sagittarius mythology
Sagittarius is symbolized by the centaur, half-human and half-horse beings in Greek mythology. It is located about 50,000 light years from the centre of the Milky Way. Ferraro. NGC 6528 is another globular cluster, located just to the southwest of NGC 6522. Having this many shining stars piled on top of one another from our perspective makes globular clusters a popular target for amateur skywatchers and scientists alike. Satyrs have two legs while centaurs have four. Each zodiac sign has a special symbol, or glyph, that's associated with the mythology behind it. The planets SWEEPS-04, orbiting the magnitude 18 star SWEEPS J175853.92291120.6 (F5V), and SWEEPS-11, with the parent star SWEEPS J175902.67291153.5, are among the most distant exoplanets known, both located at a distance of 27,710 light years from Earth. It has an apparent magnitude of 12 and with a linear radius of 160 light years it occupies 7.3 of the apparent sky. As a beloved archer, you will join the ranks of others who chased their dreams and adventures, such as Samuel L. Jackson, Taylor Swift, and Brad Pitt. It may look like something from The Lord of the Rings, but this fiery swirl is actually a planetary nebula known as ESO 456-67. Image: ESA/Hubble & NASA. The cluster was discovered by William Herschel on May 24, 1784. It was originally discovered by Charles Messier in 1764. Although centaurs could be male and female, the male ones came to be associated with lust: these part-human creatures seemed to be jealous of the fully human women they encountered and wanted to carry them off at almost every opportunity. Sagittarius, the ninth sign of the zodiac, is the home of the wanderers of the zodiac. It is one of only four star systems known to be hydrogen-deficient, which makes it difficult to classify U Sgr. It has an apparent magnitude of 3.97 and is approximately 170 light years distant. In Greek myths, Sagittarius is shown as the representative of the Greek god Zeus. The nebula was discovered by Edward Charles Pickering on July 15, 1882. Westerhout 31 (W31) is a massive H II region in Sagittarius. Sagittarius is the 15th largest constellation in the sky. The nebula has an apparent size of only 10 by 8 arc seconds and an apparent magnitude of 13. The Upsilon Sagittarii system is about 1,672 light years distant and has an orbital period of 137.939 days. It is located between Zeta and Sigma Sagittarii. The stars agony has culminated in a wonderful planetary nebula known as NGC 6565, a cloud of gas that was ejected from the star after strong stellar winds pushed the stars outer layers away into space. Sakurais Object is a so-called born again star, one that was originally a white dwarf but swelled into a red giant as a result of a late thermal pulse and is expected to evolve back into a white dwarf. The binary system has a combined apparent magnitude of 2.60. In this picture, foreground stars look big and golden when set against the backdrop of the thousands of white, silvery stars that make up M69. Lambda Sagittarii marks the handle of the Teapot asterism (see below) and points to the famous interstellar cloud, the Lagoon Nebula. It is a dramatic and short-lived series of events, and Sakurais Object has allowed astronomers a very rare opportunity to study the events in real time. The red dwarf MOA-2009-BLG-387L, located almost 20,000 light years away, is host to an orbiting planet with a mass between 1.0 and 6.7 times that of Jupiter. The bright star in the centre of this image is not the star of this show. Myth of Sagittarius. Instead, Sagittarius is thought to represent Crotus, a satyr who invented the archer's bow. Delta Sagittarii is a multiple star system approximately 306 light years distant in the constellation Sagittarius. Messier 75 is a globular star cluster about 67,500 light years from Earth. The Sagittarius Dwarf Galaxy is an old galaxy, composed mainly of Population II stars (old, metal-poor stars). NGC 6822 is a barred irregular galaxy that belongs to the Local Group of galaxies. The cluster was discovered by John Herschel in 1830. This galaxy is currently colliding with, and being absorbed by, the Milky Way, which is a monster in size when compared to this tiny one. The Red Spider Nebula is a planetary nebula that occupies an area of 1.5 arc minutes in the northwestern part of Sagittarius. NGC 6822 has an apparent magnitude of 9.3 and is approximately 1.63 million light years distant. Chiron the centaur was brilliant and kind a teacher to figures like Jason and Achilles, and a friend to the hero Heracles (via Greek Mythology). It was discovered by James Dunlop on June 2, 1826. Sagittarius constellation has its roots in Sumerian mythology. The two nebulae are probably part of the same larger star-forming region. It lies close to the