NGC 1998 | |
---|---|
Observation data (J2000.0 epoch) | |
Constellation | Pictor |
Right ascension | 05h 33m 15.7s [1] |
Declination | −48° 41′ 44″ [1] |
Redshift | 0.015137 [2] |
Heliocentric radial velocity | 4538 [2] |
Distance | 207 million |
Apparent magnitude (V) | 14.3 [3] |
Apparent magnitude (B) | 15.2 [3] |
Characteristics | |
Type | SO |
Size | 0.90 x 0.5 arc minutes [3] |
Other designations | |
ESO 204-15, PGC 17434 |
NGC 1998 (also known as ESO 204-15, PGC 17434) is a lenticular galaxy located in the Pictor constellation. It was discovered by John Herschel on December 28, 1834 [4] and is about 207 million light-years from the Milky Way. Its apparent magnitude is 14.3. [3] and its size is 0.90 by 0.5 arc minutes. [3] In some sources such as SIMBAD, it is misidentified as nearby double star NGC 1995. [2]
Leo Minor is a small and faint constellation in the northern celestial hemisphere. Its name is Latin for "the smaller lion", in contrast to Leo, the larger lion. It lies between the larger and more recognizable Ursa Major to the north and Leo to the south. Leo Minor was not regarded as a separate constellation by classical astronomers; it was designated by Johannes Hevelius in 1687.
NGC 4697 is an elliptical galaxy some 40 to 50 million light-years away in the constellation Virgo. It is a member of the NGC 4697 Group, a group of galaxies also containing NGC 4731 and several generally much smaller galaxies This group is about 55 million light-years away; it is one of the many Virgo II Groups, which form a southern extension of the Virgo Supercluster of galaxies.
NGC 1725 is a lenticular galaxy in the constellation Eridanus. The galaxy is listed in the New General Catalogue. It was discovered on November 10, 1885 by the astronomer Edward Emerson Barnard.
NGC 70 is a spiral galaxy located in the constellation Andromeda. It was discovered on October 7, 1855, by R. J. Mitchell and was also observed on December 19, 1897 by Guillaume Bigourdan from France who described it as "extremely faint, very small, round, between 2 faint stars".
NGC 72 is a barred spiral galaxy estimated to be about 320 million light-years away in the constellation of Andromeda. It was discovered by R. J. Mitchell in 1855 and its magnitude is 13.5.
NGC 101 is a spiral galaxy estimated to be about 150 million light-years away in the constellation of Sculptor. It was discovered by John Herschel in 1834 and its magnitude is 12.8. It is a member of the Southern Supercluster the closest galaxy supercluster to the Local Supercluster.
NGC 7004 is a spiral galaxy around 330 million light-years away from Earth in the constellation Indus. NGC 7004 has an estimated diameter of 166,980 light-years. NGC 7004 was discovered by astronomer John Herschel on October 2, 1834. NGC 7004 is also part of a group of galaxies that contains the nearby galaxy NGC 7002.
NGC 7012 is a large, bright elliptical galaxy located about 380 million light-years away from Earth in the constellation Microscopium. NGC 7012 was discovered by astronomer John Herschel on July 1, 1834.
NGC 7025 is a spiral galaxy located about 210 million light-years away from Earth in the constellation Delphinus. NGC 7025 is also classified as a LINER galaxy. The galaxy has an estimated diameter of 161,830 light-years. It was discovered by astronomer Albert Marth on September 17, 1863.
NGC 7035 and NGC 7035A are a pair of interacting lenticular galaxies located around 400 to 430 million light-years away in the constellation of Capricornus. The main galaxy, NGC 7035 was discovered by astronomer Frank Muller in 1886.
NGC 7096 is a grand-design spiral galaxy located about 130 million light-years away in the constellation of Indus. NGC 7096 is also part of a group of galaxies that contains the galaxy NGC 7083. NGC 7096 was discovered by astronomer John Herschel on August 31, 1836.
NGC 4461 is a lenticular galaxy located about 50 million light-years away in the constellation of Virgo. It was discovered by astronomer William Herschel on April 12, 1784. NGC 4461 is a member of Markarian's Chain which is part of the Virgo Cluster.
NGC 1993 is a lenticular galaxy located in the Lepus constellation. It was discovered by John Herschel on February 6, 1835. It is about 143 million light years from the Milky Way. Its apparent magnitude is 13.39 and its size is 1.5 arc minutes.
NGC 499, also occasionally referred to as PGC 5060, IC 1686 or GC 289, is a lenticular galaxy in the constellation Pisces. It is located approximately 197 million light-years from the Solar System and was discovered on 12 September, 1784 by astronomer William Herschel.
NGC 519, also occasionally referred to as PGC 5182, is an elliptical galaxy located approximately 242 million light-years from the Solar System in the constellation Cetus. It was discovered on 20 November 1886 by astronomer Lewis Swift.
NGC 521, also occasionally referred to as PGC 5190 or UGC 962, is a barred spiral galaxy located approximately 224 million light-years from the Solar System in the constellation Cetus. It was discovered on 8 October 1785 by astronomer William Herschel.
NGC 525, also occasionally referred to as PGC 5232 or UGC 972, is a lenticular galaxy located approximately 95.6 million light-years from the Solar System in the constellation Pisces. It was discovered on 25 September 1862 by astronomer Heinrich d'Arrest.
NGC 527, also occasionally referred to as PGC 5128 or PGC 5141, is a lenticular galaxy located approximately 259 million light-years from the Solar System in the constellation Sculptor. It was discovered on 1 September 1834 by astronomer John Herschel.
NGC 600 is an emission-line galaxy in the constellation Cetus. It was discovered by William Herschel on 10 September 1785. The galaxy has a diameter of 70,000 light-years. It is also approximately 90 million light-years from the Milky Way.