It is one of only four star systems known to be hydrogen-deficient, which makes it difficult to classify U Sgr. Tau Sagittarii is an orange giant star belonging to the spectral type K1 or K2, approximately 120 light years distant. Like other zodiac constellations, Sagittarius was first catalogued by the Greek astronomer Ptolemy in the 2nd century. Ferraro. Sagittarius was characterized in mythology as being unrestrained as wild or untamed horses despite their human head, arms, and torso. The star lies approximately 228 light years from Earth. Terzan 7 is the brightest of the six globulars discovered by Agop Terzan in 1968. The cluster is about 19 light years across. It belongs to the spectral class F2II. Image: ESO. The shared birthday is another uncommon property; a large number of globular clusters, both in the Milky Way and in other galaxies, seem to have at least two clearly differentiated generations of stars that were born at different times. It was originally discovered by Charles Messier in 1764. The cluster is heavily obscured and has an apparent magnitude of 12.8. The stars traditional name, Kaus Borealis, means the northern bow. It marks the top of the centaurs bow. Image: ESO/F. Since it lies very close to the ecliptic, Lambda Sagittarii is occasionally occulted by the Moon and, more rarely, by planets. It has an apparent magnitude of 3.97 and is approximately 170 light years distant. 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. The cluster is so sparse that it was once considered to be an asterism. 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. Crotus and Chiron share a lot in common. Mu Sagittarii is a multiple star system in Sagittarius, with individual components designated Polis A through Polis E. Its traditional name, Polis, comes from the Coptic Egyptian word for foal.. Messier 54 is a dense globular cluster with an apparent magnitude of 8.37, approximately 87,400 light years distant and about 150 light years across. Messier 70 is a globular cluster in Sagittarius, located close to the Galactic centre. It is elliptical in shape and about 32 arc minutes across in size. Messier 23 is an open star cluster, discovered by Charles Messier in June 1764. It is located approximately 17,300 light years from Earth. 1806-20 contains at least three Wolf-Rayet stars, an OB supergiant, the soft gamma repeater SGR 1806-20 and LBV 1806-20, once of the most luminous stars in the Milky Way. Box Nebula (NGC 6445), image: NASA and STScI. History and Mythology Of The Sagittarius Constellation. 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. It is classified as a UV Ceti-type flare star, one undergoing sudden dramatic increases in brightness for a few minutes. In Sagittarius Mythology, Sagittarius is described as The Centaur (one-half horse, one-half human). The galaxy was named after the American astronomer E.E. It does not really have the structure of a spiral. It is one of the closest stars to the Sun and the nearest star in Sagittarius constellation. At the nebulas centre, a clutch of massive, scorching stars send waves of matter smashing into surrounding interstellar material, generating a glowing structure that appears ring-like from our perspective. The name is derived from the Arabic word rukbah, which means knee.. Messier 18 is an open star cluster in Sagittarius. It has an apparent magnitude of 5.1 and is approximately 10,600 light years distant. It is one of the constellations of the zodiac. Messier 21 is another open star cluster in Sagittarius. Sagittarius, the half human and half horse, is the centaur of mythology, the learned healer whose higher intelligence forms a bridge between Earth and Heaven. At the time, it was believed to be a magnitude 11.4 slow nova as it had not been visible in older images of the region and only appeared to brighten in the previous couple of years. NGC 6822 is a barred irregular galaxy that belongs to the Local Group of galaxies. It was discovered by Charles Messier on August 31, 1780, along with another globular cluster, Messier 70. A stars final moments are captured in this image from the NASA/ESA Hubble Space Telescope. The Quintuplet Cluster is another dense open cluster located in same region as the Arches Cluster, about 26,000 light years from Earth and 100 light years from the centre of the Milky Way. This story does indeed refer to a constellation myth, but it's actually the myth behind the constellation Centaurus, not Sagittarius. Whether you think Sagittarius is based on Chiron or Crotus doesn't really matter, I suppose. Pern, the planet on which the action takes place, orbits Rukbat, which is described as a class G yellow star in the novels. signal, the first and only radio signal ever received that indicated the possibility of extraterrestial intelligence. It can be observed through a small telescope and is a popular deep sky object among amateur astronomers. In honor of Chiron's sacrifice, Zeus created the constellation Sagittarius in his likeness. The Bubble Nebula is an emission nebula located in Barnards Galaxy. The clusters, Arches (upper right), Quintuplet (upper