NGC 5516
Galaxy in the constellation Centaurus
From Wikipedia, the free encyclopedia
NGC 5516 is a lenticular galaxy in the constellation of Centaurus. Its velocity with respect to the cosmic microwave background is 4,328±25 km/s, which corresponds to a Hubble distance of 208.2 ± 14.6 Mly (63.83 ± 4.49 Mpc).[1] However, three non-redshift measurements give a farther mean distance of 226.68 ± 13.74 Mly (69.500 ± 4.212 Mpc).[3] It was discovered by British astronomer John Herschel on 1 July 1834.[4]
| NGC 5516 | |
|---|---|
NGC 5516 imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Centaurus |
| Right ascension | 14h 15m 54.7000s[1] |
| Declination | −48° 06′ 53.257″[1] |
| Redshift | 0.013753±0.0000670[1] |
| Heliocentric radial velocity | 4,123±20 km/s[1] |
| Distance | 226.68 ± 13.74 Mly (69.500 ± 4.212 Mpc)[1] |
| Group or cluster | LDC 1050[2] |
| Apparent magnitude (V) | 13.00[1] |
| Characteristics | |
| Type | SA0-(s)[1] |
| Size | ~232,300 ly (71.21 kpc) (estimated)[1] |
| Apparent size (V) | 1.8′ × 1.2′[1] |
| Other designations | |
| ESO 221- G 034, 2MASX J14155467-4806535, PGC 50960[1] | |
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.[2][5]
LDC 1050 Group
Supernovae
Two supernovae have been observed in NGC 5516:
- AT 2017kdz (also known as MASTER OT J141551.21-480802.6) (Type Ia, mag. 16.4) was discovered by MASTER robotic Net on 9 April 2017.[8][9][10]
- SN 2026dez (Type Ia, mag. 18.642) was discovered by ATLAS on 14 February 2026.[11] This supernova has a significant projected separation of 110 kly (34 kpc) from NGC 5516.[12]