regulus star mythology

Bottom line: Regulus, the brightest star in the constellation Leo the Lion, is associated with the arrival of spring, and is prominent in May skies. Astronomers from Babylon knew the star as Sharru (the King) and in Persia, Regulus was one of the four Royal Stars, along with Aldebaran in Taurus, Antares in Scorpius and Fomalhaut in Piscis Austrinus. NGC 3628, image: Pablo Carlos Budassi (CC BY-SA 4.0). [17], Regulus BC is 5,000AU[35] from RegulusA. There will be a series of 20 lunar occultations of Regulus from July 26, 2025, to December 27, 2026. The galaxy was discovered by Charles Messier in 1780. Later he received a 6-inch (15 cm) Criterion Dynascope and found all the Messier Objects in one year (1969-70). The distances between B and C ranged from 4.0 to 2.5 arc seconds between 1867 and 1943. These limelight-hogging celestial objects combine whirling, pinwheeling arms with scatterings of sparkling stars, glowing bursts of gas, and dark, weaving lanes of cosmic dust, creating truly awesome scenes especially when viewed through a telescope such as the NASA/ESA Hubble Space Telescope. It was discovered by the German astronomer Albert Marth on April 5, 1864. Fixed star Regulus, Alpha Leonis, is a 1.4 magnitude blue-white star in Leo Constellation. The primary component, formally known as Regulus, has been given the stellar classification B8 IVn, with the luminosity class of a subgiant star. It has a visual magnitude varying from 4.4 to 11.3 with a period of 312 days and is classified as a Mira variable. Stretching across 947 square degrees of the sky, it is the third largest zodiac constellation (after Virgo and Aquarius) and the 12th largest of all constellations. Regulus is best seen in late winter and spring in the northern hemisphere, when it rises high above the horizon in the evening. The two stars complete an orbit around their common centre of mass every 40 days or so. Zeta Leonis has a visual magnitude of 3.33 and is about 274 light years distant from the solar system. Photo: ESO. Regulus is the nearest first-magnitude star to the ecliptic, located only 0.465 degrees north of it. It is a bluish star, and it can be seen all around the globe. . In medieval astrology, Regulus was one of the 15 Behenian fixed stars, believed to hold special astrological power. NGC 3384 is an elliptical galaxy, approximately 35.1 million light years distant. The Leonids usually peak on November 17-18 every year and have a radiant near the bright star Gamma Leonis. With just 1/3 the mass of the sun, Regulus C is a red dwarf star with a spectral classification of M4V. Regulus B and C are gravitationally bound to each other, and together theyre called Regulus BC. It exhibits an excess emission of infrared, which indicates the presence of a circumstellar disk of dust. By early April, Regulus was well up in the southeast an hour after sunset. The four stars with their modern names, and their ancient Persian names (in brackets) were: The four dominant stars have an apparent magnitude1.5 or brighter. Look towards Regulus around that date and youll see the sun. Wolf 359 is one of the nearest stars to the Sun. "There's nothing that we know of that can speed this star up," said Georgia State University astronomer Hal McAlister, who led the study of the star at the university's Center for High Angular Resolution (CHARA), in an interview at the time. The star is visible to the unaided eye. Heres how it works. The first is a K2V star, while the second is about M4V. The equatorial diameter of Regulus is 32 percent larger than its polar diameter. My latest is an analysis of the Njord Skadi myth, from Avalonia Books. Regulus is the only 1st magnitude star to sit almost squarely on the ecliptic, which marks the path of the sun, moon and planets across our sky. They were also believed to govern events in the world. Regulus passes through SOHO's LASCO C3 every August. The easiest way to spot the constellation Leo in the sky is to look for the Sickle, shaped like a backwards question mark. Its arms are also asymmetrical, thought to have been influenced by the gravitational pull of other galaxies within the same group as Messier 96. The stars name, Regulus, means little king or prince in Latin. It is sometimes known by its traditional name, Subra. It has a visual magnitude of 10.6/10.9. The Planets. For this reason, it is regularly occulted by the Moon and, rarely, by Mercury and Venus. It has a visual magnitude of 10.2 and is approximately 32 million light years distant. In other words, they are the brightest stars in the sky. The brighter giant is 180 times more luminous than the Sun and has an apparent magnitude of 2.28. In the northern hemisphere, Regulus is best seen in the evening in the late winter and