center), and the GC cluster (bottom center), contain massive stars that appear as very bright, point-like X-ray sources when winds from their surfaces collide with those from an orbiting companion. Credit: Wikipedia/Public domain The constellation is associated with the centaur Chiron. It is located about 50,000 light years from the centre of the Milky Way. Delta Sagittarii is a multiple star system approximately 306 light years distant in the constellation Sagittarius. Mythology. Zodiac Signs and Greek mythology One of the most well-known aspects of astrology is the connection between the zodiac signs and Greek mythology. Kaus Australis is the brightest star in the constellation Sagittarius and the 36th brightest star in the sky. It is a suspected binary star, even though a companion has never been confirmed. The cluster was discovered by Charles Messier in 1778. One could easily interpret the shape as that of a half-man/half-horse instead of a half-man/half-goat. Image: ESO/J. 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 clusters small central region has one of the highest star densities in the Milky Way. Astronomers have nicknamed it the Garden-sprinkler Nebula due to its appearance. NGC 6530 is an open cluster within the Lagoon Nebula. It is one of the nearest globular star clusters to Earth. It contains a young cluster, with an estimated age of 0.6 million years, which has at least four O-type stars and five massive young stellar objects (YSOs). The centaur is depicted as aiming an arrow toward the heart of the neighbouring constellation Scorpio, represented by the red supergiant star Antares. It is a relatively young cluster, only 4.6 million years old, and it contains at least 57 stars. In some cases, however, the star reignites in a helium flash and expands to return to a red giant state, ejecting huge amounts of gas and dust in the process, before once again shrinking to become a white dwarf. Satyrs did.) PSR J1748-2446ad was discovered on 10 November, 2004. The signs are: Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius and Pisces. In mythology, Centaurs were hard drinkers, unreliable, misleading, crude, wild, and adulterous. Sometimes it is also called the Sagittarius I Dwarf or Sagittarius Dwarf Spheroidal. 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. It was discovered by Italian astronomer Giovanni Battista Hodierna in 1654. 59 Sagittarii (sometimes also known as b Sagittarii) is a K-type bright giant at the southeast corner, about 1,200 light years distant. (The other three are Messier 15 in the constellation Pegasus, Palomar 6 in Ophiuchus and NGC 6441 in Scorpius.). Hercules accidentally shot Chiron with a poisoned arrow while hunting, and since he. The Sagittarius Dwarf Irregular Galaxy (Sag DIG) is a dwarf galaxy located in Sagittarius, approximately 3.39 million light years from the solar system. Sagittarius symbolism and mythology. The constellation contains the Arches Cluster, the Quintuplet Cluster with the luminous Pistol Star, the Galactic centre, the radio source Sagittarius A, and a number of very famous deep sky objects, including the Sagittarius Dwarf Elliptical Galaxy, the Sagittarius Dwarf Irregular Galaxy, Barnards Galaxy, the Bubble Nebula, and as many as 15 Messier objects, among them the Sagittarius Star Cloud (Messier 24), the Omega Nebula (Messier 17), Messier 18, the Lagoon Nebula (Messier 8), and the Trifid Nebula (Messier 20). Pi Sagittarii is also sometimes known as Albaldah, from the Arabic blda, which means the town. Egyptian astronomer Al Achsasi al Mouakket designated it Nir al Beldat in his star catalogue Calendarium in the mid-17th century. A transiting planet was spotted orbiting the magnitude 16 eclipsing variable star OGLE-TR-10 (G2V) in 2002. 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. 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 Omega Nebula is an emission nebula in Sagittarius. The cloud is about 600 light years wide and approximately 10,000 light years distant. However, because of its compact nature, M75 can barely be distinguished from a star when viewed in binoculars. 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. The closest complex of regions in W31 is formed by G10.2-0.3 and G10.6-0.4. This was the largest event of its kind seen in the Milky Way since 1604, when the type Ia supernova SN 1604 (Keplers Nova) was observed by the German astronomer Johannes Kepler in the direction of Ophiuchus constellation. It was discovered by the French astronomer Pierre Mchain in 1780. Eratosthenes associated it with Crotus, a mythical creature with two feet and a satyrs tail, who was the nurse to the nine Muses, daughters of Zeus. 