regulus constellation

Regulus (Latin for “little king”; also called Alpha Leonis), the brightest star, is of magnitude 1.35. Throughout history, Regulus has been associated with royal power, and to the ancient Babylonians was known as Sharru (the King), to the Akkadians as Amil-gal-ur (King of the Celestial Sphere), and to the Persians as Miyan (the Centre), or as Venant, one of the four “royal stars” that watched over all the other stars in the form of a Fixed Cross, the others being Aldebaran, Fomalhaut, and Antares. Regulus Corneas (レグルス・コルニアス) was a Sin Archbishop of the Witch Cult, representing greed until he was defeated by Reinhard van Astrea, Natsuki Subaru and Emilia. [1], NGC 2903 is a barred spiral galaxy discovered by William Herschel in 1784. However, the combined Regulus BC pair is visible in medium-sized amateur telescopes about 177 seconds of arc from Regulus A. Its parent body is Comet Tempel-Tuttle, which causes significant outbursts every 35 years. Bacchi Sidus (star of Bacchus) was another of its titles, the god Bacchus always being identified with this animal. Even dimmer is Regulus C, the faintest star of the Regulus system that has been observed directly, which at magnitude +13.5 requires a substantial telescope to be seen. They are so close together, however, such that their colors can only be separated spectroscopically. Stars However, Regulus’ heliacal rising, which is when the star becomes visible in the east for a short while just before sunrise, occurs in the first week of September each year, and is visible to most observers on Earth. One other major effect of Regulus’ high spin rate is “gravity darkening”, or a phenomenon which has resulted in the photosphere of Regulus being lot hotter at the polar regions than elsewhere, and these regions being at least five times as bright as the stars’ equatorial regions per any given unit of area. At issue is the fact that Kepler’s Third Law holds true only for two point-like masses, which means that Regulus’ highly oblate shape may noticeably alter the mechanics of the two stars’ mutual orbit around their common centre of mass. • Mass: 3.8 sol [9] The Persians called Leo Ser or Shir; the Turks, Artan; the Syrians, Aryo; the Jews, Arye; the Indians, Simha, all meaning "lion". Regulus in Leo can be seen from latitudes between +90 and -65°, with the constellation found by following the pointer stars of the Big Dipper in the opposite direction of Polaris to the striking lionesque figure of Leo. It has the lowest metallicity of any known star. It is about 13 billion years old, making it one of the oldest stars in the Galaxy. It is 77 light-years from Earth. • Other Designations: Alpha Leonis, 32 Leo, Cor Leonis, Aminous Basilicus, Lion’s Heart, Rex, Kalb al Asad, Kabeleced, FK5 380, GCTP 2384.00, GJ 9316, HIP 49669, HR 3982. The normal peak rate is approximately 10 meteors per hour. Regulus's constellation is a crossword puzzle clue. • Rotational Velocity: 347 km/s The lion's mane and shoulders also form an asterism known as "The Sickle," which to modern observers may resemble a backwards "question mark.". 5 Bizarre Paradoxes Of Time Travel Explained, 10 Most Popular Universities to Study Astronomy, Dwarf Planet Ceres Found to Be an Ocean World, Astronomers Verify Proxima Centauri Hosts Earth-Sized Planet, Chinese Tianwen-1 Mars Mission On Track For Its July Launch, Astronomy PhD Student Discovers 17 New Worlds. In its core, NGC 2903 has many "hotspots", which have been found to be near regions of star formation. However, since Regulus A has a rotational velocity of 347 km/s, its highly distorted shape is thought to have serious implications for the stability of the pair’s orbital period, and the orbit itself. Of the tens of billions of trillions of stars composing the observable universe, only a very small percentage are visible to the naked eye. [1], M95 and M96 are both spiral galaxies 20 million light-years from Earth. For the astrological sign, see, Zodiac constellation passing through the celestial equator, The 41 additional constellations added in the 16th, 17th and 18th centuries, L. Phil Simpson (Springer 2012) Guidebook to the Constellations: Telescopic Sights, Tales, and Myths, p. 235 (, Tamra Andrews (Oxford University Press 2000) Dictionary of Nature Myths: Legends of the Earth, Sea, and Sky (, "Astronomers discover smallest "exoplanets" yet", "Universe's Largest Structure Discovered", The Deep Photographic Guide to the Constellations: Leo, Star Map of Leo and Information from Students for Exploration and Development of Space, Leo's skymap and information from Gary Madison, New planet discovery in Leo's constellation, Warburg Institute Iconographic Database (over 300 medieval and early modern images of Leo),, Articles containing potentially dated statements from 2002, All articles containing potentially dated statements, Articles with unsourced statements from April 2020, Creative Commons Attribution-ShareAlike License, This page was last edited on 12 October 2020, at 03:28. [9][7] The Nemean Lion would take women as hostages to its lair in a cave, luring warriors from nearby towns to save the damsel in distress, to their misfortune. Its name is Latin for lion, and to the ancient Greeks represented the Nemean Lion killed by the mythical Greek hero Heracles meaning 'Glory of Hera' (known to the ancient Romans as Hercules) as one of his twelve labors. M95 is a barred spiral galaxy. Regulus is a main star in the constellation Leo and makes up the constellation outline. As a point of interest, Regulus’ spin rate is just 15% or so below the value at which the star would fly apart under the enormous centrifugal forces generated by its high rotational velocity. Regulus C Facts. Regulus C is not part of the constellation outline but is within the borders of the constellation. [12] Zeus commemorated this labor by placing the Lion in the sky.