spring. Also, Regulus Black is the name of a character in the "Harry Potter" series by J.K. Rowling. Something went wrong while submitting the form. Regulus D is a 12th magnitude star located at a separation of 212 arcseconds. It is part of the Leo Triplet, along with M65 and NGC 3628. Persian mythology: Regulus is one of 4 royal stars. Regulus was seen as the main star because it was in the constellation of Leo, giving it the power of the lion, signifying the strength of kings with large implications. New York, The second brightest star is Denebola, an A-type main-sequence star-forming the tail of the lion. It is between 390 and 490 light years distant from the Sun. The name Regulus is a diminutive form of rex, which is Latin for king. The star is sometimes known by its traditional names Chort (from the Arabic al-khart or al-khurt, which means small rib), Coxa (Latin for hip) and Chertan (from the Arabic al-khartn, meaning two small ribs). They eventually expel their outer envelopes to form planetary nebulae and become white dwarfs within a few million years. The traditional name Rgulus is Latin for 'prince' or 'little king'. The galaxy has a visual magnitude of 8.9 and is about 36 million light years distant. History and Mythology. The constellation name Leo is pronounced /lio/. The Jupiter-Mars group: Regulus, Acturus, Altair, Antares If you have a Jupiter-Mars Star prominent on an angle, like your Ascendant or Midheaven, this gives you honour and skills with strategy. And if you have a news tip, correction or comment, let us know at: community@space.com. Leo Triplet, image: Wikimedia Commons/Marekmazuch (CC BY-SA 4.0). The galaxy was discovered by the French astronomer Pierre Mchain in 1781 and Charles Messier subsequently included it in his catalogue four days later. Look through a small telescope using at least 50x magnification, and you can see Regulus as two objects separated by 177 arcseconds. It is located in the second quadrant of the northern hemisphere (NQ2) and can be seen at latitudes between +90 and -65. (The Persians called it first Venant and then Miyan (the center). Regulus is the bright star that makes the point of the question mark. Leo constellation is home to the bright stars Regulus and Denebola, the nearby star Wolf 359, and to a number of famous deep sky objects, among them galaxies Messier 65, Messier 66, Messier 95, Messier 96, Messier 105, and NGC 3628. Indeed, the lowest mass white dwarfs are usually found in binary systems where they lost a significant fraction of their mass.". Regulus, also known as Alpha Leonis, is the brightest star in the constellation Leo and the 21st brightest star in the night sky. Zosma is a white main sequence star of the spectral type A4 V, approximately 58.4 light years from Earth. He's a longtime member of NASA's Solar System Ambassadors program. The Behenian fixed stars are a selection of fifteen stars considered especially useful for magical applications in the medieval astrology of Europe and the Arab world. (CC BY 4.0). In India it was known as Magh ("the Mighty"), in Sogdiana Magh ("the Great"), in Persia Miyan ("the Centre") and also as Venant, one of the four 'royal stars' of the Persian monarchy. I. Its brightness is 288 times that of the Sun. 2.98), Chertan (Theta Leo, mag. So Regulus is visible at some time of night throughout the year, except for about a month on either side of August 22. The components in the system are too close together to be able to resolve through a telescope. In contrast, our sun spins on its axis about once every 27 days. Regulus, Alpha Leonis, Leo, 32 Leonis, HR 3982, HIP 49669, FK5 380, GJ 9316, GCTP 2384.00, 79.3 0.7 light-years (24.3 0.2 parsecs), Leo A, HD 87901, SAO 98967, LTT 12716, BD+122149, TYC 833-1381-1, GC 13926, GCRV 6417, 79.02 0.05 light-years (24.23 0.02 parsecs), Leo B/C, HD 87884, SAO 98966, LTT 12714, BD+122147, TYC 833-134-1, GC 13922, GCRV 6416, PPM 127133, Gaia DR2 3880785530720066176, Gaia DR1 3880785526425032832. The Arabic name for the star is Qalb al-Asad, which means the heart of the lion.. The star is also known by its Latin name Cor Leonis and the Arabic Qalb al-Asad (Kalb al Asad, Kabeleced). M65 does not contain much dust and gas and there isnt much star formation occurring in it. The star was first discovered in 1969 by the American astrophysicist Eric Brecklin and his team of astronomers. So bright planets sometimes pass near Regulus.. In some years, the moon occults (passes in front of) this star as seen from Earth. In Greek mythology, Leo is associated with the tale of the Nemean Lion from the myth of Heracles and his twelve labours. The Sun joins Regulus on August 22. These are minor objects in the inner Solar System. Regulus B has a radius of 0.83 solar radii and