NGC 7171

NGC 7171
NGC 7171 imaged by Pan-STARRS
Observation data (J2000 epoch)
ConstellationAquarius
Right ascension22h 01m 02.012s
Declination−13° 16′ 10.901″
Redshift0.009069
Heliocentric radial velocity2719 ± 6 km/s
Distance114.9 ± 8.1 Mly (35.22 ± 2.49 Mpc)
Apparent magnitude (V)12.2
Characteristics
TypeSB(rs)b
Size~97,600 ly (29.93 kpc) (estimated)
Apparent size (V)2.6′ × 1.5′
Other designations
IRAS 21583-1330, 2MASX J22010200-1316108, MCG -02-56-005, PGC 67839

NGC 7171 is a barred spiral galaxy in the constellation of Aquarius. Its velocity with respect to the cosmic microwave background is 2388 ± 24 km/s, which corresponds to a Hubble distance of 35.22 ± 2.49 Mpc (~115 million light-years). It was discovered by German–British astronomer William Herschel on 12 August 1787.

According to the SIMBAD database, NGC 7171 is an active Seyfert II galaxy.

One supernova has been observed in NGC 7171: SN 2023yoo (Type Ia, mag. 17.339) was discovered by ATLAS on 28 November 2023.

See also

References

  1. 1 2 3 4 5 6 7 8 9 10 11 "Results for object NGC 7171". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 29 July 2024.
  2. ↑ "NGC 7171". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 28 June 2025.
  3. ↑ "SN 2023yoo". Transient Name Server. IAU. Retrieved 14 December 2024.