Phi Cassiopeiids are very slow, with an entry velocity of approximately 16.7 kilometers per second. [34], NGC 457 is another open cluster in Cassiopeia, also called the E.T. This asterism is formed by five bright stars; Epsilon, Ruchbah (Delta), Gamma, Schedar (Alpha Cassiopeiae) and Caph (Beta Cassiopeiae). [22], The other prominent open clusters in Cassiopeia are NGC 457 and NGC 663, both of which have about 80 stars. Two Messier objects, M52 (NGC 7654) and M103 (NGC 581), are located in Cassiopeia; both are open clusters. In the equatorial coordinate system, the right ascension coordinates of these borders lie between 00h 27m 03s and 23h 41m 06s, while the declination coordinates are between 77.69° and 46.68°. It has an apparent magnitude of 10.5. It was nicknamed the Pacman Nebula because of its resemblance to the character from the popular video game. The main stars of Cassiopeia make its tail, Andromeda and Triangulum form its body, and Aries makes its head. [10][c] High in the northern sky, it is circumpolar (that is, it never sets in the night sky) to viewers in the British Isles, Canada and the northern United States. 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. USS Cassiopeia (AK-75) was a United States Navy Crater-class cargo ship named after the constellation. NGC 457 is looser, and its brightest member is Phi Cassiopeiae, a white-hued supergiant star of magnitude 5.0. Une simple … It has been reported to show eclipses of less than 0.1 magnitudes with a period of 2 years and 1 month. Cassiopeia is famous for its distinctive W shape, an asterism formed by five bright stars in the constellation. The star was used as a navigational reference point by astronauts. It is 99.4 ± 0.4 light-years from Earth. The primary is a yellow-hued star of magnitude 3.5 and the secondary is a red-hued star of magnitude 7.5. La déesse vexée et en olèe déida de se venge. The amount of X-ray radiation that it emits is 10 times higher than that of other B or Be class stars. Epsilon Cassiopeiae is a bright blue-white B-class giant, approximately 440 light years distant. It is notable for being the brightest astronomical radio source in the sky. The Pacman Nebula (NGC 281), photo: X-ray: NASA, CXC, CfA, S.Wolk et al; Optical: NSF, AURA, WIYN, Univ. The proper names of stars that have been officially approved by the International Astronomical Union (IAU) are Achird, Caph, Castula, Fulu, Nushagak, Ruchbah, Schedar, and Segin. The Cassiopeia constellation gets its name … [5][6], Cassiopeia has been variously portrayed throughout her history as a constellation. Achird has a dimmer companion, an orange K-class dwarf with an apparent magnitude of 7.51, located 11 arc seconds away. Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivaled 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 about 99 light years distant and has an apparent magnitude that varies between 2.68 and 2.74. Philippe. Cassiopée est une des 88 constellations du ciel, visible dans l' hémisphère nord. The nebula is 9,500 light years from Earth. At least three of Dôn's children also have astronomical associations: Caer Gwydion ("The fortress of Gwydion") is the traditional Welsh name for the Milky Way, and Caer Arianrhod ("The Fortress of Arianrhod") being the constellation of Corona Borealis. [8] These include the Lapps, for whom the W of Cassiopeia forms an elk antler. Elle est circumpolaire aux latitudes de la France métropolitaine, c'est-à-dire qu'elle ne passe jamais sous l'horizon. celestron.com. [20], Gamma Cassiopeiae is the prototype Gamma Cassiopeiae variable star, a type of variable star that has a variable disc of material flung off by the high rotation rate of the star. Eta Cassiopeiae is the nearest star in Cassiopeia to our solar system, lying only 19.4 light years away. In the (sub)tropics it can be seen at its clearest from September to early November, and at low southern, tropical, latitudes of less than 25°S it can be seen, seasonally, low in the North. Cassiopeia obţinute în dicţionarul română - franceză la Glosbe, dicţionar online, gratis. It is a spectroscopic