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NGC 2688 | |
---|---|
Observation data (J2000 epoch) | |
Constellation | Ursa Major |
Right ascension | 08h 55m 11.606s [1] |
Declination | +49° 07′ 21.46″ [1] |
Redshift | 0.05204 0.00001 |
Heliocentric radial velocity | 15,190 km/s |
Distance | 758 Mly (232.4 Mpc) |
Apparent magnitude (V) | 15.8 |
Characteristics | |
Type | Sb |
Size | 154,000 ly |
Other designations | |
PGC 25048, 2MASX J08551161+4907218, MCG+08-16-040, SDSS J085511.60+490721.3 |
NGC 2688 is a spiral galaxy located in Ursa Major. [2] [3] [1] It is located 758 million light-years away from the Solar System and is moving away at a speed of 15,190 km/s. [4] NGC 2688 was found by R.J. Mitchell who was an Irish astronomer and assistant to William Parsons. [5] When Mitchell first saw the object, he commented it as very small and faint. According to Professor Seligman, the galaxy is classified as a lenticular galaxy rather than a spiral galaxy. [5]
NGC 3953 is a barred spiral galaxy located in the constellation Ursa Major. It was discovered by Pierre Méchain on 12 March 1781. The galaxy is known to exhibit an inner ring structure that encircles the bar. NGC 3953 is a member of the M109 Group, a large group of galaxies located within the constellation Ursa Major that may contain over 50 galaxies.
NGC 4051 is an intermediate spiral galaxy in the constellation of Ursa Major. It was discovered on 6 February 1788 by John Herschel.
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 3718, also called Arp 214, is a galaxy located approximately 52 million light years from Earth in the constellation Ursa Major. It is either a lenticular or spiral galaxy.
NGC 4145 is a barred spiral galaxy located in the Ursa Major galaxy cluster, 68 million light years from the Earth. The galaxy has little star formation, except on its outer edges. Due to the loss of energy that occurs without star formation, some astronomers predict that the galaxy will degenerate into a lenticular galaxy in the near future. However, the galaxy's interaction with NGC 4151 may "maintain [its] star formation".
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 4907 is a barred spiral galaxy located about 270 million light-years away in the constellation of Coma Berenices. It is also classified as a LINER galaxy. NGC 4907 was discovered by astronomer Heinrich d'Arrest on May 5, 1864. The galaxy is a member of the Coma Cluster, located equidistant between NGC 4928 and NGC 4829.
NGC 4440 is a barred spiral galaxy located about 55 million light-years away in the constellation of Virgo. NGC 4440 was discovered by astronomer William Herschel on April 17, 1784. It is a member of the Virgo Cluster.
NGC 4498 is a barred spiral galaxy located about 50 million light-years away in the constellation Coma Berenices. NGC 4498 was discovered by astronomer William Herschel on March 21, 1784. NGC 4498 is a member of the Virgo Cluster.
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 3972 is a spiral galaxy located in the northern constellation of Ursa Major. It was discovered by William Herschel on April 14, 1789. This galaxy is located 66 million light years away and is receding with a heliocentric radial velocity of 846 km/s. It is a member of the NGC 3992 Group of galaxies.
NGC 3558 is an elliptical or a lenticular galaxy located 440 million light-years away in the constellation Ursa Major. It was discovered by the astronomer Heinrich d'Arrest on April 15, 1866. It is a member of the galaxy cluster Abell 1185 and is classified as a LINER galaxy.
NGC 3928, also known as the Miniature Spiral, is a lenticular galaxy, sometimes classified as a dwarf spiral galaxy, in the constellation Ursa Major. It was discovered by William Herschel on March 9, 1788.
NGC 2603 is a small compact spiral galaxy located 787 million light-years away in the constellation of Ursa Major from the Solar System. It was discovered by George Johnstone Stoney, an Irish astronomer, on February 9th, 1850. NGC 2603 has an estimated diameter of 81,000 light-years. It contains a narrow-line active galactic nucleus. The Hyperleda database associates NGC 2603 and NGC 2606 as one single galaxy. NASA/IPAC database on the other hand, classifies NGC 2603 as galaxy PGC 3133653.
NGC 2606 is a spiral galaxy in the Ursa Major constellation. It lies 648 million light-years away from our home galaxy, the Milky Way. The galaxy was first discovered by John Herschel, a British astronomer on 16th February 1831. According to SIMBAD database, it is classified as a LINER galaxy and a Seyfert type 2 galaxy by Hyperleda.
NGC 5278 is a spiral galaxy in the constellation Ursa Major. It was discovered by German-British astronomer William Herschel in 1789.
NGC 5279 is a spiral galaxy in the constellation Ursa Major. It was discovered by German-British astronomer William Herschel in 1789. NGC 5279 is in gravitational interaction with the galaxy NGC 5278. This pair of galaxies appears in Halton Arp's Atlas of Peculiar Galaxies under the designation Arp 239. The luminosity class of NGC 5279 is I1. NGC 5279 is a galaxy whose core shines in the ultraviolet region. It is listed in the Markarian catalog under the designation Mrk 271.
NGC 3978 is a large intermediate spiral galaxy with a bar located in the constellation of Ursa Major. It is located 460 million light-years away from the Solar System and was discovered by William Herschel on March 19, 1790, but also observed by John Herschel on April 14, 1831.
NGC 3950 is an elliptical galaxy of type E, in Ursa Major. Its redshift is 0.074602, meaning NGC 3950 is 1.03 billion light-years or 316 Mpc from Earth, which is within the Hubble distance values. This high redshift makes NGC 3950 one of the furthest New General Catalogue objects.