Regulus C, 0.37 solar radii. Its traditional name, Algieba or Al Gieba, comes from the Arabic Al-Jabhah, which means the forehead. The star is sometimes also known by its Latin name, Juba. Despite its proximity to the Sun, Wolf 359 can only be seen through a large telescope. Kappa Leonis is a binary star with an apparent magnitude of 4.46, approximately 210 light years distant from the solar system. In the sky, the six bright stars that form the Sickle of Leo represent the lions head, and the brightest star in the constellation, Regulus (Alpha Leonis), marks the beasts heart. The star was also famously mentioned in an episode of The Outer Limits. "We don't have any idea why it's really doing that," McAlister said. As Regulus closely aligns to the mean orbits of large bodies of the solar system and involves more light reaching the Earth than such other stars, the system has advanced telescopic use (to study and identify objects occulting and casting their shadow on a telescope, including known or unknown asteroids of the solar system such as Trojans, being in line by definition with their associated planetary plane). If we go across the sea to Egypt, we can see a different take on the constellation Leo myth. Regulus D is a 12th magnitude companion at 212",[33] but is an unrelated background object. Christians in the Middle Ages sometimes referred to it as one of Daniels lions. Source: wigwamgolf. In Arabia, Regulus was referred to as Malikiyy, "the kingly one", according to stellar nomenclature expert Richard Hinckley Allen. They are dimmer main sequence stars with an apparent magnitude of 8.14 and 13.5. You can locate Regulus also known as Alpha Leonis at the base of a star pattern that appears like a backward question mark. 1. It has 214% of the solar radius and is about 15 times more luminous than the Sun. Another bright star, Denebola (Beta Leonis) marks the tip of the lions tail. The stars traditional name, Alterf, comes from the Arabic a-arf, which means the view (of the lion).. Source. His articles have appeared in numerous publications including Space.com, Sky & Telescope, Astronomy and Rolling Stone. The lion lived in a cave in Nemea, a town located to the south-west of Corinth. It is one of the lowest-mass stars ever discovered, as well as one of the faintest. Astrophotographer John Chumack sent in a photo of Mars (red), Regulus (blue star) and the waning crescent moon in a triangle over his backyard observatory in Dayton, OH. Regulus, or Alpha Leonis, is the brightest star in Leo onstellation (magnitude 1.40). The Washington Double Star Catalog", Bright Star Regulus near the Leo I Dwarf Galaxy, https://en.wikipedia.org/w/index.php?title=Regulus&oldid=1149452547, Articles containing Ancient Greek (to 1453)-language text, Short description is different from Wikidata, Articles with unsourced statements from September 2022, Articles with unsourced statements from August 2018, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 12 April 2023, at 10:00. The genitive form of Leo, used in star names, is Leonis (pronunciation: /lions/). Alpha Leonis is the closest bright star to the ecliptic. The fainter one is Regulus B, a cool orange dwarf star with a spectral classification of K2 V. The B star has a mass that is 80% of the suns, and its half as bright. In Greek mythology, The Greeks associated Constellation Leo with the Nemean Lion. The next brightest star to the ecliptic is Wasat, Delta Geminorum, with a visual magnitude of 3.53. Both Icarus and the supernova were visible in the field of the massive galaxy cluster MACS J1149+2223, which acted as a gravitational lens for both objects. He began his 1st comet hunting program in 1975 and found his 1st comet in 1978, after 1700 hours of searching. Icarus is the second most distant individual star discovered to date, second only to Earendel (WHL0137-LS) in the constellation Cetus. Regulus was associated with Jupiter and Mars, and linked with granite and mugwort. 5-star recommended Tempe escape room, perfect for a night out, family bonding, date night, celebrations like birthday. I am the author of five books on mythology, including one on sun-goddesses. Located in the southern hemisphere, Centaurus is named for the half man half horse creatures of Greek mythology. It has an apparent magnitude of 1.35, making it the 21st brightest star in the night sky. It has an apparent magnitude of 10.25 and is approximately 35 million light years distant. Zosma, Delta Leonis, is another rapid rotator in Leo, with a projected rotational velocity of 180 km/s. The two asterisms overlap in the spring night sky. The star can easily be seen without binoculars. It has a relatively high proper motion. [4] The constellations of the royal stars were said to be fixed because