binary, with an orbital period of 203.59 days and a companion with a calculated mass about the same as the Sun. In Chinese astronomy, the stars forming the constellation Cassiopeia are found among three areas: the Purple Forbidden enclosure (紫微垣, Zǐ Wēi Yuán), the Black Tortoise of the North (北方玄武, Běi Fāng Xuán Wǔ), and the White Tiger of the West (西方白虎, Xī Fāng Bái Hǔ). Cassiopée (mythologie) Dans la mythologie grecque, épouse orgueilleuse de Céphée et mère d'Andromède, reine d'Éthiopie. Messier 52 is an open cluster, approximately 5,000 light years distant. Cassiopeia A is a supernova remnant and the brightest extrasolar radio source in the sky at frequencies above 1 GHz. Cassiopeia belongs to the Perseus family of constellations, along with Andromeda, Auriga, Cepheus, Cetus, Lacerta, Pegasus, Perseus, and Triangulum. [17] Magnitude 8.9 yellow dwarf companion (B) is widely separated; companions (C and D) are closer and magnitudes 13 and 14 respectively. This depiction is from Augustin Royer's 1679 atlas.[5]. Zeta Cassiopeiae (Fulu[24]) is a suspected slowly pulsating B-type 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. Barnard in 1883. However, she was saved in the last minute by the Greek hero Perseus, who happened to be passing by, saw Andromeda and rescued her from the monster. NGC 185 is a dwarf spheroidal galaxy, approximately 2.08 million light years from Earth. It has a green-hued primary of magnitude 5.0 and a blue-hued secondary of magnitude 7.3. Sometimes the star is also known as Ksora. Omicron Cassiopeiae is a triple star and the primary is another γ Cassiopeiae variable. Delta Cassiopeiae is an eclipsing binary star with a period of 460 days. The primary is an orange-hued giant star of magnitude 4.7 and the secondary is a close pair of stars that appears to be of magnitude 9.0. Every day, Safran Electronics & Defense helps airlines, operators and Original Equipment Manufacturers by collecting, processing and analysing an increasing amount of flight data. It also hosts the red supergiant PZ Cassiopeiae, which is one of the largest known stars with an estimate of 1,190–1,940 R☉ and is also a semiregular variable. Cassiopée est une des 88 constellations du ciel, visible dans l'hémisphère nord. The yellow-white star is 28 times brighter than the Sun and four times the size. Rho Cassiopeiae is suspected to already have exploded as a supernova because it has used up most of its nuclear fuel, but if this is the case, the light from the explosion has yet to reach us. The orbital period is roughly 204 days. The star’s traditional name, Ruchbah, comes from the Arabic rukbah, which means “the knee”. Iota Cassiopeiae is a triple star 142 light-years from Earth. Like NGC 185, it is a satellite galaxy of the Andromeda Galaxy (Messier 31) and a member of the Local Group of galaxies. Cassiopeia (listen) is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivaled beauty. Messier 103 (NGC 581) – Atlas Image mosaic courtesy of 2MASS, UMass, IPAC-Caltech, NASA, NSF. [13] All five are prominent naked eye stars, three are noticeably variable, and a fourth is a suspected low amplitude variable. NGC 281 Dans la direction de la constellation de Cassiopé La nébuleuse PACMAN s’étend sur 35’ d’arc (80 années-lumière), et avec une magnitude 7, elle est visible avec un télescope amateur (du moins en dehors des agglomérations). Zum Hauptinhalt wechseln. 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. NGC 457 is fairly rich; it is a Shapley class e and Trumpler class I 3 r cluster. While parts of the constellation technically rise above the horizon to observers between the latitudes of 12°S and 43°S, stars within a few degrees of the horizon are to all intents and purposes unobservable. [4] She was forced to wheel around the North Celestial Pole on her throne, spending half of her time clinging to it so she does not fall off, and Poseidon decreed that Andromeda should be bound to a rock as prey for the monster Cetus. It has an apparent magnitude of 3.34. Kappa, Eta, and Mu Cassiopeiae formed a constellation called the Bridge of the Kings; when