NGC 7637
NGC 7637 imaged by Legacy Surveys
Observation data (J2000 epoch)
Constellation	Octans
Right ascension	23h 26m 27.6374s[1]
Declination	−81° 54′ 41.516″[1]
Redshift	0.012402[1]
Heliocentric radial velocity	3718 ± 3 km/s[1]
Distance	178.5 ± 12.5 Mly (54.73 ± 3.83 Mpc)[1]
Apparent magnitude (V)	13[1]
Characteristics
Type	SA(r)c[1]
Size	~162,500 ly (49.83 kpc) (estimated)[1]
Apparent size (V)	2.1′ × 1.9′[1]
Other designations
ESO 012- G 001, IRAS 23226-8211, 2MASX J23262765-8154417, PGC 71440[1]

NGC 7637 is a spiral galaxy in the constellation of Octans. Its velocity with respect to the cosmic microwave background is 3711 ± 3 km/s, which corresponds to a Hubble distance of 178.5 ± 12.5 Mly (54.73 ± 3.83 Mpc).^[1] It was discovered by British astronomer John Herschel on 17 October 1835.^[2]

Supernovae

Three supernovae have been observed in NGC 7637:

• SN 1992ao (Type II, mag. 17) was discovered by Robert H. McNaught on 28 July 1992.^[3][4]
• SN 2012ah (Type Ia, mag. 14.8) was discovered by Stuart Parker on 21 February 2012.^[5][6]
• SN 2022iwt (Type II, mag. 16.825) was discovered by ATLAS on 29 April 2022.^[7]

See also

• List of NGC objects (7001–7840)

References

External links

• Media related to NGC 7637 at Wikimedia Commons
• NGC 7637 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images