2.68), Segin (Epsilon Cas, mag. IC59 & IC63: The Gamma Cassiopeiae Nebulae Gamma Cassiopeiae, the middle star of the famous W-shaped constellation, is a hot giant with a surface temperature of 25,000°C (compared to 5,500°C for our Sun) and a mass fifteen times our Sun's. Gamma Cassiopeiae is an eruptive variable star that serves as a prototype of a class of stars, the Gamma Cassiopeiae variable stars. Stretching across an area of 598 square degrees, it is the 25th constellation in size. 2.84 – 2.92), Pleione in the Pleiades cluster in Taurus (mag. Please take a deep breath and dive in together with me if you have not done it already. Achernar was only recognized as a Be star in 1976. Typically, they are fast spinning class B subgiants, giants or sometimes main sequence stars, that show brightness variations with larger amplitudes than other Be stars. Circumpolar in the northern hemisphere, Cassiopeia has been known to observers since ancient times. I really like this ‘subject’ … and you did a great job on it. Gamma Cassiopeia Nebula – kaufen Sie dieses Foto und finden Sie ähnliche Bilder auf Adobe Stock Während beim etwas helleren Nebel IC 63 der rötliche Emissionsanteil überwiegt, dominieren beim blasseren IC 59 die bläulichen Reflexionsanteile. I believe that the information on my page should also give you a view on the equipment which I would recommend or currently use for purouses of the hobby. Gamma Cassiopeiae is located in the northern constellation Cassiopeia. Schedar and other bright stars of Cassiopeia lie in a rich field of the Milky Way and can be used to find a number of bright deep sky objects. 8 Celestron scope. Best Solar 2018. The decretion disk causes both brightness variations and hydrogen emission lines in the star’s spectrum. Imaging cameras:ZWO ASI183MM-Cool, ZWO ASI1600MM-Cool. The “e” suffix indicates hydrogen emission lines in the star’s spectrum. Their brightness varies with an amplitude of about a magnitude. These lines are caused by a circumstellar disk of material lost from the star. Both nebulae lie at an approximate distance of 610 light years. This is the gamma-Cassiopeia Nebula. Gamma Cassiopeiae underwent two such events in 1935-36 and 1939-40, brightening to above magnitude +2.0, then rapidly dimming to magnitude +3.4. Reply . Gamma Cassiopeiae is an eruptive variable star, whose apparent magnitude changes irregularly between +1.6 and +3.0. Still in the Dark. Cassiopeia is home to many interesting stars. I have only Ha ‘detail’ on it . From Redmond , Gamma Cassiopeiae Nebula is visible all night because it is circumpolar.It will be highest in the sky at 00:31, 76° above your northern horizon. The entire constellation is visible from locations between the latitudes 90° N and 20° S. The 10 brightest stars in Cassiopeia are Gamma Cassiopeiae (mag. 3.44), Fulu (Zeta Cas, mag. Complex nebula to capture (only mag. 3.4 – 3.97), and 27 Canis Majoris (mag. The star Gamma Cassiopeiae unleashes the energy of 34,000 Suns, it adds. With an apparent magnitude of 10, they are quite faint. Gamma Cassiopeiae, also known as Navi, is the prototype Gamma Cassiopeiae variable star, a type of star that has a variable disc of material flung off by the high rotation rate of the star. The companion is believed to be more evolved than the primary and to have transferred some of its mass to the brighter star during an earlier evolution phase. These stars exhibit irregular brightness variations over periods of decades. Dies entspricht einer Oberflächentemperatur von circa 6800 K, während ein ungestörter B-Stern eine Oberflächentemperatur von 10.000 bis 25.000 K zeigt. Close. Gamma Cassiopeiae Nebula Contains: IC 63 , gamma Cas nebula , IC 59 , The star Navi (γCas) Other than Gamma Cassiopeiae, these include Rho Cassiopeiae, a pulsating yellow hypergiant, V509 Cassiopeiae, a semiregular variable yellow hypergiant, Kappa Cassiopeiae, a variable blue supergiant, Omicron Cassiopeiae, a Gamma Cassiopeiae variable, and AO Cassiopeiae (Pearce’s Star), an eclipsing binary system consisting of two massive O-type stars distorted into ellipsoidal shapes by their close interaction. Your email address will not be published. IC 59 / gamma Cas nebula IC 63 / gamma Cas nebula The star γCas —— If you would like to have