The stars and clusters in the Sagittarius Star Cloud are part of the Sagittarius or Sagittarius-Carina spiral arms of the Milky Way. Before that, Mercury occulted the star on December 5, 1865. It has a radius of 0.95 arc minutes. The Omega Nebula is an emission nebula in Sagittarius. At the time of discovery, LBV 1806-20 was thought to be the most luminous and most massive star ever discovered. 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. The constellation has 32 stars with confirmed planets. The cluster has a visual magnitude of 8.06 and lies at a distance of 19,600 light years from Earth. Eta Sagittarii is another multiple star system in Sagittarius. The stars are located at different distances from the solar system and are not gravitationally bound. 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. NGC 6544 is a globular cluster located less than a degree southeast of the Lagoon Nebula. (The other three are Messier 15 in the constellation Pegasus, Palomar 6 in Ophiuchus and NGC 6441 in Scorpius.). Mythology And Facts About The Idealistic Sagittarius The birthday of a Sagittarius-born will always fall between November 22nd and December 21st. The nebula is in fact a combination of an emission nebula (the lower part), a reflection nebula (the upper part) and an open cluster. The cluster is a relatively large and bright one, with an apparent magnitude of 7.42. The last time this happened was on November 19, 1984, when Venus passed in front of the star, eclipsing it. Sagittarius is the 15th largest constellation in the sky. Terzan 7 is the brightest of the six globulars discovered by Agop Terzan in 1968. They are believed to be a type of magnetar. 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). By 1999, the star became invisible in optical wavelengths as a result of being obscured by a very thick shell of dust. Crotus, much like Chiron, was a skilled musician and hunter. Sagittarius is an astrological sign transitted by the Sun from approximately November 23rd to December 22nd. NGC 6717 is a globular cluster 23,100 light years away. The next occultation by a planet (Venus) will take place in our lifetime: on February 17, 2035. The numbers 1806-20 indicate its position in the sky (right ascension and declination). 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. It is one of only four star systems known to be hydrogen-deficient, which makes it difficult to classify U Sgr. Sagittarius constellation lies in the southern sky. Ross 154 is a red dwarf only 9.68 light years away from the solar system. 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. The Gamma designation used to be shared by two star systems in Sagittarius, Gamma-1 and Gamma-2, which were separated by 0.86 in the sky. 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. 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. It does not really have the structure of a spiral. NGC 6528 is another globular cluster, located just to the southwest of NGC 6522. Sagittarius has seven stars brighter than magnitude 3.00 and three stars located within 10 parsecs (32.6 light years) of Earth. It must be observed in infrared wavelengths. The cluster is nine light years in radius, has an apparent magnitude of 7.5, and is approximately 4,900 light years distant. Located in the Galactic centre region, the Pistol Star lies approximately 25,000 light years from our solar system. It is a red supergiant located about 10,000 light years from Earth, with an apparent magnitude varying between 8.5 and 11.The stars diameter is 1,460 times the diameter of the Sun. Delta Sagittarii is a multiple star system approximately 306 light years distant in the constellation Sagittarius. The Delta Sagittarii system is known in fiction from William R. Forstchens 1969 novel Into the Sea of Stars. It was discovered by the French astronomer Nicolas Louis de Lacaille in 1751 and included by Messier in his catalogue in 1778. It was discovered by the French astronomer Pierre Mchain in 1780. This, however, only applies to Mars and it happens very rarely. NGC 6589 is a reflection nebula that occupies an area of 5.0 by 3.0 in apparent size. This story does indeed refer to a constellation myth, but it's actually the myth behind the constellation Centaurus, not Sagittarius. Each zodiac sign has a special symbol, or glyph, that's associated with the mythology behind it. Messier 21 is another open star cluster in Sagittarius. They guard their hearts carefully because they are highly sensitive individuals that fear being hurt. The cluster contains some of the brightest, most massive