The orbital period is roughly 204 days. Her boast angered Poseidon, god of the sea, who sent a sea monster (Cetus the Whale) to ravage the kingdom. The Cassiopeia constellation gets its name … Messier 52 (NGC 7654) – Atlas Image mosaic courtesy of 2MASS, UMass, IPAC-Caltech, NASA, NSF. Fast Facts . Cassiopeia is one of the most recognizable northern constellations, with its five brightest stars forming a distinct W. It is one of the several northern circumpolar constellations, visible throughout the year from northern latitudes. They have been linked together by people to depict mythological characters, animals and objects. Poseidon was married to one of the nymphs, Amphitrite. The constellation was first catalogued by the Greek astronomer Ptolemy in the 2nd century, along with other constellations in the Perseus family (except Lacerta). The cluster is also known as Caroline’s Rose or The White Rose because the loops of stars in it resemble the pattern of rose petals. Most of the constellations were identified long ago by the stargazers of Ancient Babylon and Egypt. Caph has a mean apparent magnitude of 2.27. Small patterns of stars within a constellation are called asterisms. As punishment for this affront, Poseidon sent a sea monster Cetus to destroy Aethiopia. Its luminosity varies between magnitudes 4.75 and 5.5. Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty.Cassiopeia was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy, and it remains one of the 88 modern constellations today.It is easily recognizable due to its distinctive 'W' shape, formed by five bright stars. It is 13 arc minutes (19 light years) in diameter. The constellation of Cassiopeia is named after a mythical queen from ancient Greece. Constellations are patterns of stars in the sky which astronomers use to help them pinpoint individual stars. The neighboring constellations are Andromeda, Camelopardalis, Cepheus, Lacerta, and Perseus. Here are several fascinating facts you probably don’t know about stars. The story behind the name: Cassiopeia is named after the queen of a country on the northern coast of Africa, Aethiopia (not modern Ethiopia). It is a blue star (spectral type B0.5 IVe), about 610 light years distant, with a luminosity 40,000 times that of the Sun, and having about 15 solar masses. The constellation of Aquarius is among the oldest of the recognized constellations of the zodiac – the Sun’s apparent path. It was nicknamed the Pacman Nebula because of its resemblance to the character from the popular video game. Cassiopeia constellation map by IAU and Sky&Telescope magazine. Cassiopeia is a constellation found in the northern sky. To pacify the monster, Cassiopeia’s daughter, Princess Andromeda, was left tied to a rock by the sea. A constellation is a grouping of stars that represents one of the 88 divisions of the celestial sphere as defined by the International Astronomical Union. The largest constellation by area is Hydra which is 3.16% of the sky. Together with the stars Alpheratz in Andromeda and Algenib in Pegasus, Caph was known as one of the Three Guides; three bright stars marking the equinoctial colure, the imaginary line from Caph to Alpheratz to the celestial equator, at a point where the Sun crosses it at each spring and autumn equinox. Gamma Cassiopeiae is the central star in the W shape and currently the brightest star in the constellation. The constellation of Cassiopeia. Constellations are groups of stars in the sky, which have been grouped together to form patterns representing the history of mankind, including animals, mythological characters, and objects. It has an apparent magnitude of 10.5. The galaxy is classified as a type 2 Seyfert galaxy. It has a temperature of about 50 million degrees Fahrenheit. She was the wife of King Cepheus and the mother of Princess Andromeda. The explosion occurred at an approximate distance of 11,000 years from Earth and the first light of the supernova is believed to have reached us about 300 years ago. NGC 185 is a dwarf spheroidal galaxy, approximately 2.08 million light years from Earth. (Wikipedia… This constellation which is situated in the northern sky is named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivaled beauty. The star’s traditional name, Schedar, is derived from the Arabic şadr, which means “breast.” The name refers to the star’s position, marking Cassiopeia’s heart. In Greek mythology, Aries is the ram whose fleece became the Golden Fleece. Constellations were named after objects, animals, and people long ago. Cassiopeia A, photo: Oliver Krause, George H. Rieke, Emeric Le Floch, Karl D. Gordon, Eiichi Egami, Erick Young, John Bieging, Joannah L. Hinz (Steward Observatory), Stephan M. Birkmann, Sascha P. Quanz (Max Planck Institut fur Astronomie), John P. Hughes (Rutgers University), Dean C. Hines (Space Science Institute). The cloud of material ejected in the explosion is about 10 light years across and is expanding at the rate of 4,000-6,000 km/s. Achird has a dimmer companion, an orange K-class dwarf with an apparent magnitude of 7.51, located 11 arc seconds away. It is a satellite galaxy of the Andromeda Galaxy (Messier 31) and forms a physical pair with NGC 185. Schedar (sometimes Shedir) is an orange giant of the spectral type K0IIIa, approximately 228 light years distant. The brightest star in the constellation is Schedar, Alpha Cassiopeiae. The star was used as a navigational reference point by astronauts. Interesting Constellations Facts: The International Astronomical Union divided the celestial sphere into 88 constellations in 1922, with the help of Henry Norris Russell, an American astronomer. It is approximately 11,650 light years distant and one of the most luminous stars known. Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivaled beauty. In this list, 88 constellations are currently recognized. It is the strongest radio source in the sky outside the solar system and was one of the first radio sources to be discovered, in 1947. As such, it is visible for most part of the year from the northern hemisphere. Its apparent magnitude varies from 4.1 to 6.2. Astronomy; 18 Aug 2016. With an apparent magnitude that varies from 1.6 to 3.0, it sometimes outshines its neighbours Schedar, Caph and Segin to become the constellation’s brightest star. Zeta Cassiopeiae is classified as a SPB variable star (Slow Pulsating B star), the first one of its kind discovered to have a magnetic field. It is in the range from 2.20 to 2.23 magnitudes. Achird is among the fainter stars in the constellation, yet what makes It is currently in the process of cooling down and will eventually become a red giant. Segin – ε Cassiopeiae (Epsilon Cassiopeiae). The age of the cluster is estimated to be about 25 million years. Statistics: The sky was divided into 88 specific constellations in 1922 and this is maintain through to today. How to find open star clusters NGC 457, M103 and Caldwell 10 in Cassiopeia. Aquarius was one of the 48 constellations first listed by the 2 nd-century astronomer, Ptolemy. Messier 103 (NGC 581) – Atlas Image mosaic courtesy of 2MASS, UMass, IPAC-Caltech, NASA, NSF. NGC 281 is an H II region, a large gas cloud in which star formation has recently taken place. Interesting Facts about Constellations. It was the last object Charles Messier entered into his catalogue. The Pacman Nebula, named after its resemblance to the old video game character, also lies within the constellation. Messier 103 is another open cluster in Cassiopeia. Andromeda Mythology. A constellation is an area on the celestial sphere in which a group of visible stars forms a perceived outline or pattern, typically representing an animal, mythological person or creature, or an inanimate object.. Related Videos. The constellation is visible in some northerly regions of the Southern hemisphere in late spring. The boundary of the Cassiopeia constellation contains 14 stars that host known exoplanets. 90 stars are clearly visible, the largest and brightest in the 5. It belongs to the spectral class A5. It is one of the 48 Greek constellations, first listed in Claudius Ptolemy’s Almagest in the 2nd century CE. We're going to provide you with the latest and most accurate facts about constellations from scientific sources. Characteristics of Cassiopeia The constellation can be found covering 598.4 square degrees, which translates to 1.451% of the visible sky. The Andromedids meteor shower which occurs every November is named after Andromeda as it appears to emanate from the constellation. It is notable for being the brightest astronomical radio source in the sky. It was named after a queen in Greek mythology called Cassiopeia. The sea god obliged and sent Cetus, a sea monster represented by the constellation Cetus (the Whale), located in the same region of the sky, to ravage the coast of Cepheus’ kingdom. Most constellations are seasonal, although there are some that can be seen at certain times of the year. Reluctantly, they did so, leaving Andromeda chained to a rock for the monster to find. Today, it is a member of the family of the 88 modern day constellations. Beta Cassiopeiae, or Caph, is either a subgiant or giant star belonging to the spectral type F2 III-IV, approximately 54.5 light years distant. Perseus follows Cassiopeia … Cassiopeia is easily recognized by its five brightest stars that form a "W" shape in the northern sky. Cassiopeia is one of the most recognizable constellations in the night sky, and being circumpolar can be seen all year round from northern latitudes, as well as from some regions in the Southern hemisphere (-20°) in late spring. Cassiopeia, in astronomy, a constellation of the northern sky easily recognized by a group of five bright stars forming a slightly irregular W. It lies at 1 hour right ascension and 60 north declination. Fun Facts About Constellations. Cassiopeia Constellation Facts. Many see a hand and sometimes moose antlers. Segin is notable for showing extremely weak spectral absorptions of helium. It has an apparent magnitude of 3.34. The star’s traditional name, Ruchbah, comes from the Arabic rukbah, which means “the knee”. Constellations are made up of bright stars appearing close to each other in the sky. It contains a large amount of ionised atomic hydrogen (H II) which is lit by the ultraviolet light of young, hot, blue stars. Cassiopeia is one of the 88 modern constellationswe see today. Once, she boasted that she was more beautiful than the Nereids. Cassiopeia is visible all year in the Northern hemisphere. It was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy. It undergoes enormous outbursts roughly every 50 years, resulting in change in luminosity. Delta Cassiopeiae is an eclipsing binary star with a period of 460 days. NGC 281 – the Pacman Nebula, image: Wikimedia Commons/Hewholooks (CC BY-SA 3.0). Delta Scuti variables, which are also known as Dwarf Cepheids, Al Velae or Al Velorum stars, typically show fluctuations in luminosity due to both radial and non-radial pulsations on their surface. The distinct “W” shape is enough for an amateur too to identify Cassiopeia in the sky. The word "constellation" comes from a Latin term meaning "set with stars." Cepheus was the husband of Cassiopeia and the father of Andromeda. The constellations you can see at night depend on your location on Earth and the time of year. Cassiopeia – located in the Northern Hemisphere, due to this position, residents of mid-latitudes have the opportunity to admire the star cluster throughout the year, it is best seen in the autumn. In ancient times, that gave the constellations of the zodiac special significance. CASS-ee-uh-PEE-uh. Zeta Cassiopeiae is a blue-white subgiant (spectral type B2IV), approximately 600 light years distant. 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