NGC 7640 | |
---|---|
Observation data (J2000 epoch) | |
Constellation | Andromeda |
Right ascension | 23h 22m 06.58s [1] |
Declination | +40° 50′ 43.5″ [1] |
Redshift | 0.001231 ± 0.000004 [1] |
Heliocentric radial velocity | +369 ± 1 km/s [1] |
Distance | 29.72 ± 0.5 Mly [1] |
Apparent magnitude (V) | 11.1 |
Absolute magnitude (V) | 11.86 [1] |
Characteristics | |
Type | SB(s)c |
Apparent size (V) | 10.5′ × 2′ [1] |
Other designations | |
NGC 7640 |
NGC 7640 is a barred spiral galaxy in the constellation of Andromeda. Discovered on October 17, 1786 by the English astronomer William Herschel. The galaxy has an 11th visible magnitude and is located about 30 million light-years from Earth.
NGC 7640 might not look much like a spiral, but this is due to the orientation (edge on) of the galaxy with respect to an observer on Earth. There is evidence that this galaxy has experienced an interaction with another galaxy in the (astronomically) recent past. [2]
NGC 206 is a bright star cloud in the Andromeda Galaxy, and the brightest star cloud in Andromeda when viewed from Earth.
The Atlas of Peculiar Galaxies is a catalog of peculiar galaxies produced by Halton Arp in 1966. A total of 338 galaxies are presented in the atlas, which was originally published in 1966 by the California Institute of Technology. The primary goal of the catalog was to present photographs of examples of the different kinds of peculiar structures found among galaxies.
NGC 4565 is an edge-on spiral galaxy about 30 to 50 million light-years away in the constellation Coma Berenices. It lies close to the North Galactic Pole and has a visual magnitude of approximately 10. It is known as the Needle Galaxy for its narrow profile. First recorded in 1785 by William Herschel, it is a prominent example of an edge-on spiral galaxy.
NGC 278 is an isolated spiral galaxy in the northern circumpolar constellation of Cassiopeia, near the southern constellation boundary with Andromeda. It lies at a distance of approximately 39 megalight-years from the Milky Way, giving it a physical scale of 190 ly (58 pc) per arcsecond. The galaxy was discovered on December 11, 1786 by German-born astronomer William Herschel. J. L. E. Dreyer described it as, "considerably bright, pretty large, round, 2 stars of 10th magnitude near".
NGC 13 is a spiral galaxy in the constellation Andromeda. It is estimated to be about 220 million light-years away from the Sun. It was discovered on November 26, 1790, by William Herschel.
NGC 39 is an unbarred spiral galaxy in the constellation Andromeda. It was discovered in 1790.
The New General Catalogue object NGC 48 is a barred spiral galaxy located approximately 79.3 million light-years from the Solar System in the constellation Andromeda.
Arp 271 is a pair of similarly sized interacting spiral galaxies, NGC 5426 and NGC 5427, in the constellation of Virgo. It is not certain whether the galaxies are going to eventually collide or not. They will continue interacting for tens of millions of years, creating new stars as a result of the mutual gravitational attraction between the galaxies, a pull seen in the bridge of stars already connecting the two. Located about 130 million light-years away, the Arp 271 pair is about 130,000 light-years across. It was originally discovered in 1785 by William Herschel. It is speculated, that the Milky Way will undergo a similar collision in about five billion years with the neighbouring Andromeda Galaxy, which is currently located about 2.6 million light-years away.
NGC 4527 is a spiral galaxy in the constellation Virgo. It is a member of the M61 Group of galaxies, which is a member of the Virgo II Groups, a series of galaxies and galaxy clusters strung out from the southern edge of the Virgo Supercluster.
NGC 169 is a spiral galaxy located in the constellation Andromeda. It was discovered on September 18, 1857 by R. J. Mitchell.
NGC 181 is a galaxy, likely a spiral galaxy located in the constellation Andromeda. It was discovered on October 6, 1883 by Édouard Stephan.
NGC 184 is a spiral galaxy located in the constellation Andromeda. It was discovered on October 6, 1883, by Édouard Stephan.
NGC 218, also known as UGC 480, is a spiral galaxy located approximately 500 million light-years from the Sun in the constellation Andromeda. It was discovered on October 17, 1876 by Édouard Stephan, and is interacting with the galaxy PGC 2726.
NGC 226 is a spiral galaxy located approximately 216 million light-years from the Sun in the constellation Andromeda. It was discovered on December 21, 1786, by William Herschel.
NGC 228 is a spiral galaxy located in the constellation Andromeda. It was discovered on October 10, 1879 by Édouard Stephan.
NGC 389 is a lenticular galaxy located approximately 239 million light-years from the Solar System in the constellation Andromeda. It was discovered on September 6, 1885 by Lewis Swift. It was described by Dreyer as "extremely faint, extremely small, round, star near."
NGC 425 is a spiral galaxy in the constellation of Andromeda. It was discovered on 29 October 1866 by Truman Safford.
NGC 480 is a spiral galaxy located about 546 million light-years away from Earth in the constellation Cetus. NGC 480 was discovered by American astronomer Francis Leavenworth In 1886.
NGC 468 is a spiral galaxy in the constellation Pisces. Located approximately 209 million light-years from Earth, it was discovered by John Frederick William Herschel in 1827.
NGC 477 is a spiral galaxy in the constellation Andromeda. It is located approximately 250 million light-years from Earth and was discovered on October 18, 1786 by astronomer William Herschel.