stars in our galaxy. The star lies at a center of a planetary nebula, formed after the stars red giant stage about 8,300 years ago. NGC 6818 is a magnitude 10 planetary nebula in Sagittarius. Polis is about 3,912 light years distant from Earth. Sagittarius is one of the 12 zodiac constellations that was first catalogued by the Greek astronomer Ptolemy in the 2nd century. It is less that 3 million years old, but it has shed a lot of its initial mass and is expected to end its life in a supernova or hypernova event in the next few million years. The brightest stars in the cluster are 16th magnitude. This is unusually young for such a cluster. It is one of the constellations of the zodiac. 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. Ancient Greeks on the other hand had tremendous respect for horses. This beautiful image features the globular star cluster M75. NGC 6530 is an open cluster within the Lagoon Nebula. It has an absolute magnitude of -11 and a luminosity about 2 million times that of the Sun. A gas giant planet was discovered orbiting the orange dwarf HD 164604 (K3.5Vk) in 2010. The constellations symbol is . Sagittarians are complex individuals that have a unique perspective on life and relationships. 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. According to the Babylonians, Sagittarius is associated with the god Pabilsag. In honor of Chiron's sacrifice, Zeus created the constellation Sagittarius in his likeness. It is located about 50,000 light years from the centre of the Milky Way. 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 origin of Eta Sagittariis proper name Sephdar is unknown. (Flare stars are typically dim red dwarfs or less massive brown dwarfs.). The cluster was discovered by Charles Messier in 1778. VX Sagittarii lies at an approximate distance of 5,150 light years from Earth. The sign is represented by the toxophilite or a centaur, which is half human and half pony. Successive generations of stars have built up the metallic abundances we see today. The globular cluster Messier 54 lies at the core of the galaxy. First discovered by amateur Japanese astronomer, Yukio Sakurai, in 1996, and noted as a nova-like object, Sakurais discovery turned out to be far more interesting than the supernova he initially supposed it to be. Studying the makeup of stars in globular clusters like M69 has helped astronomers trace back the evolution of the cosmos. Sometimes it is also called the Sagittarius I Dwarf or Sagittarius Dwarf Spheroidal. The nebula expands at the velocity of about 32 km/s and occupies an area of 44 arc seconds. It has an apparent magnitude of 3.97 and is approximately 170 light years distant. 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 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. Sagittarius is one of the 88 modern constellations, . It has an apparent magnitude of 7.6 and is 25,800 light years distant from Earth and about 3,800 light years away from the Galactic centre. Return from Sagittarius Myth to the Constellation Myths page. It is 15-20 light years in radius and contains about 150 stars. 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). The cluster lies only 10,400 light years from the Galactic centre. Stellar corpses in this image also emit X-rays as either neutron stars or black holes in binary systems. The Sagittarius Cluster is located near the galactic bulge, the central group of stars in the Milky Way. It is approximately 96.1 light years distant. The stars temperature is also variable and changes from about 2,500 K to 3,500 K, which is unprecedented in a star of this type. Emerson/VISTA. It goes by many different names: Omega Nebula, Horseshoe Nebula, Lobster Nebula, Swan Nebula, Checkmark Nebula, and Sharpless 45. Also discovered were more than two thousand other X-ray sources and huge lobes of 20 million-degree Centigrade gas (the red loops in the image at approximately the 2 oclock and 7 oclock positions). Sagittarius constellation has its roots in Sumerian mythology. Ascella also has a dim companion 75 arc seconds away. 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. Image: Smithsonian Institution, NASA/CXC/UMass Amherst/Q.D.Wang et al. Sagittarius is Latin for "archer," and since ancient times the constellation has been represented as a creature wielding a bow and arrow. 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. The cluster can be seen only 0.8 degrees to the southeast of Delta Sagittarii. The nebula is an H II region originally discovered by the Swiss astronomer Jean-Philippe Loys De Chseaux in 1745.