NGC 4162
Galaxy in the constellation Coma Berenices
From Wikipedia, the free encyclopedia
NGC 4162 is a spiral galaxy in the constellation of Coma Berenices. Its velocity with respect to the cosmic microwave background is 2,878±21 km/s, which corresponds to a Hubble distance of 138.5 ± 9.8 Mly (42.45 ± 2.99 Mpc).[1] However, 19 non-redshift measurements give a closer mean distance of 118.00 ± 5.96 Mly (36.179 ± 1.828 Mpc).[2] It was discovered by German-British astronomer William Herschel on 10 April 1785.[3]
| NGC 4162 | |
|---|---|
NGC 4162 imaged by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Coma Berenices |
| Right ascension | 12h 11m 52.5190s[1] |
| Declination | +24° 07′ 25.346″[1] |
| Redshift | 0.008579±0.000005[1] |
| Heliocentric radial velocity | 2,572±1 km/s[1] |
| Distance | 118.00 ± 5.96 Mly (36.179 ± 1.828 Mpc)[1] |
| Apparent magnitude (V) | 12.87[1] |
| Characteristics | |
| Type | (R)SA(rs)bc[1] |
| Size | ~85,800 ly (26.31 kpc) (estimated)[1] |
| Apparent size (V) | 2.3′ × 1.4′[1] |
| Other designations | |
| IRAS 12093+2423, UGC 7193, MCG +04-29-046, PGC 038851, CGCG 128-051[1] | |
NGC 4162 has an 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.[4]
Supernovae
Three supernovae have been observed in NGC 4162:
- SN 1965G (type unknown, mag. 14) was discovered by Mexican astronomer Guillermo Haro on 23 March 1965.[5][6]
- SN 2001hg (Type II, mag. 17.4) was discovered by Tim Puckett and Ajai Sehgal on 4 December 2001.[7][8]
- SN 2019edo (Type II, mag. 16.7) was discovered by ASAS-SN on 27 April 2019.[9][10]