their positions were close to the four fixed points of the sun's path. Search reviews. They added, however, that they couldn't see anything in the system that would cause it to move faster. Each of the 15 stars was associated with a planet, a plant, and a gemstone, and the latter two were used in rituals to bring out the star's influence. The Gamma Leonis system has a combined apparent magnitude of 1.98 and is approximately 130 light years distant from the Sun. Regulus A is only a few million years old. The name Regulus is a diminutive form of "rex", which is Latin for "king". The location of Regulus (Alpha Leonis), image: Stellarium. Charles Messier discovered it in 1780. Regulus B and Regulus C share a common proper motion. It was named by the great Polish scientist, Copernicus. Regulus was also known by the Arabic name Qalb al-Asad, the Greek name Kardia Leontos and Latin Cor Leonis, all meaning the heart of the Lion. In Europe, the star was known as Rex and Basiliscus. The royal stars are mentioned in the Bundahishn, a collection of Zoroastrian cosmogony and cosmology. It has an apparent magnitude of 1.35 and lies at a distance of 79.3 light years, or 24.3 parsecs, from Earth. He's a former planetarium director in Little Rock, Fort Worth and Denver and an adjunct faculty member at Metropolitan State University of Denver. It is a bluish star, and it can be seen all around the globe. The Sickle is outlined by the stars Epsilon Leonis, Rasalas (Mu Leonis), Adhafera (Zeta Leonis), Algieba (Gamma Leonis), and Eta Leonis. The Sickle looks like a backward question mark and consists of the stars that outline the mane of the celestial Lion. Regulus completes a rotation in only 15.9 hours and its equatorial rotational velocity is 96.5 percent of its breakup velocity. The Egyptians considered Leo the House of the Sun, as when they first charted the stars, Leo was rising with the sun at the solstice, so Leo and Sirius were associated with the heat of summer. The name of this star is a diminutive form of the Latin Rex. Play Some Golf at the Wigwam Resort. Icarus was discovered in 2018 by a team of astronomers who were studying the multiply lensed supernova SN Refsdal with the Hubble Space Telescope. Messier 65, image: Adam Block/Mount Lemmon SkyCenter/University of Arizona (CC BY-SA 4.0). The galaxy resembles a giant maelstrom of glowing gas, rippled with dark dust that swirls inwards towards the nucleus. 3.324), Adhafera (Zeta Leo, mag. It was discovered by Pierre Mchain on March 20, 1781 and then included in Messiers catalogue a few days later. Leo constellation map by IAU and Sky&Telescope magazine. It is spinning extremely rapidly, with a rotation period of only 15.9 hours, which causes it to have a highly oblate shape. Marissa B. Goodyear, AZ. Sigma Leonis is a blue-white star belonging to the spectral class B9.5Vs. 9. Accessed 1 May, 2023. Regulus is not a binary star for once, although there is a binary nearby, and possibly a white dwarf. It has a mass of 3.8 solar masses and is an extremely fast spinner, with a rotational velocity of 347 km/s. The central region of M95 has a ring-shaped starburst region around the core with a diameter spanning about 2,000 light years. NGC 3357 is an elliptical galaxy in Leo. This refers to the star that stands in the breast of the Lion: the King. The star has two known companions nearby, a set of binary stars, but observations in the past few years suggest there may be a white dwarf lurking close to Regulus as well. The last spate was around 2017, with occultations every month from December 2016 till July 2017, each one limited to certain areas on Earth. Cor Caroli is another name for Regulus. [4], The constellations of the royal stars were said to be fixed because their positions were close to the four fixed points of the sun's path. [27] The next will occur on October 1, 2044, also by Venus. [26] Occultations by Mercury and Venus are possible but rare, as are occultations by asteroids. Get breaking space news and the latest updates on rocket launches, skywatching events and more! This phenomenon occurs mostly in barred spiral galaxies such as Messier 95 and our home, the Milky Way. In the last 40 years of his life, he completed over 50 Messier Marathons and wrote 2 books on the subject. In Chinese astronomy, Regulus is part of the Xuanyuan asterism, which consists of about 17 stars, among them 10 Ursae Majoris, Alpha Lyncis, 38 Lyncis, Kappa Leonis, Alterf (Lambda Leonis), Epsilon Leonis, Rasalas (Mu Leonis), Adhafera (Zeta Leonis), Eta Leonis, Algieba (Gamma Leonis), Subra (Omicron Leonis), and Rho Leonis. The black hole at the centre of the galaxy is believed to have a mass of 9.7 billion solar masses. Regulus A is a spectroscopic binary star composed of a blue-white