NGC 2100 | |
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Observation data (J2000 epoch) | |
Right ascension | 05h 42m 08s [1] |
Declination | −69° 12.7′ |
Physical characteristics | |
Estimated age | 15 million years old [2] |
Other designations | NGC 2100, KMHK 1257, [SL63] 662 |
Associations | |
Constellation | Dorado |
NGC 2100 is an open cluster in the Large Magellanic Cloud, a small satellite galaxy of the Milky Way. These clusters have a lifespan measured in tens or hundreds of millions of years, as they eventually disperse through gravitational interaction with other bodies. As its format is approximately round, it is sometimes mistaken as a globular cluster.
NGC 8 is an asterism of two completely unrelated stars in the constellation Pegasus, discovered on 29 September 1865 by Otto Wilhelm von Struve. It is approximately 2.7 arc minutes away from NGC 9.
NGC 4874 is a supergiant elliptical galaxy. It was discovered by the British astronomer Frederick William Herschel I in 1785, who catalogued it as a bright patch of nebulous feature. The second-brightest galaxy within the northern Coma Cluster, it is located at a distance of 109 megaparsecs from Earth.
NGC 6642 is a globular cluster located 26,700 light-years from Earth, in the constellation Sagittarius. Many "blue stragglers" have been spotted in this globular, and it is known to be lacking in low-mass stars.
NGC 6166 is an elliptical galaxy in the Abell 2199 cluster. It lies 490 million light years away in the constellation Hercules. The primary galaxy in the cluster, it is one of the most luminous galaxies known in terms of X-ray emissions.
NGC 6811 is an open cluster in the constellation of Cygnus, near the constellation of Lyra. It has an angular size half that of the full Moon and includes about 1000 stars of roughly similar magnitude. It has also been called "The Hole in the Cluster" because of its dark center.
NGC 262 is a spiral galaxy in the cluster LGG 14. It is a Seyfert 2 spiral galaxy located 287 million light years away in the constellation Andromeda. It was discovered on September 17, 1885 by Lewis A. Swift.
NGC 129 is an open cluster in the constellation Cassiopeia. It was discovered by William Herschel in 1788. It is located almost exactly halfway between the bright stars Caph and γ Cassiopeiae. It is large but not dense and can be observed by binoculars, through which the most obvious component is a small triangle of stars of magnitude 8 and 9, located in the center of the cluster.
NGC 1869 is an open cluster in the Dorado constellation. It is located within the Large Magellanic Cloud. It was discovered by James Dunlop on September 24, 1826, using a telescope reflector with a nine-inch aperture. It is a large cluster of rich scattered stars. It is part of a triple association with NGC 1871 and NGC 1873. It has an apparent magnitude of 14.0.
NGC 6044 is a lenticular galaxy located about 465 million light-years away in the constellation Hercules. NGC 6044 was discovered by astronomer Lewis Swift on June 27, 1886. It was then rediscovered by astronomer Guillaume Bigourdan on June 8, 1888. NGC 6044 is a member of the Hercules Cluster.
NGC 4883 is a barred lenticular galaxy located about 315 million light-years away in the constellation Coma Berenices. NGC 4883 was discovered by astronomer Heinrich d'Arrest on April 22, 1865. It is a member of the Coma Cluster.
NGC 1273 is a lenticular galaxy located about 245 million light-years away in the constellation Perseus. It was discovered by astronomer Heinrich d'Arrest on February 14, 1863 and is a member of the Perseus Cluster.
NGC 1283 is an elliptical galaxy located about 250 million light-years away in the constellation Perseus. The galaxy was discovered by astronomer Guillaume Bigourdan on October 23, 1884 and is a member of the Perseus Cluster. It also contains an active galactic nucleus.
NGC 1293 is an elliptical galaxy located about 215 million light-years away in the constellation Perseus. It was discovered by astronomer William Herschel on October 17, 1786. NGC 1293 is a member of the Perseus Cluster.
NGC 3840 is a spiral galaxy located about 320 million light-years away in the constellation Leo. The galaxy was discovered by astronomer Heinrich d'Arrest on May 8, 1864. NGC 3840 is a member of the Leo Cluster. The galaxy is rich in neutral atomic hydrogen and is not interacting with its environment.
NGC 3860 is a spiral galaxy located about 340 million light-years away in the constellation Leo. NGC 3860 was discovered by astronomer William Herschel on April 27, 1785. The galaxy is a member of the Leo Cluster and is a low-luminosity AGN (LLAGN). Gavazzi et al. however classified NGC 3860 as a strong AGN which may have been triggered by a supermassive black hole in the center of the galaxy.
NGC 4207 is a spiral galaxy located about 50 million light-years away in the constellation Virgo. The galaxy was discovered by astronomer Heinrich d'Arrest on March 23, 1865. NGC 4207 is a member of the Virgo Cluster.
NGC 4212 is a flocculent spiral galaxy with LINER activity located about 53 million light-years away in the constellation Coma Berenices. The galaxy was discovered by astronomer William Herschel on April 8, 1784, and was listed in the NGC catalog as NGC 4208. He then observed the same galaxy and listed it as NGC 4212. Astronomer John Louis Emil Dreyer later concluded that NGC 4208 was identical to NGC 4212. NGC 4212 is a member of the Virgo Cluster.
NGC 4222 is an edge-on spiral galaxy located about 60 million light-years away in the constellation Coma Berenices. It was discovered by astronomer William Herschel on April 8, 1784 and is often misidentified as IC 3087. NGC 4222 is a member of the Virgo Cluster and is a companion of NGC 4216 which lies about 180,000 ly (56 kpc) away. Despite this, the two galaxies are not interacting.
NGC 4237 is a flocculent spiral galaxy located about 60 million light-years away in the constellation Coma Berenices. The galaxy was discovered by astronomer William Herschel on December 30, 1783 and is a member of the Virgo Cluster. It is also classified as a LINER galaxy and as a Seyfert galaxy.
NGC 4299 is a featureless spiral galaxy located about 55 million light-years away in the constellation Virgo. It was discovered by astronomer William Herschel on March 15, 1784 and is a member of the Virgo Cluster.