star Zeta Sagittarii. The subgiant has an apparent magnitude of 3.93 and is approximately 122 light years distant from the solar system. It is located only 5.41 light years from Barnards Star in the neighbouring constellation Ophiuchus. V4641 Sagittarii is the fourth known microquasar, discovered after four of the fastest X-ray intensity changes ever seen from a star. Edwin Hubble identified 15 variable stars in Barnards Galaxy, 11 of which were Cepheids, luminous variable stars that have a strong relationship between luminosity and pulsation period, which makes them excellent standard candles (objects with a known luminosity) for determining galactic and extragalactic distance scales. It is approximately 29,700 light years distant from Earth. A stars final moments are captured in this image from the NASA/ESA Hubble Space Telescope. The last occultation occurred on September 3, 423. The star lies approximately 228 light years from Earth. The soft gamma repeater SGR 1806-20 is a magnetar, a neutron star with an exceptionally strong magnetic field, more than 1015 gauss (1011 tesla) in intensity , or 1-2 quadrillion (short scale) times that of the Earth. Its inner elongated shape is believed to be the result of a fast wind of material travelling away from the hot 15th magnitude central star. The two brighter components form a close binary system with an apparent magnitude of 13.28. They have the head and torso of a man, but the bottom half of a hoofed beast. Sagittarius in Mythology The story of Sagittarius originates from Greek mythology, specifically that of Chiron, an immortal centaur who acted as teacher to many ancient Greek heroes. The Hourglass Nebula contains several Herbig-Haro objects, small patches of nebulosity indicating that there are newly born stars in the vicinity, and providing direct evidence of star forming activity in the region. The constellation name Sagittarius is pronounced /sdtris/. It has a similar structure to the Small Magellanic Cloud, the dwarf galaxy in the constellation Tucana. Alpha Sagittarii shares its traditional name, Rukbat, with the star Delta Cassiopeiae (now formally known as Ruchbah). The Terebellum is a quadrilateral formed by four fourth magnitude stars in Sagittarius, all within two degrees of each other: Omega Sagittarii, 59 Sagittarii, 60 Sagittarii and 62 Sagittarii. Red Spider Nebula (NGC 6537), image: Judy Schmidt (CC BY 2.0). Sometimes, Sagittarius is also associated with the Greek goddess Tyche and the Norse God Thor. The several star forming regions that make up W31 are located at different distances, but appear together in the sky because they lie in the same line of sight when observed from Earth. Reddish nebulae in this image reveal regions of active star formation, wherein young, hot stars heat up nearby gas clouds. Sagittarius is Latin for "archer," and since ancient times the constellation has been represented as a creature wielding a bow and arrow. It has an apparent magnitude of 9 and lies 9,450 light years from Earth. Little Gem Nebula, image: Judy Schmidt (CC BY 2.0). It is a fire sign, considered to be a masculine, positive, and extrovert in character. The cluster has a diameter of 10 arc minutes and an apparent magnitude of 4.6. The nebula is an H II region originally discovered by the Swiss astronomer Jean-Philippe Loys De Chseaux in 1745. The Sagittarius Dwarf Irregular Galaxy contains mainly intermediate-age stars as a result of a prolonged period of star formation. It seems that this cluster has already been kidnapped from its former home and now is part of our own galaxy. Sagittarius embodies adventure and the pursuit of meaning. What's strange about this centaur is that it has wings, two heads, of which one is that of a panther and the other is a human head. Delta Sagittarii has a radius 62 times solar, a mass about five times solar, and is 1180 times more luminous than the Sun. It was discovered by Charles Messier in 1764. Sometimes Sagittarius is wrongly identified as the centaur Chiron, represented by the constellation Centaurus. Image: ESA/Hubble & NASA. Why Chiron gets credit as the figure in Sagittarius mythology is a bit of a mystery. The genitive form of Sagittarius, used in star names, is Sagittarii (pronunciation: /sdtria/). It is located in the fourth quadrant of the southern hemisphere (SQ4) and can be seen at latitudes between +55 and -90. The cluster is about 19 light years across. Satyrs have human heads and torsos with goat legs (and sometimes horns). It has an apparent magnitude of 9.28. The third star in the system is an O-type star with an apparent magnitude of 15.36. Lambda Sagittarii is what astronomers sometimes refer to as a clump star: one undergoing the final stages of its existence, but stable nevertheless and fusing helium into carbon and