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. Quarters are always tight in globular clusters, where the mutual hold of gravity binds together hundreds of thousands of stars in a small region of space. Sagittarius is a masculine sign and ruled by Jupiter, and is balanced and complemented by the opposite sign of Gemini, ruled by Mercury. The Sagittarius Cluster is located near the galactic bulge, the central group of stars in the Milky Way. Set against a backdrop of bright stars, the rust-colored object lies in the constellation of Sagittarius (The Archer), in the southern sky. Hurt, who led the team that confirmed the discovery. This image was taken using the FORS instrument, mounted on ESOs Very Large Telescope. Being half human aligned the centaur with intellect and civility, while the horse end symbolized. A Hubble Space Telescope photo of the planetary nebula Henize 3-1475. It is 8.3 by 8.3 in diameter. The nebulas appearance earned it the nickname Eye of Sauron Nebula. Also catalogued as ESO 456-67, the nebula was discovered by Rudolph Minkowski in 1946. It occupies an area 8.8 arc minutes in size. The next occultation by a planet (Venus) will take place in our lifetime: on February 17, 2035. It has an apparent size of 4.75 by 4.75. They also look a lot alike. It is located about a degree to the east of Messier 8, the more famous and much larger Lagoon Nebula. The two brighter components form a close binary system with an apparent magnitude of 13.28. Alpha Sagittarii is a blue dwarf belonging to the spectral class B8V. What is the flower of Sagittarius? Located 25,000 light years from Earth, the cluster lies only about 100 light years from the Galactic centre. Sagittarius is the 15th largest constellation in the sky. Chiron was wise and skilled not only in the arts of war but also healing and philosophy. Without the interstellar dust in the way, despite its distance it would be a fourth magnitude star, visible to the unaided eye. Sagittarius A* is the leading candidate for the location of the supermassive black hole believed to be at the centre of the Milky Way Galaxy. Sagittarius constellation, Baades Window and the Teapot, photo: NASA, ESA, Z. Levay (STScI) and A. Fujii. Around the year 6300, the system will have moved from Sagittarius to the Corona Australis constellation. Image: ESO. Soft gamma repeaters (SGR) are objects that emit enormous bursts of gamma-rays and X-rays at irregular intervals. NGC 6589 is a reflection nebula that occupies an area of 5.0 by 3.0 in apparent size. The stars are located at different distances from the solar system and are not gravitationally bound. The star cannot be observed in visual bands because less than a billionth of its light in the visible spectrum reaches us, which translates to about 35th visual magnitude. The system is also known by its traditional name, Arkab, from the Arabic carqb, which means hamstring.. Sagittarius is one of the 12 zodiac constellations that was first catalogued by the Greek astronomer Ptolemy in the 2nd century. It is one of the several notable H II regions in Sagittarius. Terzan 5 contains at least 34 and up to 200 milisecond radio pulsars (pulsars with a rotational period of 1-10 miliseconds), including PSR J1748-2446ad, the fastest spinning pulsar known, which rotates 716 times a second with a rotation period of 1.40 miliseconds. It was discovered by William Herschel on May 22, 1784. The Carina-Sagittarius Arm is particularly notable for containing a large number of H II regions, giant molecular clouds and young stars. Sagittarius is an astrological sign transitted by the Sun from approximately November 23rd to December 22nd. The constellation of Sagittarius (which literally means "archer" in Latin, per Britannica) is said to be a centaur or satyr holding a bow and arrow, according to Gods and Monsters. The two stars are separated by 13.4 astronomical units (AU). VX Sagittarii, currently (as of 2017) one of the five largest known stars in the Milky Way, is an evolved red supergiant or hypergiant (M4eIa M10eIa) with a radius between 1,350 and 1,940 times that of the Sun and a mass 12 times solar. 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 located at a distance of 75,700 light years from Earth. While the star is far enough for the supernova itself to be harmless, a long duration gamma-ray burst (LGRB) pointed in our direction could certainly do serious damage to our ozone layer. 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. Sagittarius is one of the largest southern constellations. Sagittarius, the centaur, is the ninth sign in the Zodiac and represents those born between Nov. 22 and Dec. 21. Other stars with confirmed exoplanets include HD 171238 (G8 V), HD 179949 (F8 V), HD 181720 (G1V), HD 187085 (G0V), WASP-67 (K0V), MOA-2011-BLG-293L (M1.5V), MOA-2009-BLG-319L (K8V), HD 181342 (K0III), HD 180902 (K0III/IV), OGLE-TR-56 (G), OGLE-2003-BLG-235L (K5), OGLE-2005-BLG-169L (M), MOA-2007-BLG-192L, and MOA-2007-BLG-400L (M3V). Charles Messier discovered it in 1780 and subsequently included it in his catalogue. It was discovered by William Herschel in 1784. Sigma and Tau Sagittarii mark the handle, Delta, Epsilon, Zeta and Phi Sagittarii form the body of the Teapot, Lambda Sagittarii marks the point of the lid and Gamma-2 Sagittarii marks the tip of the spout. Knowledge is key to these folks since it fuels their broad-minded approach to life. NGC 6578 is a planetary nebula occupying an area of 8 arc seconds. The myth behind Sagittarius actually refers to Crotus, a satyr that lived on Mount Helicon with the Muses. Greek mythology held that both satyrs and centaurs were mostly huge, boorish jerks, but Crotus and Chiron were the exceptions: intelligent, kind, sensitive, and sympathetic to humans. 