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Collinder Catalog
The Collinder catalogue is a catalogue of 471 open clusters compiled by Swedish astronomer Per Collinder. It was published in 1931 as an appendix to Collinder's paper ''On structural properties of open galactic clusters and their spatial distribution''. The catalogue contains 452 open clusters, 11 globular clusters, 6 Asterism (astronomy), asterisms, 1 Stellar kinematics#Moving groups, stellar moving group, and 1 Stellar kinematics#Stellar associations, stellar association. Catalogue objects are denoted by ''Collinder'', e.g. "Collinder 399". Dated prefixes include as ''Col + catalogue number'', or ''Cr + catalogue number'', e.g. "Cr 399". Collinder objects Notes Errors There are some errors in Collinder's list or references to it. For example:Archinal, B. A., and S. J. Hynes. 2003. ''Star Clusters'', Richmond, VA: Willmann-Bell * Cr 21, NGC 956, 27, NGC 1746, 57, NGC 6738, 396, Collinder 399, 399, and Messier 73, 426 are asterism (astronomy), asterisms. * Cr 32, 33, and 34 a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open Cluster
An open cluster is a type of star cluster made of tens to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age. More than 1,100 open clusters have been discovered within the Milky Way galaxy, and many more are thought to exist. Each one is loosely bound by mutual gravity, gravitational attraction and becomes disrupted by close encounters with other clusters and clouds of gas as they orbit the Galactic Center. This can result in a loss of cluster members through internal close encounters and a dispersion into the main body of the galaxy. Open clusters generally survive for a few hundred million years, with the most massive ones surviving for a few billion years. In contrast, the more massive globular clusters of stars exert a stronger gravitational attraction on their members, and can survive for longer. Open clusters have been found only in spiral galaxy, spiral and irregular galaxy, irregular galaxies, in which active star formatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC 136
NGC 136 is an open cluster in the constellation Cassiopeia. It was discovered by William Herschel Frederick William Herschel ( ; ; 15 November 1738 – 25 August 1822) was a German-British astronomer and composer. He frequently collaborated with his younger sister and fellow astronomer Caroline Herschel. Born in the Electorate of Hanover ... on November 26, 1788. References Open clusters Astronomical objects discovered in 1788 0136 Cassiopeia (constellation) {{star-cluster-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC 381 PanS
NGC may refer to: Companies * NGC Corporation, the name of US electric company Dynegy, Inc. from 1995 to 1998 * National Gas Company of Trinidad and Tobago, a state-owned natural gas company in Trinidad and Tobago * National Grid plc, a former name of National Grid Electricity Transmission plc, the operator of the British electricity transmission system * Northrop Grumman Corporation, an aerospace and defense conglomerate formed from the merger of Northrop Corporation and Grumman Corporation in 1994 * Numismatic Guaranty Company, a coin certification company in the United States * National Garden Clubs, headquartered in St. Louis, Missouri * Network General Corporation, a defunct networking hardware company Other uses * National Gallery of Canada, an art gallery founded in 1880 in Ottawa, Canada * National Games of China, the national multi-sport event of China * National Geographic (American TV channel), a documentary and reality television channel established in the United States ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC 381
NGC 381 is an open cluster of stars in the northern constellation of Cassiopeia, located at a distance of approximately from the Sun. Credit for the discovery of this cluster was given to Caroline Herschel by her brother William in 1787, although she may never have actually seen it. This is a Trumpler class cluster of intermediate age, estimated at 316 million years. This class indicates the cluster is relatively weakly concentrated, with a small brightness range and an intermediate richness of stars. A total of 350 probable members have been identified, down to 20th magnitude, and the cluster contains about 32 times the mass of the Sun. The cluster has a core angular radius of and an outer cluster radius of . It has a physical tidal radius of . No giant stars have been discovered in this cluster. Four candidate variable stars have been found in the field of NGC 381; one of which is a suspected cluster member. The eclipsing binary A binary star or binary star system is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC 0366 DSS
NGC may refer to: Companies * NGC Corporation, the name of US electric company Dynegy, Inc. from 1995 to 1998 * National Gas Company of Trinidad and Tobago, a state-owned natural gas company in Trinidad and Tobago * National Grid plc, a former name of National Grid Electricity Transmission plc, the operator of the British electricity transmission system * Northrop Grumman Corporation, an aerospace and defense conglomerate formed from the merger of Northrop Corporation and Grumman Corporation in 1994 * Numismatic Guaranty Company, a coin certification company in the United States * National Garden Clubs, headquartered in St. Louis, Missouri * Network General Corporation, a defunct networking hardware company Other uses * National Gallery of Canada, an art gallery founded in 1880 in Ottawa, Canada * National Games of China, the national multi-sport event of China * National Geographic (American TV channel), a documentary and reality television channel established in the United States ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC 366
NGC 366 is an open cluster located in the constellation Cassiopeia. It was discovered on October 27, 1829, by John Herschel. It was described by Dreyer as a "cluster, small." See also * Open cluster * List of NGC objects (1–1000) * Cassiopeia (constellation) Cassiopeia () is a constellation and Asterism (astronomy), asterism in the northern sky named after the vain queen Cassiopeia (mother of Andromeda), Cassiopeia, mother of Andromeda (mythology), Andromeda, in Greek mythology, who boasted about her ... References External links * SEDS 0366 18291027 Cassiopeia (constellation) Open clusters Discoveries by John Herschel {{star-cluster-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC 0281 DSS
