NGC 740 | |
---|---|
Observation data (J2000 epoch) | |
Constellation | Triangulum |
Right ascension | 01h 56m 54.867s [1] |
Declination | +33° 00′ 54.63″ [1] |
Helio radial velocity | 4,518 [2] km/s |
Distance | 198.9 Mly (60.98 Mpc) [2] |
Apparent magnitude (B) | 14.9 |
Characteristics | |
Type | SBb? [3] |
Mass | 2.48×1012 [2] M☉ |
Size | 1,100 kly [2] |
Apparent size (V) | 1.017′ × 0.264′ [1] |
Other designations | |
UGC 1421, MCG +05-05-031, PGC 7316 [4] |
NGC 740 is a barred spiral galaxy located in the Triangulum constellation. It is estimated to be 210 million light-years from the Milky Way and has a diameter of about 85,000 light-years. It was discovered by the Irish engineer Bindon Stoney, an assistant to William Parsons. [5] [6] [7]
NGC 3486 is an intermediate barred spiral galaxy located about 27.4 million light years away in the constellation of Leo Minor. It has a morphological classification of SAB(r)c, which indicates it is a weakly barred spiral with an inner ring and loosely wound arms. This is a borderline, low-luminosity Seyfert galaxy with an active nucleus. However, no radio or X-ray emission has been detected from the core, and it may only have a small supermassive black hole with less than a million times the mass of the Sun.
NGC 6782 is a barred spiral galaxy located in the southern constellation of Pavo, at a distance of approximately 173 megalight-years from the Milky Way. It was discovered on July 12, 1834 by English astronomer John Herschel. John L. E. Dreyer described it as, "considerably faint, considerably small, round, a little brighter middle, 9th magnitude star to south". The morphological classification of NGC 6782 is (R1R′2)SB(r)a, indicating a barred spiral galaxy with a multiple ring system and tightly-wound spiral arms. It is seen nearly face-on, being inclined by an angle of 27.2°±0.2° to the line of sight from the Earth.
NGC 4319 is a face-on barred spiral galaxy located about 77 million light years away in the constellation Draco. The morphological classification is SB(r)ab, which indicates it is a barred spiral with an inner ring structure and moderate to tightly wound arms. It is situated in physical proximity to the galaxies NGC 4291 and NGC 4386, with X-ray emissions from the intervening gap indicating NGC 4319 and NGC 4291 may be interacting. NGC 4319 has a much higher proportion of ionized hydrogen compared to the Milky Way galaxy.
NGC 5821 is a spiral galaxy with a ring structure in the constellation Boötes. It lies near a similarly massed galaxy, NGC 5820, at the same redshift. Both galaxies were discovered by the astronomer William Herschel.
NGC 5614 is an unbarred spiral galaxy in the constellation Boötes. It is the primary member of the Arp 178 triplet of interacting galaxies with NGC 5613 and NGC 5615.
NGC 5545 is a spiral galaxy in the northern constellation of Boötes. It is interacting with the barred spiral galaxy NGC 5544.
NGC 5754 is a barred spiral galaxy located 218 million light years away in the constellation Boötes. It is a member of the Arp 297 interacting galaxies group, which consists of NGC 5752, NGC 5753, NGC 5754, NGC 5755. Along with NGC 2718 and UGC 12158, NGC 5754 is often considered a Milky Way-twin.
NGC 634 is a spiral galaxy, lying at a distance of 217.1 megalight-years away from the Milky Way in the northern constellation of Triangulum. This object was discovered in the nineteenth century by French astronomer Édouard Stephan. It is inclined by an angle of 82.4° to the line of sight from the Earth, and thus is being viewed nearly edge on.
NGC 159 is a barred lenticular galaxy in the constellation Phoenix. The galaxy was discovered on October 28, 1834, by John Frederick William Herschel.
NGC 1077 is a spiral galaxy in the constellation Perseus. It was discovered on 16 August 1886 by Lewis A. Swift. It was described as "very faint, pretty large, extended" by John Louis Emil Dreyer, the compiler of the New General Catalogue.
NGC 5030 is a barred spiral galaxy in the constellation Virgo. The object was discovered on 17 March 1881 by the American astronomer Edward Singleton Holden.
NGC 950 is a barred spiral galaxy in the constellation Cetus. It is approximately 205 million light-years away from the Solar System and has a diameter of about 85,000 light-years. The object was discovered in 1886 by American astronomer and mathematician Ormond Stone.
NGC 990 is an elliptical galaxy located in the constellation Aries about 153 million light-years from the Milky Way. It was discovered by the German - British astronomer William Herschel in 1786.
NGC 670 is a lenticular galaxy located in the Triangulum constellation about 165 million light years from the Milky Way. It was discovered by the German-British astronomer William Herschel in 1786.
NGC 906 is a barred spiral galaxy in the constellation Andromeda in the northern sky. It is estimated to be 215 million light years from the Milky Way and has a diameter of approximately 110,000 ly. NGC 906 was discovered on October 30, 1878 by astronomer Édouard Stephan.
NGC 804 is a lenticular galaxy located in the Triangulum constellation about 231 million light-years from the Milky Way. It was discovered by the American astronomer Lewis Swift in 1885. This galaxy was also observed by the French astronomer Guillaume Bigourdan on December 24, 1897, and it has been added to the Index Catalogue under the symbol IC 1773.
NGC 996 is an elliptical galaxy of the Hubble type E0 in the constellation Andromeda. It is estimated to be 210 million light years from the Milky Way and has a diameter of approximately 75,000 ly. The supernova SN 1996bq occurred in this galaxy. NGC 996 was discovered on December 7, 1871 by astronomer Édouard Stephan.
NGC 531 is a barred spiral galaxy in the constellation Andromeda with a visual magnitude of 10.51. It is a distance of 65.7 Mpc from the Sun. It is a member of the Hickson Compact Group HCG 10, and is interacting with the other members of the group.
NGC 736 is an elliptical galaxy in the constellation Triangulum. It is an estimated 200 million light years from the Milky Way and has a diameter of approximately 85,000 light years. NGC 736 was discovered on September 12, 1784 by the German-British astronomer William Herschel.
NGC 861 is a spiral galaxy in the constellation Triangulum. It is estimated to be 360 million light-years from the Milky Way and has a diameter of approximately 165,000 light-years. The object was discovered on September 18, 1865 by Heinrich d'Arrest.
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