NGC 7427

NGC 7427 is a lenticular galaxy in the constellation of Pegasus. Its velocity with respect to the cosmic microwave background is 9336 ± 35 km/s, which corresponds to a Hubble distance of 137.70 ± 9.66 Mpc (~449 million light-years).^[1] It was discovered by Russian astronomer Otto Wilhelm von Struve on 22 November 1865.^[2]

NGC 7427
NGC 7427 imaged by SDSS
Observation data (J2000 epoch)
Constellation	Pegasus
Right ascension	22h 57m 09.9277s[1]
Declination	+08° 30′ 20.435″[1]
Redshift	0.032376[1]
Heliocentric radial velocity	9706 ± 24 km/s[1]
Distance	449.1 ± 31.5 Mly (137.70 ± 9.66 Mpc)[1]
Apparent magnitude (V)	15.1[1]
Characteristics
Type	SO[1]
Size	~97,100 ly (29.76 kpc) (estimated)[1]
Apparent size (V)	0.7′ × 0.7′[1]
Other designations
2MASX J22570990+0830200, MCG +01-58-016, Mrk 521, PGC 70091, CGCG 405-018[1]

Supernovae

Two supernovae have been observed in NGC 7427:

• SN 2019uzd (Type Ia, mag. 18.94) was discovered by the Automatic Learning for the Rapid Classification of Events (ALeRCE) on 16 November 2019.^[3]
• SN 2023uma (Type Ia, mag. 18.13) was discovered by the Zwicky Transient Facility on 9 October 2023.^[4]

See also

• List of NGC objects (7001–7840)