seen along with Alpha and Beta Cassiopeiae, they formed the great chariot Wang-Liang. Slightly dimmer and more distant NGC 147 is a magnitude 9.3 elliptical galaxy, like NGC 185 it is an elliptical of type E0; it is 2.3 million light-years from Earth. Christophe Guillarmé Inspiré par la légende de Cassiopé, Christophe Guillarmé en a fait le thème de sa collection prêt-à-porter automne-hiver 2020/2021. NGC 663 is both closer, at 8200 light-years from Earth, and larger, at 0.25 degrees in diameter. It exhibits irregular variations in brightness, which ranges between 2.20 magnitudes and 3.40 magnitudes. The Heart Nebula and the Soul Nebula are two neighboring emission nebulae about 7,500 light-years away. It has around 450 times the Sun's diameter and 17 times its mass, having begun life 45 times as massive as the Sun. It was discovered by American astronomer E.E. [22], There are two supernova remnants in Cassiopeia. Nicknamed the W constellation, Cassiopeia is easily recognizable for the prominent W asterism formed by its five brightest stars. One look at Medusa’s head turned them all into stone. The five brightest stars of Cassiopeia – Alpha, Beta, Gamma, Delta, and Epsilon Cassiopeiae – form the characteristic W-shaped asterism. Segin is notable for showing extremely weak spectral absorptions of helium. celestron.com. The star’s estimated age is 65 million years and it is at the end of the hydrogen-fusing cycle. It was Poseidon who placed Cassiopeia and Cepheus in the sky. Schedar (Shedir) – α Cassiopeiae (Alpha Cassiopeiae). [37], Cassiopeia also contains part of the closest galaxy group to our Local Group, the IC 342/Maffei Group. Cassiopée (constellation) Касиопея (съзвездие) Pour la dixième fois, c'est sur Cassiopée. regade la constellation de persée (au nord est juste sous le w de cassiopé) j'ai mis une carte sur mon site : [..] > on peut la voir a l'oeil nu ? NGC 147 is another dwarf spheroidal galaxy in Cassiopeia, approximately 2.53 million light years distant. 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). Camera : Canon EOS 500D Lens : Canon EF-S 18-55mm f/3.5-5.6 IS II The charioteer's whip was represented by Gamma Cassiopeiae, sometimes called "Tsih", the Chinese word for "whip". Cepheus turned to an oracle for help and the oracle told him that, in order to appease Poseidon, he and Cassiopeia had to sacrifice their daughter Andromeda to the sea monster. Cassiopée Constellation is on Facebook. [26] Its magnetic field and wind of particles creates a visible bow shock 4 light-years ahead of it, colliding with the diffuse, and usually invisible, interstellar gas and dust. OpenSubtitles2018.v3 OpenSubtitles2018.v3. Kappa Cassiopeiae is a blue supergiant of spectral type BC0.7Ia that is some 302,000 times as luminous as the Sun and has 33 times its diameter. The only Delta Scuti variable brighter than Caph is Altair, the brightest star in the constellation Aquila and 12th brightest star in the sky. [18], Beta Cassiopeiae, or Caph (meaning "hand"), is a white-hued star of magnitude 2.3, 54.7 ± 0.3 light-years from Earth. The star’s other traditional names are al-Sanam al-Nakah and al-Kaff al-Khadib. A rich section of the Milky Way runs through Cassiopeia, containing a number of open clusters, young luminous galactic disc stars, and nebulae. Poseidon was married to one of the nymphs, Amphitrite. She is usually depicted on her throne, still combing her hair. At magnitude 2.2, Alpha Cassiopeiae, or Schedar, is generally the brightest star in Cassiopeia, though it is occasionally outshone by the variable Gamma Cassiopeiae, which has reached magnitude 1.6. The Chukchi of Siberia similarly saw the five main stars as five reindeer stags. Gefällt 730 Mal. In the process, however, the king and queen were also killed because they did not look away from the monster’s head in time. He photographed the galaxy using the Crossley telescope (36-inch/910mm), the reflecting telescope located at Lick Observatory in California. It was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy. La pointe centrale du W pointe très approximativement en direction de l'étoile polaire, α Ursae Minoris. celestron.com. It was originally discovered by John Herschel in 1829. Cassiopeia; Medien in der Kategorie „Cassiopeia (constellation)“ Folgende 96 Dateien sind in dieser Kategorie, von 96 insgesamt. Its head was composed of Lambda, Kappa, Iota, and Phi Andromedae; its hump was Beta Cassiopeiae; its body was the rest of Cassiopeia, and the legs were composed of stars in Perseus and Andromeda. 