The New General Catalogue of Nebulae and Clusters of Stars (abbreviated as NGC) is a catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888. The NGC contains 7,840 objects, known as the NGC objects. It is one of the largest comprehensive catalogues, as it includes all types of deep space objects, including galaxies, star clusters, emission nebulae and absorption nebulae.
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NGC 5957
NGC 5957 is a spiral galaxy located in the constellation Serpens. It lies at a distance of about 100 million light years from Earth based on redshift-independent methods, which, given its apparent dimensions, means that NGC 5957 is about 75,000 light years across. It was discovered by Heinrich d'Arrest on April 29, 1865. NGC 5957 has a bar which is 0.96 arcminutes across. At the end of the bar lies an inner ring with a diameter of 0.94 arcminutes. From the ring emerge multiple spiral arms which form an outer ring with a diameter of 2.38 arcminutes. The nucleus of the galaxy has been found to be active and has been identified as a LINER. The nucleus emits H-alpha that can't be resolved. One supernova has been discovered in NGC 5957, SN 2025fvw. It was discovered by KÅichi Itagaki on 26 March 2025 at an apparent magnitude of 17.4. It was identified as a type Ia supernova. NGC 5957 forms a pair with NGC 5956. A. M. Garcia considers NGC 5970 a member of the group, naming it LGG 401. Other nearby galaxies include NGC 5953, NGC 5954, and NGC 5962.
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Wikipedia Page: NGC 5957
NGC 5957 at In-The-Sky website