oxygen in its core. NGC 6544 is a globular cluster located less than a degree southeast of the Lagoon Nebula. It has a faint 14th magnitude companion 32 arc seconds away. It can be observed through a small telescope and is a popular deep sky object among amateur astronomers. These figures come from Greco-Roman mythology, but it's thought that the ancient Babylonians were the first to identify Sagittarius as an archer, in 11th century B.C. The cluster contains some of the brightest, most massive stars in our galaxy. Nunki has a faint (magnitude 9.5) companion about 5.2 arc minutes away. The cluster spans 10 light years and has an apparent size of 5 arc minutes. Image: ESO/VPHAS+ team. They are believed to be a type of magnetar. Astronomers obtained this portrait of Barnards Galaxy using the Wide Field Imager attached to the 2.2-metre MPG/ESO telescope at ESOs La Silla Observatory in northern Chile. In mythology, Centaurs were hard drinkers, unreliable, misleading, crude, wild, and adulterous. The estimated age of the cluster is more than 12 billion years, making NGC 6522 one of the oldest known clusters in the Milky Way. Spanning an area of 150 light years across, Sagittarius B is one of the largest molecular clouds in our galaxy and the single largest one in the vicinity of the galaxys core. The region has relatively low amounts of dust and allows a view of the Galactic centre. The brightest companion star is an F class dwarf with an apparent magnitude of 7.77. It lies at an approximate distance of 50,000 light years from Earth. It's just a matter of which stars you think go with which other ones. It is now believed to be located at least 15 times farther away. PSR J1748-2446ad was discovered on 10 November, 2004. It is the most highly magnetized object ever discovered. In Greek mythology, Sagittarius is commonly thought to represent a centaur, a war-like creature with the torso of a man and the body of a horse. In Greek mythology, Sagittarius is Chiron, a centaur who was a teacher to gods and heroes, like Achilles. It is a very fast rotator, spinning with a speed of more than 200 kilometres per second, which is about 100 times faster than the Sun. . It has an apparent magnitude of 13.5 and can be seen near the star 16 Sagittarii. It is one of the most metal-poor galaxies known. Together these are providing a vast legacy of publicly available data for the global astronomical community. The image of the Peony Nebula star was taken by NASAs Spitzer Space Telescope in its naturally dusty region. The star is a relatively young one, with an estimated age of less than a billion years. This image from the Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESOs La Silla Observatory in Chile, shows the bright star cluster NGC 6520 and its neighbour, the strangely shaped dark cloud Barnard 86. Omega Sagittarii is a G-type subgiant marking the northeast corner of the Terebellum, about 78 light years distant from Earth. However, it is pretty unlikely that the star has a sufficiently high spin velocity to produce a LGRB and the exact inclination of its spin axis is uncertain. Terzan 7 has a considerable number of blue stragglers and the clusters centre has a particularly high concentration of these stars. It is 15-20 light years in radius and contains about 150 stars. The clusters age and low levels of nickel found in it led astronomers to believe that it may have originated in the Sagittarius Dwarf Spheroidal Galaxy (Sag DEG). In this image of ESO 456-67, it is possible to see the various layers of material expelled by the central star. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable. The globular cluster Messier 54 lies at the core of the galaxy. Other than Virgo, the Sagittarius myth is probably the most commonly misinterpreted of all of the constellation myths. The Trifid Nebula is a bright, colourful emission/reflection nebula in Sagittarius. It is elliptical in shape and about 32 arc minutes across in size. Sagittarians are complex individuals that have a unique perspective on life and relationships. It contains very few variable stars. Crotus, much like Chiron, was a skilled musician and hunter. What is atypical for a B8V class star is that Alpha Sagittarii is emitting an excess flux of X-rays, possibly because its companion star is still in the pre-main sequence stage. Messier 21, Atlas Image mosaic obtained as part of the Two Micron All Sky Survey (2MASS), a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. Sigma Sagittarii is also notable for being the brightest star that can be occulted by an exterior planet. Normally, the white dwarf stage is the last in the life cycle of a low-mass star. Messier 28 was the first globular star cluster in which a milisecond pulsar (a pulsar with a rotational period between 1 and 10 miliseconds) was