62 Sagittarii (or c Sagittarii) is an M-type giant at the southwest corner, about 450 light years from Earth. 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). Sagittarius is usually depicted as a centaur holding a bow and arrow. 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 between 18,000 and 19,000 light years distant and has an apparent magnitude of 7.66. The companion star has an apparent magnitude of 5.84 and is located about 359 light years from Earth. Messier 28 is a globular cluster located near Lambda Sagittarii (Kaus Borealis). With a mass of 10,000 solar masses, it is about 10 times more massive than typical open clusters in the Milky Way. It is a 10th magnitude star. It has an apparent magnitude of 10.10 and lies at a distance of 27,700 light years. In astrology, which is not a science, Sagittarius is the ninth sign in the Zodiac and represents those born between Nov. 22 and Dec. 21. The brightest stars in the cluster are 16th magnitude. They guard their hearts carefully because they are highly sensitive individuals that fear being hurt. The nebula was discovered by Edward Charles Pickering on July 15, 1882. A gas giant planet was discovered orbiting the orange dwarf HD 164604 (K3.5Vk) in 2010. Never observed anywhere in the bulge before, this peculiar cocktail of stars suggests that Terzan 5 is in fact one of the bulges primordial building blocks, most likely the relic of a dwarf galaxy that merged with the Milky Way during its very early days. 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. Planetary nebulae are illuminated for around 10 000 years before the central star begins to cool and shrink to become a white dwarf. 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). Image: European Space Agency, A. Riera (Universitat Politecnica de Catalunya, Spain) and P. Garcia-Lario (European Space Agency ISO Data Centre, Spain). The Red Spider Nebula is a planetary nebula that occupies an area of 1.5 arc minutes in the northwestern part of Sagittarius. According to the Babylonians, Sagittarius is associated with the god Pabilsag. Its name is Latin for "archer". This, however, only applies to Mars and it happens very rarely. It has an apparent magnitude of 13 and lies at an estimated distance between 3,000 and 8,000 light years from Earth. The cluster was discovered by William Herschel on August 7, 1784. 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. NGC 6540 is a globular cluster with an apparent magnitude of 9.30, located at a distance of 17,300 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*. HD 190647 (G5IV) has a known exoplanet, discovered in 2007. Edward Emerson Barnard catalogued it as IC 4690 in August 1905. Sagittarius, the ninth astrological sign, symbolizes higher consciousness. Westerhout 31 (W31) is a massive H II region in Sagittarius. M 1-42 is another planetary nebula in the constellation, located at a distance of 10,000 light years from Earth. They have the head and torso of a man, but the bottom half of a hoofed beast. Upsilon Sagittarii is a spectroscopic binary star. V4641 Sagittarii is the fourth known microquasar, discovered after four of the fastest X-ray intensity changes ever seen from a star. Flower: Carnation Like a carnation, those born under the sign of Sagittarius are strong, yet beautiful. 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. People born under the Zodiac sign of Sagittarius, from November 22 to December 21, are said to be magnetic, passionate, adventurous, and intense, according to Allure perfect traits, in fact, to describe the archer figure that represents them. 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 6822 has an apparent magnitude of 9.3 and is approximately 1.63 million light years distant. The constellations symbol is . Delta Sagittarii has a radius 62 times solar, a mass about five times solar, and is 1180 times more luminous than the Sun. It's easy to see why the myths behind Centaurus and Sagittarius often get confused. It is made of clouds of dust and gas that circle Sagittarius A* and fall onto it at exceptionally high velocities, up to 1000 kilometres per second. People born under the Zodiac sign of Sagittarius, from November 22 to December 21, are said to be magnetic, passionate, adventurous, and intense, according to Allure perfect traits, in fact, to describe the archer figure that represents them. The cluster spans 10 light years and has an apparent size of 5 arc minutes. Both centaurs and satyrs were well known to be wild, rowdy, lustful creatures that had little respect for authority and proper manners. The apparent magnitude of Polis A ranges from 3.84 to 3.96. (In 2003, the Canis Major Dwarf Galaxy was discovered and recognized as the nearest neighbour.). Artist conception of the December 27, 2004 gamma ray flare expanding from SGR 1806-20. Located 38,700 light years away, the star is likely a binary system. The constellation has 32 stars with confirmed planets. Messier 55 is another globular cluster in Sagittarius. Crotus, much like Chiron, was a skilled musician and hunter. It occupies an area of 867 square degrees. The three-letter abbreviation, adopted by the International Astronomical Union (IAU) in 1922, is Sgr. 