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NGC 3443
NGC 3443 is a spiral galaxy in the constellation of Leo_(constellation), Leo. Its velocity with respect to the cosmic microwave background is 1468 ± 24 km/s, which corresponds to a Hubble%27s_law, Hubble distance of 21.66 ± 1.56 Megaparsec, Mpc (∼70.6 million light-years). It was discovered by American astronomer Lewis Swift on April 24, 1887. One supernova has been observed in NGC 3443: SN 2024ehs (Type_II_supernova, type II, mag. 18.1). NGC 3370 Group According to A.M. Garcia, the galaxy NGC 3443 is a member of the NGC 3370 group (also known as Lyons_Groups_of_Galaxies, LGG 219) that includes NGC 3370, NGC 3454, NGC 3455, and UGC 5945. See also * List of NGC objects (3001–4000) References External links * {{Ngc35 NGC objects, 3443 Principal Galaxies Catalogue objects, 032671 UGC objects, 06000 Leo_(constellation) Astronomical objects discovered in 1887 Discoveries by Lewis Swift MCG objects, +03-28-025 Spiral galaxies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New General Catalogue
The ''New General Catalogue of Nebulae and Clusters of Stars'' (abbreviated NGC) is an astronomical catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888. The NGC contains 7,840 objects, including galaxies, star clusters and emission nebulae. Dreyer published two supplements to the NGC in 1895 and 1908, known as the ''Index Catalogues'' (abbreviated IC), describing a further 5,386 astronomical objects. Thousands of these objects are best known by their NGC or IC numbers, which remain in widespread use. The NGC expanded and consolidated the cataloguing work of William and Caroline Herschel, and John Herschel's ''General Catalogue of Nebulae and Clusters of Stars''. Objects south of the celestial equator are catalogued somewhat less thoroughly, but many were included based on observation by John Herschel or James Dunlop. The NGC contained multiple errors, but attempts to eliminate them were made by the ''Revised New General Catalogue'' (RNGC) by Jack W. Sulent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