discovered in 1986. The cluster lies only 10,400 light years from the Galactic centre. Alnasl comes from the Arabic al-nal which means arrowhead, and Nushaba is derived from Zujj al-Nashshaba, which means the same thing. It is located about 18,000 light years away from Earth in the Sagittarius constellation. Chiron was an intelligent, wise, and good-natured creatureunlike most of his kind. Sagittarius contains 15 Messier objects: Messier 8 (M8, NGC 6523, Lagoon Nebula), Messier 17 (M17, NGC 6618 Omega, Swan, Horseshoe or Lobster Nebula), Messier 18 (M18, NGC 6613), Messier 20 (M20, NGC 6514, Trifid Nebula), Messier 21 (M21, NGC 6531), Messier 22 (M22, NGC 6656, Sagittarius Cluster), Messier 23 (M23, NGC 6494), Messier 24 (M24, NGC 6603, Sagittarius Star Cloud), Messier 25 (M25, IC 4725), Messier 28 (M28, NGC 6626), Messier 54 (M54, NGC 6715), Messier 55 (M55, NGC 6809), Messier 69 (M69, NGC 6637), Messier 70 (M70, NGC 6681) and Messier 75 (M75, NGC 6864). The stars traditional name, Kaus Media, means the middle bow. The primary star in the Delta Sagittarii system has three dim companions: Delta Sagittarii B, a 14th magnitude star 26 arc seconds away, Delta Sagittarii C, a 15th magnitude star 40 arc seconds away, and Delta Sagittarii D, a 13th magnitude star 58 arc seconds away. It was discovered by William Herschel in 1784. Sagittarius was characterized in mythology as being unrestrained as wild or untamed horses despite their human head, arms, and torso. At the centre of the Lagoon Nebula, there is a structure known as the Hourglass Nebula (not the same object as the famous Hourglass Nebula, which is located in the constellation Musca). The brightest stars in the cluster are 20th magnitude. When this happens, the stars light drastically diminishes and ceases to excite the surrounding gas, so the nebula fades from view. It will make its closest approach to the Sun in about 150,000 years, when it comes within 6.13 light years of our solar system. During this time the black hole flared up in X-ray intensity half a dozen or more times. This striking view of the globular star cluster Messier 55 in the constellation of Sagittarius (the Archer) was obtained in infrared light with the VISTA survey telescope at ESOs Paranal Observatory in Chile. Once enough material was ejected, the stars luminous core was exposed and it began to produce ultraviolet radiation, exciting the surrounding gas to varying degrees and causing it to radiate in an attractive array of colours. The stars are located at different distances from the solar system and are not gravitationally bound. The myth of centaurs: summary. Both creatures were very similar to one another and the general meaning of the Sagittarius myth remains the same, regardless of whether you think its representative had two legs or four. The Sagittarius Dwarf Elliptical Galaxy (Sag DEG) is an elliptical galaxy shaped like a loop. It lies at a distance of 35,500 light years. The nebulas central star is more than 12,000 times more luminous than the Sun. On 27 December, 2004, the brightest gamma ray burst ever detected outside the solar system was recorded emanating from the star, with an absolute magnitude of about -29. NGC 6624 is another globular cluster in Sagittarius. Chiron and Achilles. The Sagittarius Dwarf Elliptical Galaxy has an apparent magnitude of 4.5 and is approximately 65,000 light years distant. Pistol Star and Nebula (false colour composite image), photo: Don F. Figer (UCLA) and NASA. The Sagittarius symbol, or glyph is designed to depict the Centaur or Archer. WR 104 is a triple star consisting of a Wolf-Rayet star and two hot blue main sequence companions. NGC 6559, image: Adam Block/Mount Lemmon SkyCenter/University of Arizona (CC BY-SA 3.0 US). In Greek mythology, Sagittarius represents a centaur, a half human, half horse creature with the torso of a man and the body and four legs of a horse. Sagittarius is usually depicted as a centaur holding a bow and arrow. It is one of the several notable H II regions in Sagittarius. They are in fact located behind the nebula. Messier 28, based on observations made with the NASA/ESA Hubble Space Telescope, and obtained from the Hubble Legacy Archive, which is a collaboration between the Space Telescope Science Institute (STScI/NASA), the Space Telescope European Coordinating Facility (ST-ECF/ESA) and the Canadian Astronomy Data Centre (CADC/NRC/CSA). NGC 6723 is a globular star cluster in Sagittarius, near the border with Corona Australis. Some of the brightest stars in Sagittarius Delta, Epsilon, Gamma-2, Lambda, Zeta, Phi, Tau and Sigma Sagittarii form an asterism known as the Teapot. The cluster is located at a distance of 75,700 light years from Earth. This story does indeed refer to a constellation myth, but it's actually the myth