[12]. This coming weekend, keep an eye out for the moon as it passes Regulus, the brightest star in the constellation of Leo, the Lion.Regulus … Based on the spectral … [citation needed] In tropical astrology, the Sun is considered to be in the sign Leo from July 23 to August 22, and in sidereal astrology, from August 16 to September 17. In old India, the star was known as Magha (the Mighty), while the Greek astronomer Ptolemy used the word Basiliskos (“little king”) to describe it, which was later translated into Latin by Nicolaus Copernicus as Regulus. Realizing that he must defeat the Lion with his bare hands, Hercules slipped into the Lion's cave and engaged it at close quarters. • Radius: 3.092 sol Its symbol is (Unicode ♌). The combined Regulus system has an apparent magnitude of +1.35, which makes it the twenty-first most luminous “star” in the entire night sky. [11], In Greek mythology, Leo was identified as the Nemean Lion which was killed by Heracles (Hercules to the Romans) during the first of his twelve labours. It is a Mira variable with a minimum magnitude of 10 and normal maximum magnitude of 6; it periodically brightens to magnitude 4.4. Nonetheless, the last occultation of Regulus by Venus occurred on July 7th, 1959, and the next occultation by Venus will only occur in October of 2044. Regulus is the brightest star in the constellation of the Lion and the 22nd brightest star in the night sky while also sitting closest to the ecliptic (the path of the Sun, Moon and other Planets) meaning Regulus can be seen from anywhere on Earth. Note, though, that the star was seen to be occulted by the asteroid 166 Rhodope on October 19th, 2005 by twelve observers from Portugal, Spain, Italy, and Greece. Based on Regulus’ color, temperature, luminosity, and temperature, it was first thought by investigators that Regulus was no more than between 50 and 100 million years old, especially given its mass. It is very similar in size and shape to the Milky Way and is located 25 million light-years from Earth. Regulus (Alpha Leonis), meaning “Prince” or “Little King” in Latin, is the brightest star in the constellation Leo, and the 21st brightest star in the entire sky. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. More recently, Regulus was also occulted by the asteroid 163 Erigone in the wee hours of March 20th, 2014, although the event is not known to have been observed by anyone. [12] The Lion was impervious to any weaponry; thus, the warriors' clubs, swords, and spears were rendered useless against it. • Age: 1 billion years Leo is also home to some of the largest structures in the observable universe. The star formation in this region is thought to be due to the presence of the dusty bar, which sends shock waves through its rotation to an area with a diameter of 2,000 light-years. ", Media related to Leo (constellation) at Wikimedia Commons, This article is about the astronomical constellation. Regulus or Alpha Leonis (Alp Leo) is the brightest naked eye star in the constellation Leo.With an apparent magnitude of 1.36, Regulus is the 21st brightest star in the entire sky (see: 50 Brightest Stars ).Its absolute magnitude is -0.52 and its distance is 78 light years.The Equinox J2000 equatorial coordinates are RA = 10h 08m 22.3s, Dec = +11° 58' 02". Wolf 359 is a red dwarf of magnitude 13.5; it periodically brightens by one magnitude or less because it is a flare star. Modern astronomers, including Tycho Brahe in 1602, excised a group of stars that once made up the "tuft" of the lion's tail and used them to form the new constellation Coma Berenices (Berenice's hair), although there was precedent for that designation among the ancient Greeks and Romans.[4]. Based on the spectral type (B7V) of the star, the star's colour is blue . Leo contains many bright galaxies; Messier 65, Messier 66, Messier 95, Messier 96, Messier 105, and NGC 3628 are the most famous, the first two being part of the Leo Triplet. Omissions? Regulus . The name Regulus, derived from a Latin word for king, reflects an ancient belief in the astrological importance • Luminosity: 288 sol Regulus also had distinctly regal associations, as it was known as the King Star. Souls from Regulus are souls who read alot, getting lost in the fantasy fiction of whatever tale they are reading, and make great writers. The star SDSS J102915+172927 (Caffau's star) is a population II star in the galactic halo seen in Leo. One of the 48 constellations described by the 2nd-century astronomer Ptolemy, Leo remains one of the 88 modern constellations today, and one of the most easily recognizable due to its many bright stars and a distinctive shape that is reminiscent of the crouching lion it depicts. Regulus is best seen during the late winter and spring from northern hemisphere, but except for a month on either side of August 22nd, the star is visible in the sky at different elevations and positions throughout the year. Starwatch 2 March 2020. However, Manilius called it Jovis et Junonis Sidus (Star of Jupiter and Juno). (adsbygoogle = window.adsbygoogle || []).push({}).

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