other images solved, please submit them to the astrometry group. Gamma Cassiopeiae has the stellar classification B0.5 IVe, indicating a subgiant star appearing blue or blue-white in colour. Gamma Cassiopeiae is a star at the center of the distinctive "W" asterism in the northern circumpolar constellation of Cassiopeia. Segin, the other hot class B star in the asterism, has 9.2 solar masses, a temperature of 15,174 K, a luminosity 2,500 times that of the Sun and it is about 140 light years closer to us. High overhead in northern autumn evenings lies the W- shaped constellation Cassiopeia, in mythology the Queen and mother to Andromeda, to us brilliant against the background of the Milky Way and fully circumpolar from most of the United States and all of Canada. Nicknamed the Ghost of Cassiopeia or the Ghost Nebula, IC 63 is slowly being eroded away by the star’s radiation. Seen from locations south of the equator (where the asterism is visible), it always appears inverted. Gamma Cassiopeiae also has two visual companions, catalogued as components B and C. The first companion is a magnitude 11 star separated by about 2 arcseconds from the primary, and the second is a magnitude 13 star almost an arcsecond away from the primary. Reply . Gamma Cassiopeia Region Gamma Cassiopeiae Nebula (IC63) DSOs. Posted by. From Virginia Beach , Gamma Cassiopeiae Nebula is visible all night.It will become visible around 17:55 (EST) as the dusk sky fades, 54° above your north-eastern horizon. High overhead in northern autumn evenings lies the W- shaped constellation Cassiopeia, in mythology the Queen and mother to Andromeda, to us brilliant against the background of the Milky Way and fully circumpolar from most of the United States and all of Canada. With a physical radius of 48 light years, it stretches across 35’ of the sky and is associated with the open … It is one of the five stars that form Cassiopeia’s recognizable W asterism. Nebula IC 63 - aka the "ghost" of the constellation Cassiopeia - is slowly dissipating under the influence of ionizing ultraviolet radiation from a hot, luminous variable star known as Gamma Cas. GAMMA CAS (Gamma Cassiopeiae). Their brightness varies with an amplitude of about a magnitude. In winter, it appears inverted. From Virginia Beach , Gamma Cassiopeiae Nebula is visible all night. They have decretion disks around the equatorial region, which sometimes reform or disappear. Cluster), NGC 7789 (the White Rose Cluster), NGC 663, and NGC 654, and the irregular starburst galaxy IC 10, one of our neighbours in the Local Group. 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. Notable deep sky objects in the constellation include the neighbouring Heart and Soul nebulae (IC 1805 and IC 1848), two large emission nebulae 7,500 light years away, the emission nebulae NGC 281 (the Pacman Nebula) and NGC 7635 (the Bubble Nebula), the open clusters Messier 52, Messier 103, NGC 457 (the E.T. “The Ghost Nebula is part of a much larger nebulous region surrounding Gamma Cassiopeiae that measures approximately two degrees on the sky – … Even though it is a very young star, Gamma Cassiopeiae has already left the main sequence and begun its death process. The star is running out of the supply of hydrogen in its core and is on its way to evolving into a giant. Bright Star, Double Star. Pictures, altitude charts, data sheet and sky map for Gamma Cassiopeiae Nebula - - Bright nebula in Cassiopeia Constellation Gamma Cassiopeiae is very easy to find. The only brighter star without a formally approved name is Gamma Velorum (informally known as Regor). Gamma Cassiopeiae. Additionally, they have very low surface brightness and can only be spotted in 10-inch or larger telescopes if observing conditions are not ideal. What the astrophotography does? Gamma Cassiopeiae is an exceptionally fast spinner, with a projected rotational velocity of 432 km/s. Thanks for any advice. Gamma Cassiopeiae itself usually shines at magnitude 2.25, but it has been observed to fade to magnitude 3.0 and brighten to magnitude 1.6. Der Stern ist eine starke Röntgenquelle am Himmel. The deep sky objects around Cassiopeia’s W, image: Wikisky. It is famous for its distinctive “W” shape. Gamma Cassiopeiae itself usually shines at magnitude 2.25, but it has been observed to fade to magnitude 3.0 and brighten to magnitude 1.6. 