NGC 4653

NGC 4653 is an intermediate spiral galaxy in the constellation of Virgo. Its velocity with respect to the cosmic microwave background is 2,960±24 km/s, which corresponds to a Hubble distance of 142.4 ± 10.0 Mly (43.66 ± 3.08 Mpc).^[1] However, two non-redshift measurements give a closer distance of 131.11 ± 3.59 Mly (40.200 ± 1.100 Mpc).^[2] It was discovered by German-British astronomer William Herschel on 11 April 1787.^[3]

NGC 4653
NGC 4653 imaged by SDSS
Observation data (J2000 epoch)
Constellation	Virgo
Right ascension	12h 43m 50.9247s[1]
Declination	−00° 33′ 40.241″[1]
Redshift	0.008742±0.000013[1]
Heliocentric radial velocity	2,621±4 km/s[1]
Distance	131.11 ± 3.59 Mly (40.200 ± 1.100 Mpc)[1]
Group or cluster	NGC 4642 Group (LDC 913)
Apparent magnitude (V)	13.4[1]
Characteristics
Type	SAB(rs)cd[1]
Size	~117,800 ly (36.13 kpc) (estimated)[1]
Apparent size (V)	1.77′ × 1.38′[1]
Other designations
IRAS 12412-0017, UGC 7900, MCG +00-33-006, PGC 42847, CGCG 015-009[1]

NGC 4642 Group

NGC 4653 is a member of the NGC 4642 Group (also known as LDC 913). This trio of galaxies includes NGC 4642 and NGC 4690.^[4][5] A study published in 2022 claims that NGC 4653 and NGC 4642 form a physical pair, separated by about 50 kpc, and that there is a high probability of a merger in the near future.^[6]

Supernovae

Three supernovae have been observed in NGC 4653:

• SN 1999gk (Type II, mag. 15.7) was discovered by Perry Berlind on 15 December 1999.^[7][8]
• SN 2009ik (Type Ia, mag. 15.3) was discovered by Berto Monard on 22 August 2009.^[9][10]
• SN 2025mqc (Type Ib, mag. 18.78) was discovered by ATLAS on 31 May 2025.^[11]

See also

• List of NGC objects (4001-5000)