 and elliptical NGC 3872 appear in the same field of view as Denebola. 3.486), Subra (Omicron Leo, mag. Denebola — a name that means “the tail of the lion” — is the third-brightest star of Leo. Denebola shows excess emissions in the infrared. 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. This suggests that they were born in the same location, and perhaps initially formed an open cluster. Both the Great Diamond and the Sickle can be found using the bright stars of the Big Dipper. 2.08), Denebola (Beta Leo, mag. Denebola is a relatively young star with an age estimated at less than 400 million years. The pair are separated by around 100 AU, have an orbital period of about 600 years, and share a common proper motion. Zosma is a main star in the constellation Leoand makes up the constellation outline. 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 Hindu astronomy, Denebola corresponds to the Nakshatra (a sector along the ecliptic) named Uttara Phalgunī (second reddish one). The name Denebola comes from the Arabic Deneb Alased, meaning Tail of the Lion. In Persian astronomy, Denebola was known as Avdem, meaning “the one in the tail.” The 15th century Timurid astronomer Ulugh Beg called it Al Ṣarfah, meaning “the changer.” The name refers to the change in weather heralded by the star. Several bright Messier galaxies can also be found in the region of the sky between Denebola and the brighter Regulus. Denebola is the 59th brightest star in the night sky and the 3rd brightest star in Leo based on the Hipparcos 2007 apparent magnitude. The star can easily be seen without binoculars. Arcturus and Spica are found by following the arc of the Dipper’s handle. Because of its fast rotation rate, Denebola is flattened at the poles and has an equatorial bulge. 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. Denebola is the second brightest star in Leo and the 61st brightest star in the sky. While Regulus is brighter, Denebola forms a more equilateral triangle with the luminaries of Boötes and Virgo. The radius of the debris disk was resolved in images obtained with the Herschel Space Observatory and released in 2010. Its mass is estimated at 19 M☉. Denebola is located in the constellation Leo. 3.33), Eta Leonis (mag. The luminosity class “Va” indicates that it is highly luminous for a main sequence star. It is now so entered in the IAU Catalog of Star Names. [22], This article is about the star. As the 11th century Iranian scholar Al-Biruni explained, “The heat turns away when it rises, and the cold turns away when it disappears.”. The brightest members of the cluster include the elliptical galaxies Messier 49, Messier 87 (Virgo A), Messier 60, and Messier 89, the barred spiral Messier 61, the intermediate spiral Messier 90, and the grand design spiral galaxy Messier 100. The tail-end star is beta Leonis, better known as Denebola, (it literally means "tail of the Lion"), an A3-type star similar to alpha Canis Major (Sirius) and about … 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). 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. It marks the Lion's tail. 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. The stars are only 8 light years apart. Based on parallax measurements from the Hipparcos astrometry satellite, the star is at a distance of about 36 light-… Easily recognizable for the Sickle asterism that outlines the Lion’s mane, the constellation represents the Nemean lion killed by Heracles as part of his 12 labours. But opting out of some of these cookies may affect your browsing experience. By clicking “Accept”, you consent to the use of ALL the cookies. Denebola is an A-type main sequence star with 75% more mass than the Sun and 15 times the Sun's luminosity. This means that Denebola's consuming its nuclear fuel at a faster rate, so it'll live a shorter life. You also have the option to opt-out of these cookies. Based on parallax measurements from the Hipparcos astrometry satellite, the star is at a distance of about 36 light-years (11 parsecs) from the Sun. Star Characteristics and Features. It will be lost to dawn twilight around 06:49, 55° above your southern horizon. Denebola is a Delta Scuti type variable star, meaning its luminosity varies very slightly over a period of a few hours. The Spring Triangle and the Great Diamond, image: Wikisky. Denebola is one of the several bright stars with names that refer to the tails of the animals that the constellations represent. Denebola makes up part of an asterism called the Spring Triangle, shown in an image below. When searching for Denebola look for the triangle at the back of the Leo constellation. From Redmond , Denebola is visible in the morning sky, becoming accessible around 00:25, when it reaches an altitude of 13° above your eastern horizon.It will then reach its highest point in the sky at 06:04, 56° above your southern horizon. [20] As the solar system is believed to have formed out of such a disk, Denebola and similar stars such as Vega and Beta Pictoris may be candidate locations for extrasolar planets. Interferometric observations give a radius that is about 173% that of the Sun. Denebola has a mass 1.78 times that of the Sun and a radius 1.728 times solar. 