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. It is one of the largest white 'A' spectral type stars known. Denebola is a main-sequence star of spectral type A3Va, it is a particularly luminous dwarfgenerating energy through nuclear fusion at its core. This means it is very hot 7,500 -> 10,000 Kelvin and will appear as white. [21], In astrology, Denebola was believed to portend misfortune and disgrace. Based on parallax measurements from the Hipparcos astrometry satellite, the star is at a distance of about 36 light-… Observations with the Infrared Astronomical Satellite (IRAS) in the 1980s attributed these to circumstellar dust. And if you placed the two stars side by side, Denebola would appear about 15 times brighter than the Sun. View Denebola in 3D! Other stars in this association include Alpha Pictoris, Beta Canis Minoris and the open cluster IC 2391. Denebola visual magnitude is 2.14, making it the 62th brightest star in the sky. 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 … 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 /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. Denobula was an inhabited planet in the Denobula Triaxa system. However, the high rate of rotation results in an oblate shape with an equatorial bulge. But Denebola is a blue-white star, which means that its surface temperature is several thousand degrees hotter than the Sun's. 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). 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. 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. 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… 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. Several bright Messier galaxies can also be found in the region of the sky between Denebola and the brighter Regulus. It has 75% more mass than the Sun, which results in a much higher overall luminosity and a shorter life span on the main sequence. Its mass is estimated at 19 M☉. The star is a fast spinner, with a projected rotational velocity of 128 km/s. Denebola — sometimes Deneb (meaning "tail") — is the modern name for this star, abbreviated from Al Dhanab al Asad, the Lion's Tail, the Greek Alkaia (meaning 'Mallow'); the 17th century German astronomer Bayer gave it as Denebalecid and Denebaleced; English writer on globes John Chilmead (circa 1639), as Deneb Alased; and the 17th … The Sun, in comparison, has an equatorial rotation velocity of 2 km/s. 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. 2.113), Zosma (Delta Leo, mag. The 10 brightest stars in Leo are Regulus (Alpha Leo, mag. [17], 15th century astronomer Ulugh Beg, gives the name Al Ṣarfah, the Changer (i.e. This website uses cookies to improve your experience while you navigate through the website. It marks the Lion's tail. Denebola is an A-type main sequence star with 75 percent the … Beta Leonis (or Denebola) is the second brightest star in the constellation Leo. From Redmond , Denebola is not readily observable since it is very close to the Sun, at a separation of only 13° from it. A study published in 1998 found evidence of a short period radial velocity variability with a period of 0.108 days. 3.486), Subra (Omicron Leo, mag. Denebola - β Leonis (beta Leonis) Denebola, also designated as β Leonis (beta Leonis), is a variable and multiple main-sequence star in the constellation of Leo. Denebola is a relatively young star with an age estimated at less than 400 million years. 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. 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. These cookies do not store any personal information. The Chinese referred to this Denebola shows excess emissions in the infrared. Leo is home to many bright deep sky objects. 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. The centre of the cluster lies halfway between Denebola and the fainter yellow giant Vindemiatrix (Epsilon Virginis) in Virgo. 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. Denebola, NGC 3800 and NGC 3872, image: Wikisky. 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. It is the point or the top star of this shape. Both the Great Diamond and the Sickle can be found using the bright stars of the Big Dipper. It is part of the Supreme Palace enclosure. The luminosity class “Va” indicates that it is highly luminous for a main sequence star. Denebola marks one of the vertices of the Great Diamond. It was the homeworld of the Denobulans, a warp-capable humanoid species, as well as of the Denobulan lemur. 2.08), Denebola (Beta Leo, mag. The name Regulus, derived from a Latin word for king, reflects an ancient belief in the astrological importance Denebola shows fluctuations in brightness of 0.025 magnitudes about 10 times per day. This means it is very hot 7,500 -> 10,000 Kelvin and will appear as white. 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. Begin typing the name of a town near to you, and then select the town from the list of options which appear below. It is mandatory to procure user consent prior to running these cookies on your website. It marks the tail of the celestial Lion. 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. They are two of the 16 navigational stars located in the equatorial region of the eastern hemisphere. The stars of the Great Diamond are just as easy to identify. Denebola is one of the several bright stars with names that refer to the tails of the animals that the constellations represent. Since 1943, its spectrum has served as one of the stable references by which other stars are classified. It forms a triangle with its neighbours Zosma (Delta Leonis) and Chertan (Theta Leonis). 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 has a mass 1.78 times that of the Sun and a radius 1.728 times solar. User consent prior to running these cookies may affect your browsing denebola type of star and! Dubbed the IC 2391 supercluster, which results in an oblate shape with an amplitude of 0.025 magnitudes a! Great Diamond and lies near the prominent Sickle of Leo the Virgo cluster, image:.. Dwarf located at a faster rate, so it 'll live a life... Of spectral type A2Ia, with the luminaries of Boötes and Virgo still no evidence... Denebola lies at a faster rate, denebola corresponds to the nearest star system, Alpha,. 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