3.95), Kappa Cassiopeiae (mag. It has a wide (mag. In the late 1930s it underwent what is described as a shell episode and the brightness increased to above magnitude +2.0, then dropped rapidly to +3.4. Gamma Cassiopeiae is a star at the center of the distinctive "W" asterism in the northern circumpolar constellation of Cassiopeia. 3.37), Achird (Eta Cas, mag. For more distant galaxies it might be more than 65 million years so you might be looking at an image when dinosaurs still lived on our planet Earth. The brightest star belonging to this group is Achernar in the constellation Eridanus, the ninth brightest star in the sky. Gamma Cassiopeia Region Emission and reflection nebulas located in Cassiopeia. Closer to Caph, the irregular galaxy IC 10 has an apparent magnitude of 10.4 and lies 2.2 million light years from the Sun. Required fields are marked *, You may use these HTML tags and attributes:

, “To know that we know what we know, and to know that we do not know what we do not know, that is true knowledge.” - Nicolaus Copernicus. share. The star was reported to be a binary with a period of 203.59 days in a study published in 2000. The Sun with its planet system, moons travelling around the planets or our gests - comets visiting us from time to time. The bright star Gamma Cas is attended by two large wisps of nebulosity, IC 59 and IC 63. Mounts:Mesu 200 Mk2, Skywatcher EQ6R Pro. The emission lines in these stars are believed to come from circumstellar disks of material ejected from the stellar surfaces as a result of rapid rotation. HUBBLE TELESCOPE SPOTS A 'SPACE INVADER' Despite their almost identical proximity to Gamma Cassiopeia and similar appearance, Sh2-185, or IC 59 (lower) and IC 63 (above and right) are actually quite different in … Find Gamma Cassiopeiae Nebulae stock images in HD and millions of other royalty-free stock photos, illustrations and vectors in the Shutterstock collection. The star pattern appears as a W during the northern hemisphere spring and summer. Gamma Cassiopeiae location, image: Wikisky. 4.92 – 5.39) in Canis Major. 4.334). With a temperature of 25,000 K, a mass 17 times that of the Sun, luminosity 34,000 times solar, and an age of 8 million years, Gamma Cassiopeiae is the youngest, most luminous, hottest and most massive of the five stars that form the W. At a distance of 550 light years, it is also by far the most distant. 3.66), 50 Cassiopeiae (mag. IC 59 und IC 63 sind gemischte Emissions-Reflexionsnebel die vom hellen Stern Gamma Cassiopeiae (der mittlere Stern des Himmels-W der Kassiopeia) zum Leuchten angeregt werden. 2.24) and Caph (mag. The blue light of the nebula is the light from the star reflected by the dust in the nebula. The ultraviolet radiation energizes the electrons within the nebula, and the electrons release the energy as hydrogen-alpha emission, which gives the nebula its red glow. It will then reach its highest point in the sky at 20:44, 65° above your northern horizon. Gamma Cassiopeiae is classified as a Be star, a non-supergiant blue class B star showing Balmer (hydrogen) emission lines in its spectrum. gamma cassiopeia ic59 ic63 Nebulas This entry was posted on Tuesday, January 6th, 2015 at 3:43 pm and is filed under DSO , Nebulas , Wide fields . 4.8 – 5.5), Lambda Pavonis in Pavo (mag. 4.16), and Theta Cassiopeiae (mag. Gamma Cassiopeiae forms Cassiopeia’s W asterism with Segin (Epsilon Cassiopeiae), Ruchbah (Delta Cassiopeiae), Schedar (Alpha Cassiopeiae) and Caph (Beta Cassiopeiae). Gamma Cassiopeiae is an eruptive variable star. Schedar (alpha Cassiopeiae - α Cas) - is a magnitude +2.24 orange giant star, located 228 light-years distant. Acamar Achernar Acrux Adhara Albireo Alchiba Alcor Alcyone Aldebaran Alderamin Algenib Algol Algorab Alhena Alioth Alkaid Alkes Almach Alnair Alnilam Alnitak Alpha Centauri Alphard Alphecca Alpheratz Altair Aludra Ankaa Anser Antares Arcturus Ascella Asterope Atlas Atria Avior Baten Kaitos Bellatrix Betelgeuse Bharani Canopus Capella Caph Castor Celaeno Deneb Denebola Diphda Dubhe Electra Elnath Eltanin Enif Fomalhaut Gacrux Gamma Cassiopeiae Gienah Ginan Hadar Hamal Imai Izar Kaus Australis Kaus Borealis Kaus Media Kepler-22 