behind the constellation Centaurus, not Sagittarius. Stellar corpses in this image also emit X-rays as either neutron stars or black holes in binary systems. In Sagittarius Mythology, Sagittarius is described as The Centaur (one-half horse, one-half human). This dazzling image shows the globular cluster Messier 69, or M69 for short, as viewed through the NASA/ESA Hubble Space Telescope. These same colours can be seen in the famous and impressive Ring Nebula (heic1310), a prominent example of a nebula like this one. It is classified as an irregular variable star, with an apparent magnitude varying from 4.51 to 4.65 with a period of about 20 days. Ruprecht 147, also catalogued as NGC 6774, is a dispersed open cluster in Sagittarius. The Bubble Nebula is an emission nebula located in Barnards Galaxy. 59 Sagittarii (sometimes also known as b Sagittarii) is a K-type bright giant at the southeast corner, about 1,200 light years distant. Named after the nebula that surrounds it the Peony Nebula the Peony Star is a Wolf-Rayet star with an absolute magnitude of -11.5. Alternatively, some mythology identifies Sagittarius as the son of Pan, the god who created archery. It has a mass of about 36 solar masses, which now puts it behind more than a dozen massive stars, including four members of the Arches Cluster. Gamma Sagittarii is a K type (K0III) giant star with an apparent magnitude of 2.98. Understanding the Sagittarius star sign through this half-human/half-horse imagery is once again a matter of perception. It is a hydrogen fusing dwarf star that belongs to the spectral type B2.5 V. It has an apparent magnitude of 2.1. The legions of stars in a globular cluster orbit about a shared centre of gravity. It is approximately 77.3 light years distant. Image: NASA/JPL-Caltech/Potsdam Univ. Together with the stars Delta (Kaus Media) and Lambda Sagittarii (Kaus Borealis), Epsilon Sagittarii represents the archers bow. It is a blue class B giant with an apparent magnitude of 1.79 and a luminosity 375 times that of the Sun. The cluster was discovered by William Herschel on 24 June, 1784. Presently, there exists another centaur heavenly body, Centaurus, who is accepted to be named Chiron. It is easy to find because it lies on the Milky Way and its brightest stars form an asterism known as the Teapot. Messier 18 is an open star cluster in Sagittarius. The cluster has an apparent magnitude of 10.65 and lies 25,800 light years from Earth. The first magnetar to be identified, in 2013, was SGR J17452900 or PSR J1745-2900, the soft gamma repeater orbiting a black hole in Sagittarius A*. It lies at a distance of 26,100 light years from Earth. It has about a third of the luminosity of the Eta Carinae binary system in the constellation Carina and is believed to radiate as much energy in 20 seconds as the Sun does in a year. Chiron was immortal, so he could not die. It was named after R. J. Located on the far side of our galaxy, the cluster is heavily obscured by dust, but visible in infrared wavelengths. Located 38,700 light years away, the star is likely a binary system. The Quintuplet Cluster contains more Wolf-Rayet stars than any other cluster known and several notable luminous blue variables, including the Pistol Star, V4650 Sagittarii and the runaway star V4998 Sagittarii. It belongs to the spectral type B9V. The constellation has 32 stars with confirmed planets. Astronomers recently discovered that all the stars in Terzan 7 were born at around the same time, and are about eight billion years old. Upsilon Sagittarii is a spectroscopic binary star. Most interpretations conclude that the mythology of Sagittarius refers to the centaurChiron, who was accidentally shot by Hercules (Greek mythology) with a poison arrow. The cluster is so sparse that it was once considered to be an asterism. Image: NASA, ESA, and A. Sarajedini (University of Florida) Acknowledgement: Gilles Chapdelaine. It lies at a distance of only 1,000 light years and has a radius of more than 9 light years, occupying more than 60 arc minutes of the apparent sky. The galaxy was discovered on a photographic plate taken for the ESO Atlas in June 1977. The closest complex of regions in W31 is formed by G10.2-0.3 and G10.6-0.4. Barnard, who discovered it in 1881 using a six-inch refractor telescope. The star has a luminosity 3,300 times that of the Sun and about seven solar masses. The symbol of the Sagittarius is the centaur, a half-man and half-horse being from Greek mythology, or more generally, the archeras the centaur is typically . The most prominent members are Wolf-Rayet stars and O-type supergiants. Image: ESO/F. A gas giant planet was discovered orbiting the orange dwarf HD 164604 (K3.5Vk) in 2010. The star cluster 1806-20 is home to many massive stars that are expected to end their