main sequence star belonging to the spectral class B7 V, and a companion star which cannot be resolved, but is believed to be a white dwarf. Regulus spins on its axis once every 16 hours. The two stars complete an orbit around their common centre of mass every 40 days or so. This black hole releases huge amounts of energy as it consumes matter falling into it and causing the centre to shine far brighter than its surroundings. Regulus appears as a single star to the unaided eye, but it is in fact a quadruple star system consisting of two pairs of stars and possibly more components. According to the first one, the constellation represents seven brothers and their sister who fled to the sky to escape a pursuer. Later, as the stars of Aries took the spring equinox position, Aldebaran moved to the cross-quarter day of May 1, and Regulus took over August 1. Regulus can also sometimes be occulted by asteroids. Regulus is easy to find and identify because it is part of a prominent asterism known as the Sickle of Leo. Regulus A is 3.8 times the mass of our sun, about three times as wide, and almost 288 times as bright. Her latest book, "Why Am I Taller? [citation needed], In 747 BCE the Babylonian King Nabu-nasir adopted a calendar derived from the motions of the four stars, one following an eight-year cycle and one a nineteen-year cycle (later adopting the nineteen-year calendar as standard). The Leo Ring is an enormous primordial cloud of hydrogen and helium found in orbit of two galaxies in the Leo constellation. 2.56), Epsilon Leonis (mag. This pattern, known as the Sickle, makes up the head and forequarters of Leo the Lion. NGC 3596 is an intermediate spiral galaxy with a visual magnitude of 12.0. Easily recognizable for the Sickle asterism that outlines the Lions mane and shoulders, Leo is known for its bright stars mainly Regulus and Denebola and a number of bright deep sky objects. Regulus is a bright star seen in the constellation Leo. It has the stellar classification A2 V and a mass 2.5 times that of the Sun. The only time of year when the star cant be seen is for a month on either side of August 22, when it lies too close to the Sun. The Sickle can be found using the bright stars of the Big Dipper, the most recognizable part of the constellation Ursa Major. It was the most important of the Four Royal Stars of the Persians, which marked the seasons. Click to share on Facebook (Opens in new window), Click to share on Twitter (Opens in new window), Click to share on Pinterest (Opens in new window), Click to share on Reddit (Opens in new window), Click to email a link to a friend (Opens in new window), Click to share on Print & PDF (Opens in new window), Apollo Soranus: the wolf, the sun, and thesacrifice, Aldebaran: the Bulls Eye WE ARE STAR STUFF, Spica: the Wheat Sheaf We Are Star Stuff. Due to the stars oblate shape, its poles are closer to the centre of mass and have a higher effective temperature and therefore brightness, while the equatorial region is cooler and less bright. M66 and NGC 3628 had an encounter in the past, and the gravitational interaction between the two resulted in an exceptionally high central mass concentration in M66, a high molecular to atomic mass ratio, and a resolved noncorotating clump of H I material being removed from one of M66s spiral arms. This occurs in spates every 9.3 years, due to lunar precession. Before the discovery of the white dwarf, Regulus was believed to be a much younger star, with an estimated age between 50 and 100 million years. These are the 22 stars with apparent magnitudes of less than +1.50. Leo's brightest star, Regulus, was often called the "Red Flame" and was thought to contribute to the heat of summer. Among the odd effects on the star: Regulus is much hotter at its poles (27,212 F, or 15,100 C) than its equator (18,032 F or 10,000 C). Denebola also exhibits a strong infrared excess, which suggests that it may have a circumstellar debris disk of dust in its orbit. It is one of the zodiac constellations and one of the largest constellations in the sky. [1] The Persians believed that the sky was divided into four districts with each district being guarded by one of the four Royal Stars. It looks like a single point of light, but is really four stars. The poles are said to be gravity brightened, while the equator is gravity darkened. The poles of Regulus are five times brighter than the equator. Image: Hubble ESA (CC BY 2.0). The BC pair lies at an angular distance of 177 arc-seconds from Regulus A, making them visible in amateur telescopes.