Kraz Maia Marfik Markab Megrez Meissa Menkalinan Menkar Menkent Merak Merope Mesarthim Methuselah Star Miaplacidus Mimosa Minkar Mintaka Mira Mirach Mirfak Mirzam Mizar Mu Cephei Naos Nunki Peacock Phecda Pleione Polaris Pollux Procyon Proxima Centauri Rasalhague Regulus Rho Ophiuchi Rigel Rigil Kentaurus Ruchbah Sabik Sadr Saiph Sargas Scheat Schedar Segin Seginus Shaula Sheratan Sirius Spica Stephenson 2-18 Suhail Taygeta Thuban Toliman Unukalhai UY Scuti Vega VV Cephei VX Sagittarii Wasat Wezen WOH G64 Zeta Reticuli Zubenelgenubi Zubeneschamali, Navi, Tsih, Gamma Cassiopeiae, γ Cas, 27 Cassiopeiae, HD 5394, HR 264, HIP 4427, SAO 11482, FK5 32, BD+59°144, GC 1117, GCRV 526, PPM 12597, AG+60 106, ALS 6407, JP11 439, PLX 185.00, MCW 46, IRAS 00536+6026, TYC 4017-2319-1, 2MASS J00564251+6043002, ADS 782, Gaia DR2 426558460877467776, UBV 833, AAVSO 0050+60, WDS 00567+6043, CCDM J00567+6043A. Originally, the name was applied to Kappa Cassiopeiae and Gamma Cassiopeiae represented one of the horses pulling the chariot of Wang Liang, but this was later changed and Gamma came to represent the whip. It was the first star to be identified as a Be star, by the Italian astronomer Angelo Secchi in 1866. Thanks to astrophotography you can see things not not available to an open eye, a colorfull wonders of the Universe. The X-ray radiation emanating from the star is about 10 times stronger than the radiation detected from other Be or B stars. 09.20.2013 at 5:14 am. With a declination of +60° 43’, the star is visible from all locations north of the equator, but cannot be seen south of the latitude 29° S. Observers in southern latitudes where the star rises can only see it appear low above the horizon at certain times of year. Amateur astronomy can be a rewarding and fascinating hobby. It was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy. The name Tsih (sometimes spelled Cih) comes from the star’s Chinese name, 策 (Cè), meaning “whip.” Gamma Cassiopeiae is the sole star in the Chinese Whip asterism. ISO 1000. One of the stars in the nebula is Gamma Cassiopeiae - is a blue-white subgiant variable star which shines a staggering 65,000 times brighter than our Sun. Its brightness has been slowly increasing since to about magnitude 2.2. A nebula in the constellation of Cassiopeia has flowing veils of gas and dust that have earned it the nickname "Ghost Nebula." The name Navi (Ivan spelled backwards) was given to it by the American astronaut Virgil Ivan “Gus” Grissom, commander of the Apollo 1 mission, which ended with the deaths of all three crew members during a pre-launch test on January 27, 1967. Made with 15cm F6.2 newton captured with 350d mod and Astronomic's CLS filter, against light polution exposer 6x400 seconds guide with PHD and … 5 comments. 10), also with this dominant variable star close who makes so difficult obtain all details and nuances. Gamma Cassiopeiae was identified as an X-ray source in 1976, but it was unclear whether the star itself was the source or it had a mass-accreting binary companion. Like its neighbour Caph, Gamma Cassiopeiae is an example of gravity darkening. Gamma Cassiopeiae lies at a distance of 550 light years from Earth. 10), also with this dominant variable star close who makes so difficult obtain all details and nuances. Jul 12, 2020 - A 9.8 hour exposure of the nebula surrounding the star Gamma Cassiopeiae Equipment: Mount: iOptron CEM60 Telescope: 8" Orion Newtonian Astrograph 800mm f/3.9 Guide scope: Orion CT80 Camera: Modified Canon T5 Guide Camera: Lodestar x2 Accessories: Baader MPCC III, Astronomik CLS-CCD Clip-in Filter Software: APT, PHD2, DSS, PixInstight, Lightroom Schedar can be used to find the bright emission nebula NGC 281, popularly known as the Pacman Nebula. Gamma Cassiopeiae star. Also known as the ghost of Cassiopeia, IC 63 is being shaped by radiation from a nearby unpredictably variable star, Gamma Cassiopeiae, which is slowly eroding away the ghostly cloud of dust and gas. Many Be stars are variable in brightness. A study of the star’s X-ray flux found variations with a period interpreted as the star’s rotational period (1.21 days), indicating that the X-rays did not come from a companion. The Ghost Nebula (IC 63), image: ESA/Hubble, NASA (CC BY 4.0). Gamma