2.113), Zosma (Delta Leo, mag. Denebola is a member of the IC 2391 supercluster , which includes stars such as Alpha Pictoris and Beta Canis Minoris . The main component in this subsystem is a K2V-type star, with the companion being approximately a M4V-type star. 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. A study published in 1998 found evidence of a short period radial velocity variability with a period of 0.108 days. 3.324), Adhafera (Zeta Leo, mag. Kinematic studies have shown that Denebola is part of a stellar association dubbed the IC 2391 supercluster. The centre of the cluster lies halfway between Denebola and the fainter yellow giant Vindemiatrix (Epsilon Virginis) in Virgo. reported variations in brightness with an amplitude of 0.025 magnitudes over a period of 0.05 days. 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. 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. 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. Denebola is a suspected variable star of the Delta Scuti type. Occultation. Denebola, Beta Leonis (β Leo), is a white main sequence star located in the constellation Leo. Denebola lies on the eastern side of Leo, marking its tail. But Denebola is a blue-white star, which means that its surface temperature is several thousand degrees hotter than the Sun's. It’s in the east as night falls, at the bottom of the figure that outlines the lion. In total more than sixty probable members of the group have been identified. With a surface temperature of 8,500 K, it is 15 times more luminous than the Sun. Arcturus is the first bright star that appears along this curved line and Spica is the second. 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. Variations include Denebalezeth, Denebaleced, Dhanbol-asadi, Nebolellesed, and Deneb Aleet. Denebola and the brighter Regulus are among the 58 stars selected for navigation. The nearest star to Denebola is Ross 119, a class M dwarf located at a distance of only 3.6 light years from Denebola. There is still no direct evidence of any planets orbiting Denebola, but their existence has not been ruled out either. This website uses cookies to improve your experience while you navigate through the website. 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. It is also a suspected Delta Scuti variable star. The star is a fast spinner, with a projected rotational velocity of 128 km/s. Denebola has been classed as a Delta Scuti-type variable star (which vary in brightness by small amounts over periods lasting only hours and including radial as well as non-radial pulsations) as it exhibits small, Delta Sculti-type variability with around a 2.09 to 2.16 visual magnitude difference -- in V on UBV Johnson system (Mkrtichian and Yurkov, 1998). This means it is very hot 7,500 -> 10,000 Kelvin and will appear as white. Denebola is a prominent member of the fairly common "Vega" class of stars that are surrounded by disks of infrared-emitting dust. Also known as the Diamond of Virgo, the asterism is a prominent feature of the spring sky. Denebola is a main-sequence star of spectral type A3Va, it is a particularly luminous dwarfgenerating energy through nuclear fusion at its core. The stars of the Great Diamond are just as easy to identify. 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. Denebola visual magnitude is 2.14, making it the 62th brightest star in the sky. Denobula was an inhabited planet in the Denobula Triaxa system. of the weather), as the star's individual title. 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. [19] The dust surrounding Denebola has a temperature of about 120 K (−153 °C). 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… It is the second brightest star in Leo and its name refers to the tail of the Lion. It marks the tail of the celestial Lion. The Chinese name for Denebola is 五帝座一 (Wǔdìzuò-yī), the First Star of the Thrones of the Five Emperors. In 1981, C. Bartolini et al. All the stars of this group share a roughly common motion through space, although they are not gravitationally bound. 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. Beta Leonis (or Denebola) is the second brightest star in the constellation Leo. 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. However, the high rate of rotation results in an oblate shape with an equatorial bulge. Denebola shows fluctuations in brightness of 0.025 magnitudes about 10 times per day. This category only includes cookies that ensures basic functionalities and security features of the website. 12Th largest constellation in the field of celestial navigation because they are two of the group been! Its radius Chertan ( Theta Leo, marking its tail classification A3Va indicating! Variations in its brightness 0.025 magnitudes over a period of a few hours hydrogen-fusing! A very hot 7,500 - > 10,000 Kelvin and will appear as white eastern of! Poles and has an equatorial bulge that outlines denebola type of star Lion Scuti type variable star, the is... Ten times per day members of the figure that outlines the Lion −153. Denebola has a temperature of 8,500 K, which supply the dust denebola! 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