[24]. Polish astronomer and mathematician Nicolaus Copernicus gave the star its name, which was equivalent to Basiliskos (little king), used by the Greek astronomer Ptolemy. Lyra is a Latin name that in English means "The Lyra". It has a nominal luminosity of 11,300 times that of the Sun, but this varies over the course of the pulsation cycle, from 6,250 to 15,800 times the Suns luminosity. If you've already donated, we apologize for the popup and greatly appreciate your support. Few of the Universes residents are as iconic as the spiral galaxy. Earendel is almost twice as distant, lying 28 billion light-years away. Regulus is only slightly fainter than Deneb in the constellation Cygnus and Mimosa in Crux, and it just outshines Adhara in Canis Major, Castor in Gemini, and Shaula in Scorpius. However, it would have taken at least a billion years for the white dwarf to form. CW Leonis is at a late stage of its evolution, blowing off its outer layer to eventually become a white dwarf. The galaxy belongs to the NGC 3607 Group, one of the many Leo II groups of galaxies. Its estimated age is 162 million years. Regulus is a bright star seen in the constellation Leo. Given the extremely distorted shape of the primary, the relative orbital motion may be notably altered with respect to the two-body purely Keplerian scenario because of non-negligible long-term orbital perturbations affecting, for example, its orbital period. The main component in the Regulus A system is orbited by a companion with at least 0.3 solar masses. Messier 96 is a very asymmetric galaxy; its dust and gas is unevenly spread throughout its weak spiral arms, and its core is not exactly at the galactic centre. NGC 3593 is a spiral galaxy in Leo. The constellation is home to the Leo Triplet of galaxies, which consists of the galaxies Messier 65, Messier 66, and NGC 3628, the Leo I Group, which includes the spiral galaxies Messier 95 and Messier 96 and the elliptical galaxy Messier 105, and the Cosmic Horseshoe, a gravitationally lensed system of two galaxies located at a distance of 5.2 and 10.3 gigalight years, discovered in 2007. If you like the image at the top, click here. Star Trek fans will recognize it as the location of the Battle of Wolf 359, in which the Borg, led by the assimilated Captain Picard, obliterate the Starfleet ships, leaving few survivors, among them Benjamin Sisko, the future captain of Deep Space Nine. . In late February, Regulus is visible throughout the night. Its estimated age is less than 400 million years. 1.40), Algieba (Gamma Leo, mag. Some observers consider Denebola instead of the brighter Regulus to mark one of the vertices and form a more equilateral triangle. Regulus in Leo. 5 star rating. The other components of the Alpha Leonis system are still on the main sequence, but considerably fainter than Regulus A. It was discovered by William Herschel in 1784. The neighboring constellations are Cancer, Coma Berenices, Crater, Hydra, Leo Minor, Lynx, Sextans, Ursa Major and Virgo. On March 20, 2014, the star was occulted by 163 Erigone, a relatively large asteroid first discovered in April 1876. In fact, this image from Hubble frames a perfect spiral specimen: the stunning NGC 2903. When it is at its brightest, it can be seen without binoculars, and when it is on the dimmest end of the spectrum, one needs at least a 7 cm telescope to see the star. Babylonians knew the star Regulus as the star that stands at the Lions breast, or the King Star. This group, named the M96 Group, also includes the bright galaxies Messier 105 and Messier 95, as well as a number of smaller and fainter galaxies. It's the brightest star in the constellation and among the brightest in Earth's night sky. Visit our corporate site (opens in new tab). Mastodon: https://qoto.org/@howellspace, SpaceX Dragon debris lights up sky in bright fireball over western US during reentry (video), SpaceX Falcon Heavy rocket aborts triple satellite launch at last minute. Regulus B, and its companion star, Regulus C are dimmer main sequence stars that are bound together by gravity. ", is co-written with astronaut Dave Williams. Regulus B has the stellar classification K2 V, indicating an orange main sequence star, while Regulus C appears red and has been given the spectral class M4 V. The stars are much less massive than the primary, with masses of 0.8 and 0.3 solar masses respectively. The stars Altair and Achernar are also fast spinners with flattened, oblate shapes. NGC 3626 is a medium-tightness spiral galaxy in Leo. The rotation of Regulus speeds at 700,000 mph (1.1 million kph) at its equator. A daily update by email. Regulus appears singular, but is actually a quadruple star system composed of four stars that are organized into two pairs. It has a visual magnitude of 10.8 and is a member of the Leo II Group (NGC 3607 Group) of galaxies. quannah chasinghorse biography, michael fromm obituary,

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