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Markarian's Chain is a chain of galaxies in the Virgo Cluster, named after Benjamin Markarian; Robert's Quartet is a group of galaxies in Phoenix, named after Robert Freedman. Seyfert's Sextet is a group of galaxies in Serpens, named after Carl Keenan Seyfert. Stephan's Quintet is a group of galaxies in Pegasus, named after Édouard Stephan.
French astronomers began calling it Herschel before German Johann Bode proposed the name Uranus, after the Greek god. The name "Uranus" did not come into common usage until around 1850. Starting in 1801, asteroids were discovered between Mars and Jupiter. The first few (Ceres, Pallas, Juno, Vesta) were initially considered planets. As more and ...
Size (left) and distance (right) of a few well-known galaxies put to scale. The following is a list of notable galaxies.. There are about 51 galaxies in the Local Group (see list of nearest galaxies for a complete list), on the order of 100,000 in the Local Supercluster, and an estimated 100 billion in all of the observable universe.
Galaxies by type. List of spiral galaxies; List of ring galaxies; List of polar-ring galaxies; List of quasars; Galaxies by association. List of largest galaxies; List of nearest galaxies; Satellite galaxies of the Milky Way; Other characteristics. List of galaxies named after people; List of galaxies with richest globular cluster systems
This is a list of known galaxies within 3.8 megaparsecs (12.4 million light-years) of the Solar System, in ascending order of heliocentric distance, or the distance to the Sun. This encompasses about 50 major Local Group galaxies, and some that are members of neighboring galaxy groups , the M81 Group and the Centaurus A/M83 Group , and some ...
Notable galaxies with diameters 700,000 light-years or less Galaxy name/designation Major axis diameter (in light-years) Minor axis diameter (in light years) Morphology Estimation method Link for object ESO 444-46 (ESO 444-G 046) [a] 670,700 382,300 cD4; E4; BrClG 27.0 B-mag arcsec −2: NED: Tadpole Galaxy: 558,400 111,700 SB(s)c pec 25.0 B ...
Name based on the brightest galaxy in the group when that name is commonly used for identification (e.g. the M81 Group); this is only applicable to groups of galaxies within approximately 50 Mpc; The most commonly-used catalog number (e.g. Abell 3266) Note that group and cluster names are proper nouns.
Many dwarf galaxies may orbit a single larger galaxy; the Milky Way has at least a dozen such satellites, with an estimated 300–500 yet to be discovered. [107] Most of the information we have about dwarf galaxies come from observations of the local group, containing two spiral galaxies, the Milky Way and Andromeda, and many dwarf galaxies.