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. The galaxies Maffei 1 and Maffei 2 are located just to the south of the Heart and Soul Nebula. The system is 19 light-years from Earth. Prime entdecken Hallo! [29] Between 240,000 and 270,000 times as luminous as the Sun, it is around 9,160 light-years distant from Earth. They were enraged by Cassiopeia’s comments and appealed to Poseidon to punish Cassiopeia for her boastfulness. In mythology, Cassiopeia was the wife of King Cepheus (represented by the neighbouring constellation Cepheus in the sky) of Ethiopia. The galaxy is classified as a type 2 Seyfert galaxy. It lies in the first quadrant of the northern hemisphere (NQ1) and can be seen at latitudes between +90° and -20°. The constellation was first catalogued by the Greek astronomer Ptolemy in the 2nd century, along with other constellations in the … Rho Cassiopeiae belongs to a very rare class of stars, the yellow hypergiants, only seven of which are currently known in the Milky Way Galaxy. NGC 281 is an H II region, a large gas cloud in which star formation has recently taken place. It has a temperature of about 50 million degrees Fahrenheit. Alpha Cassiopeiae is located at the bottom right of the W asterism. The Chinese astronomers saw several figures in what is modern-day Cassiopeia. Cassiopée est une des 88 constellations visible dans l'hémisphère nord. In the sky, the main stars of Cassiopeia form a W shape, which is easy to recognize, but does not really look anything like a person sitting in a chair. [19] It is a Delta Scuti variable with a small amplitude and period of 2.5 hours. This new four-year partnership will allow e-POP to collect valuable space weather data at a rate 3-4 times greater than has been done previously. It has an overall magnitude of 6.4 and is approximately 10,000 light-years from Earth, lying in the Perseus arm of the Milky Way. NGC 7789 is an open star cluster, approximately 7,600 light years distant. This is variously said to represent a woman's hand dyed red with henna, as well as the bloodied hand of Muhammad's daughter Fatima. Cluster, the Owl Cluster, and Caldwell 13. Folk / Folklore, Pop Reluctantly, they did so, leaving Andromeda chained to a rock for the monster to find. Fourteen star systems have been found to have exoplanets, one of which—HR 8832—is thought to host seven planets. It is similar to the Sun; a yellow-white G-class hydrogen fusing dwarf, slightly cooler than the Sun with a surface temperature of 5730 Kelvin. Covering 598.4 square degrees and hence 1.451% of the sky, Cassiopeia ranks 25th of the 88 constellations in area. [16], Epsilon Cassiopeiae has an apparent magnitude of 3.3. Gamma Cassiopeiae is a spectroscopic binary star, an optical double with a magnitude 11 companion about two arc seconds away, one with a mass comparable to that of the Sun. The shell of matter expelled from the star is moving at 4,000 kilometres (2,500 mi) per second; it has a temperature of 30,000 kelvins on average. Alpha Cassiopeiae, traditionally called Schedar (from the Arabic Al Sadr, "the breast"), is a four-star system. It has an apparent magnitude of 5.0 and can be seen with binoculars. [5], Another Arab constellation that incorporated the stars of Cassiopeia was the Camel. Касиопея превод на речника български френски на Glosbe, онлайн речник, безплатно. palm of the Pleiades or reaching from the Pleiades, the famous cluster in Taurus constellation). 2011-06-15 23-50-00-stars.jpg 4.216 × 5.425; 22,47 MB. This is giving the star an oblate spheroid shape with an equatorial bulge that is 24% larger than the polar radius.

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