NGC 5061
Galaxy in the constellation Hydra
From Wikipedia, the free encyclopedia
NGC 5061 is an elliptical galaxy in the constellation of Hydra. Its velocity with respect to the cosmic microwave background is 2,383±28 km/s, which corresponds to a Hubble distance of 114.6 ± 8.2 Mly (35.14 ± 2.51 Mpc).[1] However, 25 non-redshift measurements give a closer mean distance of 78.54 ± 3.36 Mly (24.080 ± 1.031 Mpc).[2] It was discovered by German-British astronomer William Herschel on 28 March 1786.[3][4]
| NGC 5061 | |
|---|---|
NGC 5061 imaged by Pan-STARRS | |
| Observation data (J2000 epoch) | |
| Constellation | Hydra |
| Right ascension | 13h 18m 05.1444s[1] |
| Declination | −26° 50′ 14.149″[1] |
| Redshift | 0.006945±0.0000630[1] |
| Heliocentric radial velocity | 2,082±19 km/s[1] |
| Distance | 78.54 ± 3.36 Mly (24.080 ± 1.031 Mpc)[1] |
| Group or cluster | NGC 5061 group (LGG 341) |
| Apparent magnitude (V) | 11.44[1] |
| Characteristics | |
| Type | E0[1] |
| Size | ~178,100 ly (54.61 kpc) (estimated)[1] |
| Apparent size (V) | 3.5′ × 3.0′[1] |
| Other designations | |
| ESO 508- G 038, MCG -04-31-048, PGC 46330[1] | |
NGC 5061 is a Seyfert II galaxy, i.e. it has a quasar-like nucleus with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.[5]
NGC 5061 group
Supernovae
Two supernovae have been observed in NGC 5061:
- SN 1996X (Type Ia, mag. 13) was discovered by Robert Evans and Kesao Takamizawa on 12 April 1996.[7][8] At magnitude 13, it was the brightest supernova of 1996.[9]
- SN 2005cn (Type Ia, mag. 14.6) was discovered by the Brazilian Supernovae Search Team (BRASS) on 19 June 2005.[10][11]