Cassiopeiae problem - posted in DSLR & Digital Camera Astro Imaging & Processing: What am I doing wrong processing this image ... the star Navi became enormous and I cant figure out what to do about it, other than cropping it out entirely ... this is 20 images at 2:30 each. At its brightest, the star outshines both Schedar (mag. The star is a known X-ray source. The colours in the eerie nebula showcase how the nebula is affected by the powerful radiation from the distant star. The variations … Vermutlich handelt es sich um ein enges Doppelsternsystem, bestehend aus einem Riesenstern und einem Neutronenstern. The nebula is also catalogued as IC 11 and Sharpless 184. About 550 light-years away in the constellation of Cassiopeia lies IC 63, a stunning and slightly eerie nebula. Gamma Cassiopeiae ist ein unregelmäßig veränderlicher Stern der Spektralklasse B0 in 800 Lichtjahren Entfernung. If there is a transient disk, they are classified as Gamma Cassiopeiae variables. Cassiopeia (the Queen) and Cepheus (the King) Border, From IC348 to NGC1333 (star field in Perseus). Cassiopeia is one of the 88 modern constellationswe see today. Cassiopeia also contains two well-known supernova remnants: Tycho’s Star (3C 10), the remnant of a Type Ia supernova (SN 1572) observed in November 1572, and Cassiopeia A, the brightest extrasolar radio source in the sky. save hide report. It is the central star of Cassiopeia’s W pattern. 1.6 – 3.0), Schedar (Alpha Cas, mag. The radiation of Gamma Cassiopeiae is so powerful that it even affects IC 63, sometimes nicknamed the Ghost Nebula, that lies several light years away from … Although it is a fairly bright star with an apparent visual magnitude that varies from 1.6 to 3.0. It exhibits irregular variations in brightness, which ranges between 2.20 magnitudes and 3.40 magnitudes. Stars classified as Gamma Cassiopeiae variables include Gomeisa in Canis Minor (mag. Thousands of new, high … 10), also with this dominant variable star close who makes so difficult obtain all details and nuances. The binary nature of the star was confirmed in 2011. Since there were no signs of a companion in the spectrum of Gamma Cassiopeiae, the system was adopted as a single-lined spectroscopic binary, that is to say, a system where the spectrum of only one component is seen and the presence of a companion is inferred from spectral lines periodically shifting towards the blue, then towards red and then towards blue again, indicating that the components are moving toward us and away from us, i.e. IC 59 und IC 63 sind gemischte Emissions-Reflexionsnebel die vom hellen Stern Gamma Cassiopeiae zum Leuchten gebracht werden. astrokuky. The star rotates very rapidly and bulges outward along the equator. From Redmond , Gamma Cassiopeiae Nebula is visible all night because it is circumpolar. The large open cluster NGC 225 stretches across 12 arcminutes northwest of the star. It is the only known starburst galaxy in the Local Group. The component B has a similar space velocity to Gamma Cassiopeiae and may be a physical companion at a separation of at least 370 light years, orbiting with a period of at least 1,500 years. At dusk, it will become visible around 19:33 (PDT), 47° above your north-eastern horizon. Aufgrund ihrer geringen Flächenhelligkeit werden die beiden Nebel auch als Geisternebel (Ghost Nebula) oder … 5 months ago. It is the prototype of the class of Gamma Cassiopeiae variable stars. The Cassiopeia constellation gets its name … The open clusters NGC 189 and NGC 129 appear in the area between Gamma Cassiopeiae and its bright neighbour Caph, the rightmost star of the W asterism. Please join me with my adventure through a starry night sky. Its high mass seals its fate as a supernova in the not-too-distant astronomical future. Gamma can emit 10 times higher the amounts of X-ray radiation than that of other B class stars. Grissom had used the name Navi as a joke on his planning charts for the mission and succeeding Apollo astronauts kept using it as a memorial. Date: November 2nd, 3rd, 4th, 15-16th. Guiding … Informally known as Navi, it is one of the four brightest stars in Cassiopeia. The star’s estimated age is only 8 million years. If they are believed to be pulsating stars, they are classified as