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| NGC 7777 | |
|---|---|
 NGC 7777 (SDSS DR14) | |
| Observation data (J2000.0 [1] epoch) | |
| Constellation | Pegasus [2] |
| Right ascension | 23h 53m 12.488s [1] |
| Declination | +28° 17′ 00.19″ [1] |
| Characteristics | |
| Type | S0 |
| Apparent size (V) | 1.259′ × 0.692′ [2] |
| Other designations | |
| LEDA 72744, UGC 12829, PGC 72744 | |
NGC 7777 is a lenticular galaxy [1] in the constellation of Pegasus. [2]
A lenticular galaxy is a type of galaxy intermediate between an elliptical and a spiral galaxy in galaxy morphological classification schemes. It contains a large-scale disc but does not have large-scale spiral arms. Lenticular galaxies are disc galaxies that have used up or lost most of their interstellar matter and therefore have very little ongoing star formation. They may, however, retain significant dust in their disks. As a result, they consist mainly of aging stars. Despite the morphological differences, lenticular and elliptical galaxies share common properties like spectral features and scaling relations. Both can be considered early-type galaxies that are passively evolving, at least in the local part of the Universe. Connecting the E galaxies with the S0 galaxies are the ES galaxies with intermediate-scale discs.
NGC 404 is a field galaxy located about 10 million light years away in the constellation Andromeda. It was discovered by William Herschel in 1784, and is visible through small telescopes. NGC 404 lies just beyond the Local Group and does not appear gravitationally bound to it. It is located within 7 arc-minutes of second magnitude star Mirach, making it a difficult target to observe or photograph and granting it the nickname "Mirach's Ghost".
NGC 4650A is a polar-ring lenticular galaxy located in the constellation Centaurus. It should not be confused with the spiral galaxy NGC 4650, which shares almost the same radial distance as NGC 4650A. The real distance between both galaxies is only about 6 times the optical radius of NGC 4650.
NGC 4984 is an intermediate lenticular galaxy exhibiting a double ring structure in the constellation Virgo. It is a member of the NGC 4856 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. In December 2011, supernova 2011iy was discovered in it.
NGC 5838 is a lenticular galaxy in the constellation Virgo, discovered by William Herschel in 1786. It is a member of the Virgo III Groups, a series of galaxies and galaxy clusters strung out to the east of the Virgo Supercluster of galaxies.
NGC 5890 is an unbarred lenticular galaxy in the constellation Libra. It was discovered in April 1785 by Ormond Stone.
NGC 2291 is an unbarred lenticular galaxy in the constellation Gemini. It was discovered by John Herschel on January 22, 1827. The visual magnitude is 13, and the apparent size is 1.0 by 0.8 arc minutes.
NGC 4452 is an edge-on lenticular galaxy that is part of the Virgo Cluster. NGC 4452 is about 60 million light-years (18 Mpc) away from Earth and 35 kly (11 kpc) in diameter. This galaxy was first seen by William Herschel in 1784 with his 47 cm (19 in) telescope.
NGC 6861 is a lenticular galaxy located in the constellation Telescopium. It is the second-brightest object in the constellation. Unlike most lenticular galaxies, which tend to be mostly devoid of both gas and dust, NGC 6861 exhibits a thick obscuring ring of dust around the nucleus where star formation is occurring. The galaxy was discovered by Scottish astronomer James Dunlop, in 1826. NGC 6861 is interacting with NGC 6868, and it is predicted that they will eventually merge.
NGC 322 is a lenticular galaxy located approximately 318 million light-years from the Solar System in the constellation Phoenix. It was discovered on September 5, 1834 by John Herschel. It was described by Dreyer as "very faint, very small, round, a little brighter middle, 3 stars to west." It apparently seems to be interacting with PGC 95427, another galaxy.
NGC 403 is a lenticular galaxy located in the constellation of Pisces. It was discovered on August 29, 1862 by Heinrich d'Arrest.
NGC 7013 is a relatively nearby spiral or lenticular galaxy estimated to be around 37 to 41.4 million light-years away from Earth in the constellation of Cygnus. NGC 7013 was discovered by English astronomer William Herschel on July 17, 1784 and was also observed by his son, astronomer John Herschel on September 15, 1828.
NGC 463 is a lenticular galaxy located about 264 million light-years away from Earth in the constellation Pisces. It was discovered by French astronomer Édouard Stephan on December 16, 1871.
NGC 466 is a lenticular galaxy located about 227 million light-years away from Earth in the constellation Tucana. NGC 466 was discovered by astronomer John Herschel on October 3, 1836.
NGC 498 is a lenticular galaxy located about 260 million light-years away from Earth, in the constellation Pisces. NGC 498 was discovered by astronomer R. J. Mitchell on October 23, 1856.
NGC 5084 is a lenticular galaxy in the constellation of Virgo. It is located at a distance of about 80 million light years from Earth, which, given its apparent dimensions, means that NGC 5084 is at least 200,000 light years across. It is one of the largest and most massive galaxies in the Virgo Supercluster. William Herschel discovered it on March 10, 1785. It is a member of the NGC 5084 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. The galaxy is seen nearly edge-on, with inclination 86°, and features a warped disk and large quantities of HI gas extending along the disk, probably accumulated after multiple accretions of smaller galaxies.
NGC 4546 is a lenticular field galaxy located in the direction of the constellation Virgo, with a total population of globular clusters estimated at about 390. It 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 4179 is a lenticular galaxy located in the constellation Virgo. It was discovered by William Herschel on January 14, 1784. It is a member of the NGC 4179 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 839 is a lenticular galaxy located in the constellation Cetus. It was discovered November 28, 1785 in a sky survey by Wilhelm Herschel. It is one of the galaxies that are part of the quadruplet family HGC 16, along with the unbarred lenticular galaxy NGC 838.
NGC 3599 is a lenticular galaxy located in the constellation Leo. It was discovered by William Herschel on March 14, 1784.
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