lives as supernovas in the next few million years. The Carina-Sagittarius Arm is particularly notable for containing a large number of H II regions, giant molecular clouds and young stars. NGC 6440, based on observations made with the NASA/ESA Hubble Space Telescope, and obtained from the Hubble Legacy Archive, which is a collaboration between the Space Telescope Science Institute (STScI/NASA), the Space Telescope European Coordinating Facility (ST-ECF/ESA) and the Canadian Astronomy Data Centre (CADC/NRC/CSA). In Greek mythology, Sagittarius represents a centaur, a half human, half horse creature with the torso of a man and the body and four legs of a horse. It contains areas of massive H II emission, large clouds of partly ionized gas which show evidence of recent star forming activity. A Hubble Space Telescope photo of the planetary nebula Henize 3-1475. Evidence shows that Terzan 7 used to belong to a small galaxy called the Sagittarius Dwarf Galaxy, a mini-galaxy discovered in 1994. The Box Nebula, catalogued as NGC 6445, is a planetary nebula with a visual magnitude of 11.2. The cluster has a visual magnitude of 8.06 and lies at a distance of 19,600 light years from Earth. Around the year 6300, the system will have moved from Sagittarius to the Corona Australis constellation. Also prominent in the upper left of this new image is a striking bubble-shaped nebula. As per Greek folklore, Sagittarius is a centaur. The cluster contains 18 RR Lyrae type variable stars. Image: European Space Agency, A. Riera (Universitat Politecnica de Catalunya, Spain) and P. Garcia-Lario (European Space Agency ISO Data Centre, Spain). Image: Subaru Telescope (NAOJ), Hubble Space Telescope, Martin Pugh; Processing: Robert Gendler. It occupies an area 8.8 arc minutes in size. It was first discovered by the French astronomer Guillaume Le Gentil in 1747. It is an H II region, containing a stellar nursery full of embryonic stars. Soft gamma repeaters (SGR) are objects that emit enormous bursts of gamma-rays and X-rays at irregular intervals. (The other three are Messier 15 in the constellation Pegasus, Palomar 6 in Ophiuchus and NGC 6441 in Scorpius.). Set against a backdrop of bright stars, the rust-colored object lies in the constellation of Sagittarius (The Archer), in the southern sky. The primary component, Arkab Prior A, is a B9 type main sequence dwarf with an apparent magnitude of 3.96, while the companion star, Arkab Prior B, is a class A3 dwarf with an apparent magnitude of 7.4. It lies at an estimated distance of 50,000 light years from Earth on the other side of our galaxy. Another companion star is only 13th magnitude and can be seen 33 arc seconds away from the primary, while the faintest star in the system is 10th magnitude and is separated from the brightest star by 93 arc seconds. In Babylonian mythology, Sagittarius is associated with the centaur-like god Nergal, and depicted with two heads one human and one panther and also wings, and the stinger of a scorpion positioned above a horses tail. In this image, the NASA/ESA Hubble Space Telescope has captured the brilliance of the compact centre of Messier 70, a globular cluster. The cluster is about 67 light years in radius and has an apparent magnitude of 9.18. The cluster has an apparent magnitude of 11.29 and lies at a distance of 24,100 light years from Earth. It occupies an area of 867 square degrees. Image: NASA/CXC/MIT/F.K.Baganoff et al. It has a radius of 0.95 arc minutes. A transiting planet was spotted orbiting the magnitude 16 eclipsing variable star OGLE-TR-10 (G2V) in 2002. The constellation Sagittarius contains 17 named stars. The star is believed to have a debris disk, like Vega, the brightest star in the constellation Lyra. Alpha Sagittarii is a blue dwarf belonging to the spectral class B8V. It is located about a degree to the east of Messier 8, the more famous and much larger Lagoon Nebula. The star was discovered in February 1996 by Yukio Sakurai, an amateur astronomer. Sigma Sagittarii is sometimes also known as Nunki. In fiction, Rukbat is probably best known from Anne McCaffreys Dragonriders of Pern series of novels and stories. M69 is only 1,800 light years away from M70 and located near the Galactic centre. Centaurs have four legs, and are half-man, half-horse; satyrs have two legs and are half-man, half-goat. Most likely it comes from different cultural interpretations of the constellations. Messier later included it in his catalogue. Astronomers have nicknamed it the Garden-sprinkler Nebula due to its appearance. It has a diameter of about 20 kilometres and its rotation speed at the surface is 30,000 km/h. What is the flower of Sagittarius? It was discovered by William Herschel in 1784 using his 18-inch telescopes.
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