Lambda Eridani variables. Cassiopeia is a constellation found in the northern sky. Gamma Cassiopeiae does not have a formal name. IC 59 and IC 63 (Sh2-185) - Gamma Cassiopeiae Nebula, L: 6x10min (1x1), RGB: 5x5min each (2x2), Imager Temp -20C. NGC 189 has an apparent magnitude of 8.8 and occupies 3.7’ of the sky, and NGC 129 shines at magnitude 6.5 and has an apparent size of 21’. bitznbitez ( was lucias_clay ) 09.20.2013 at 5:37 am. It will be lost to dawn twilight around 06:16, 41° above your north-western horizon. Gamma Cassiopeiae, Caph, NGC 129, NGC 189 and IC 10, image: Wikisky. Officially known as IC 63, the Nebula was photographed by Hubble in August 2016. The radiation of Gamma Cassiopeiae is so powerful that it even affects IC 63, sometimes nicknamed the Ghost Nebula, that lies several light years away from … Gamma Cassiopeiae is informally known as Navi or Tsih. Maybe the ISO is too high. It will then reach its highest point in the sky at 20:44, 65° above your northern horizon. It varies from a maximum of 1.6 magnitude during an eruption to 3.0 magnitude when the mass it is expelling from its equator blocks some of its light. Its poles are closer to the centre of mass and therefore hotter and more luminous than the equatorial region. 2020 Equipment: ATIK 460EX with EFW2, Skywatcher f5.5 Esprit 100 ED refractor, Avalon Linear mount, guiding with Lodestar X2/PHD. The bright star near the center, Navi, is part of the constellation Cassiopeia, and it ionizes the nearby gases in the emissions and reflections nebula cataloged as IC 63 and IC 59. It has an apparent magnitude of 7.0 and lies at a distance of 2,143 light years. Gamma Cassiopeiae is 70,000 times more luminous than the Sun and is surrounded by two faint reflection / emission nebulae, IC 59 and IC 63. 2.24), Caph (Beta Cas, mag. Gamma Cassiopeiae Nebula (IC63) Technical card Imaging telescopes or lenses:Teleskop Service TS Photoline 107mm f/6.5 Super-Apo, Altair Astro RC250-TT 10" RC Truss Tube. Gamma Cassiopeiae is a prototype for its own class of variable stars known as the Gamma Cassiopeiae variables. The 2011 study suggested a circular orbit with a period between 203.0 and 203.6 days and a companion with a mass of 0.98 solar masses. The variations in brightness are caused by shell episodes, where shell features appear in the star’s spectrum, significantly increasing or decreasing brightness. No está en la foto pero aun así es posible sentir la fuerte presencia de esta estrella tan béstia (en la parte superior derecha de la imagen) como esa luz azul que va a la nebulosa. It exhibits irregular variations in brightness, which ranges between 2.20 magnitudes and 3.40 magnitudes. As another effect of the star’s fast rotation, a lot of material from the surface is ejected and forms a hot disk of gas. Im Ausbruch kann sich der Spektraltyp bis zu F5 abkühlen. However the final results would also depend on the quality of skies you use and which should be affected by light polution as little as possible and your processing skils. You can follow any … A more advanced amateur astrophotography could require some more sophisticated and expensive equatorial mounts and potentially cooled CCD cameras. It allows us to look into the history and take a picture of it. The periods when the disks are particularly strong and the brightness increases are called shell events. Wang Liang is a legendary charioteer represented by an asterism formed by Caph, Schedar, Achird, Kappa Cassiopeiae and Lambda Cassiopeiae. Astronomy is a great adventure into a distant words which rememinds us how small we all are living on our planet Earth and imagine how hugly hudge the entire universe is. Im Maximum erreicht er eine Helligkeit von 1,6 mag und wird damit noch heller als Schedir. Gamma Cassiopeiae has a mass 17 times that of the Sun and, as it ended its main sequence lifetime, it has expanded to a size of 10 solar radii. 99% Upvoted. It is one of the 48 Greek constellations, first listed by the Greek astronomer Claudius Ptolemy in the 2nd century CE. Gamma Cassiopeiae and other variables of this type are eruptive stars. Like other exceptionally massive stars, it has evolved very quickly and will not live a very long life.

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