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. About a fifth of the more than 150 globular clusters in the Milky Way have undergone a core collapse. The nebula lies at a distance of 7,800 light years from Earth and has a 16th magnitude central star. Hurt 2, or 2MASS-GC02, is a globular cluster discovered only recently, in 2000. It is not fully understood how planetary nebulae form such a wide variety of shapes and structures; some appear to be spherical, some elliptical, others shoot material in waves from their polar regions, some look like hourglasses or figures of eight, and others resemble large, messy stellar explosions to name but a few. It has an apparent magnitude of 13.5 and can be seen near the star 16 Sagittarii. Collisions between the clusters themselves and cooler molecular clouds of gas contribute to the diffuse X-rays seen in this image. The cluster has an apparent magnitude of 11.29 and lies at a distance of 24,100 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. It has an apparent magnitude that varies from 6.5 to 14.0 over a pulsational period of 732 days. NGC 6544 is a globular cluster located less than a degree southeast of the Lagoon Nebula. Terzan 5 has a mass of about 2 million solar masses and bolometric luminosity 800,000 times that of the Sun. Sagittarius: The Archer Myth based on the original Greek legend Once upon a time in the ancient lands of Greece, long before horses galloped under the weight of humans, there lived the great Chiron, the centaur. It was first discovered by the French astronomer Guillaume Le Gentil in 1747. The cluster lies only 10,400 light years from the Galactic centre. M69 is only 1,800 light years away from M70 and located near the Galactic centre. The centaur is depicted as aiming an arrow toward the heart of the neighbouring constellation Scorpio, represented by the red supergiant star Antares. The constellation name Sagittarius is pronounced /sdtris/. Why Chiron gets credit as the figure in Sagittarius mythology is a bit of a mystery. Its old astronomical symbol is (). It is believed to be associated with the close binary. Individuals born between November 22 and December 21 are known to be Sagittarius individuals. Messier described the object as a large nebulosity containing many stars., Small Sagittarius Star Cloud (Messier 24), image: Thomas Jger (CC BY-SA 4.0). The two-lobed nebula surrounds the central hot white dwarf that produces a hot wind with a speed of 300 km/s. Image: NASA, ESA, STScI, and G. Piotto (Universit degli Studi di Padova), and E. Noyola (Max Planck Institut fr extraterrestrische Physik). This is the Sagittarius horoscope symbol and the character that represents this zodiac sign. Sagittarius sits in the 240-270th degree in the zodiac among Scorpio and Capricorn. It has an apparent magnitude of 12 and with a linear radius of 160 light years it occupies 7.3 of the apparent sky. Messier included it in his catalogue in 1764. Stars orbit the object at speeds greater than those of any other stars found in the Milky Way. The nebulas central star is more than 12,000 times more luminous than the Sun. With Sagittarius . 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 must be observed in infrared wavelengths. The last time this happened was on November 19, 1984, when Venus passed in front of the star, eclipsing it. The nearest star is Ross 154 (V1216 Sagittarii, spectral class M3.5V), located at a distance of only 9.69 light years from Earth. Sagittarians are complex individuals that have a unique perspective on life and relationships. The cluster has an apparent magnitude of 9.5. It is approximately 149 light years distant. The nebula was discovered by Edward Charles Pickering on July 14, 1880. OGLE-2006-BLG-109L (spectral class M0V) has two known exoplanets, suspected analogs of Jupiter and Saturn, discovered in 2008. It has a similar structure to the Small Magellanic Cloud, the dwarf galaxy in the constellation Tucana. Other similar ripples of heated matter thrown out by feisty young stars are dotted across Barnards Galaxy. M22 was originally discovered by the German amateur astronomer Johann Abraham Ihle in 1665. Eta Sagittarii is another multiple star system in Sagittarius. The star is approximately 89.1 light years distant from Earth. The planetary nebula Henize 3-1475, also catalogued as IRAS 17423-1755, lies at an approximate distance of 18,000 light years from Earth. Myth of Sagittarius. Peony Star, or WR 102ka, is one of the most luminous stars known in our galaxy. The cause of these outbursts is not understood, but the rapidity with which they rise and fall indicates that they are occurring near the event horizon, or point of no return, around the black hole.
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