NGC 4162

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]

See also

• List of NGC objects (4001–5000)