NGC 5172

NGC 5172
NGC 5172 imaged by SDSS
Observation data (J2000 epoch)
ConstellationComa Berenices
Right ascension12h 29m 19.3104s
Declination+17° 03′ 06.901″
Redshift0.013443±0.00000300
Heliocentric radial velocity4,030±1 km/s
Distance164.63 ± 11.65 Mly (50.477 ± 3.572 Mpc)
Apparent magnitude (V)12.63
Characteristics
TypeSAB(rs)bc
Size~167,600 ly (51.39 kpc) (estimated)
Apparent size (V)3.3′ × 1.7′
Other designations
IRAS 13268+1718, 2MASX J13291914+1703061, UGC 8477, MCG +03-34-041, PGC 47330, CGCG 101-057

NGC 5172 is an intermediate spiral galaxy in the constellation of Coma Berenices. Its velocity with respect to the cosmic microwave background is 4,308±19 km/s, which corresponds to a Hubble distance of 207.2 ± 14.5 Mly (63.53 ± 4.46 Mpc). However, 13 non-redshift measurements give a closer mean distance of 164.63 ± 11.65 Mly (50.477 ± 3.572 Mpc). It was discovered by British astronomer John Herschel on 7 May 1826.

NGC 5172 has a possible 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.

According to Abraham Mahtessian, NGC 5172 and NGC 5190 [fr] form a pair of galaxies.

Supernovae

Two supernovae have been observed in NGC 5172:

See also

References

  1. 1 2 3 4 5 6 7 8 9 10 11 "Results for object NGC 5172". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 30 November 2025.
  2. ↑ "Distance Results for NGC 5172". NASA/IPAC Extragalactic Database. NASA. Retrieved 30 November 2025.
  3. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 5172". Celestial Atlas. Retrieved 30 November 2025.
  4. ↑ Asmus, D.; Greenwell, C. L.; Gandhi, P.; Boorman, P. G.; Aird, J.; Alexander, D. M.; Assef, R. J.; Baldi, R. D.; Davies, R. I.; Hönig, S. F.; Ricci, C.; Rosario, D. J.; Salvato, M.; Shankar, F.; Stern, D. (2020). "Local AGN survey (LASr): I. Galaxy sample, infrared colour selection, and predictions for AGN within 100 MPC". Monthly Notices of the Royal Astronomical Society. 494 (2): 1784. arXiv:2003.05959. Bibcode:2020MNRAS.494.1784A. doi:10.1093/mnras/staa766.
  5. ↑ "NGC 5172". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 30 November 2025.
  6. ↑ Mahtessian, A. P. (1998). "Groups of galaxies. III. Some empirical characteristics". Astrophysics. 41 (3): 308–321. Bibcode:1998Ap.....41..308M. doi:10.1007/BF03036100.
  7. ↑ Li, W. D.; Modjaz, M.; Treffers, R. R.; Filippenko, A. V.; Jha, S.; Garnavich, P.; Kirshner, R.; Berlind, P. (1998). "Supernova 1998cc in NGC 5172". International Astronomical Union Circular (6907): 1. Bibcode:1998IAUC.6907....1L.
  8. ↑ "SN 1998cc". Transient Name Server. IAU. Retrieved 30 November 2025.
  9. ↑ Weisz, D.; Modjaz, M.; Li, W. D. (2001). "Supernova 2001R in NGC 5172". International Astronomical Union Circular (7579): 1. Bibcode:2001IAUC.7579....1W.
  10. ↑ "SN 2001R". Transient Name Server. IAU. Retrieved 30 November 2025.