NGC may refer to: Companies * NGC Corporation, the name of US electric company Dynegy, Inc. from 1995 to 1998 * National Gas Company of Trinidad and Tobago, a state-owned natural gas company in Trinidad and Tobago * National Grid plc, a former name of National Grid Electricity Transmission plc, the operator of the British electricity transmission system * Northrop Grumman Corporation, an aerospace and defense conglomerate formed from the merger of Northrop Corporation and Grumman Corporation in 1994 * Numismatic Guaranty Company, a coin certification company in the United States * National Garden Clubs, headquartered in St. Louis, Missouri * Network General Corporation, a defunct networking hardware company Other uses * National Gallery of Canada, an art gallery founded in 1880 in Ottawa, Canada * National Games of China, the national multi-sport event of China * National Geographic (American TV channel), a documentary and reality television channel established in the United States ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IC 1590
IC 1590 is an open cluster located in the nebulosity of NGC 281. 279 stars with magnitudes less than or equal to 17 are visible within or near the cluster. The cluster is estimated to be 3.5 million years old, making it relatively young compared to other star systems. Inside the cluster is a multiple-star system that emits light which helps give the dust in NGC 281 its glow. Gallery The Pacman Nebula.jpg , Composite view of IC 1590, using data from Chandra in x-rays (purple) and Spitzer in infrared (red, green, blue). Allwise_unwise_compared.png , Infrared view of IC 1590 as seen by WISE. The left image uses Allwise Atlas images and the right image use unWISE coadds. NGC 281HSTFull.jpg , Bok globule in NGC 281 near the star cluster IC 1590. Image by the Hubble Space Telescope. IC 1590 HST.jpg , Dark clouds near IC 1590 seen by the Hubble Space Telescope. See also *Cassiopeia * NGC 281 References {{Cassiopeia (constellation) Open clusters Cassiopeia (constellation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC225HunterWilson
NGC may refer to: Companies * NGC Corporation, the name of US electric company Dynegy, Inc. from 1995 to 1998 * National Gas Company of Trinidad and Tobago, a state-owned natural gas company in Trinidad and Tobago * National Grid plc, a former name of National Grid Electricity Transmission plc, the operator of the British electricity transmission system * Northrop Grumman Corporation, an aerospace and defense conglomerate formed from the merger of Northrop Corporation and Grumman Corporation in 1994 * Numismatic Guaranty Company, a coin certification company in the United States * National Garden Clubs, headquartered in St. Louis, Missouri * Network General Corporation, a defunct networking hardware company Other uses * National Gallery of Canada, an art gallery founded in 1880 in Ottawa, Canada * National Games of China, the national multi-sport event of China * National Geographic (American TV channel), a documentary and reality television channel established in the United States ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC 225
NGC 225 is an open cluster in the constellation Cassiopeia. It is located roughly 2,200 light-years from Earth. It is about 100 to 150 million years old. The binary fraction, or the fraction of stars that are multiple stars, is 0.52. See also * Open cluster * List of NGC objects (1–1000) * Cassiopeia (constellation) Cassiopeia () is a constellation and Asterism (astronomy), asterism in the northern sky named after the vain queen Cassiopeia (mother of Andromeda), Cassiopeia, mother of Andromeda (mythology), Andromeda, in Greek mythology, who boasted about her ... References External links * * SEDS {{DEFAULTSORT:NGC 0225 Open clusters Cassiopeia (constellation) 0225 17830927 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cepheus (constellation)
Cepheus is a constellation in the deep northern sky, named after Cepheus, King of Aethiopia, Cepheus, a king of Aethiopia in Greek mythology. It is one of the 48 constellations listed by the second century astronomer Ptolemy, and it remains one of the 88 constellations in the modern times. The constellation's brightest star is Alderamin (Alpha Cephei), with an apparent magnitude of 2.5. Delta Cephei is the prototype of an important class of star known as a Cepheid variable. RW Cephei, an orange hypergiant, together with the red supergiants Mu Cephei, MY Cephei, VV Cephei, V381 Cephei, and V354 Cephei are among the List of largest stars, largest stars known. In addition, Cepheus also has the hyperluminous quasar S5 0014+81, which hosts an ultramassive black hole in its core, reported at 40 billion solar masses, about 10,000 times more massive than the Sagittarius A*, central black hole of the Milky Way, making this among the most List of most massive black holes, massive black ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC 188
NGC 188 (also known as Caldwell 1 or the Polarissima Cluster) is an open cluster in the constellation Cepheus. It was discovered by John Herschel in 1825. Unlike most open clusters that drift apart after a few million years because of the gravitational interaction of our Milky Way galaxy, NGC 188 lies far above the plane of the galaxy and is one of the most ancient of open clusters known, at approximately 6.8 billion years old. NGC 188 is very close to the North Celestial Pole, under five degrees away, and in the constellation of Cepheus at an estimated 5,000 light-years' distance, this puts it slightly above the Milky Way's disc and further from the center of the galaxy than the Sun The Sun is the star at the centre of the Solar System. It is a massive, nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surface mainly as visible light a .... References External links * NGC 188at SE ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
