NGC 5516 is a lenticular galaxy in the constellation of Centaurus. Its velocity with respect to the cosmic microwave background is , which corresponds to a Hubble distance of . However, three non-redshift measurements give a farther mean distance of . It was discovered by British astronomer John Herschel on 1 July 1834.
NGC 5516 has a possible active galactic nucleus, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.
LDC 1050 Group NGC 5516 is a member of a group of galaxies known as LDC 1050. This group contains six galaxies, including , , , , and .
Supernovae Two supernovae have been observed in NGC 5516: AT 2017kdz (also known as MASTER OT J141551.21-480802.6) (TypeIa, mag. 16.4) was discovered by MASTER robotic Net on 9 April 2017. SN 2026dez (Type Ia, mag. 18.642) was discovered by ATLAS on 14 February 2026. This supernova has a significant projected separation of from NGC 5516.
See also List of NGC objects (5001–6000)
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