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  • 21 Aug, 2019

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NGC 6492

NGC 6492 is a spiral galaxy in the constellation of Pavo. Its velocity with respect to the cosmic microwave background is 4351 ± 8 km/s, which corresponds to a Hubble distance of 209.3 ± 14.6 Mly (64.17 ± 4.49 Mpc). In addition, five non redshift measurements give a distance of 183.10 ± 12.28 Mly (56.140 ± 3.766 Mpc). The galaxy was discovered by British astronomer John Herschel on 22 July 1835.

The SIMBAD database lists NGC 6492 as a Seyfert II Galaxy, i.e. it has a quasar-like nucleus with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.

Supernovae

Two supernovae have been observed in NGC 6492:

  • South African amateur astronomer Berto Monard discovered SN 2004fv (type Ia, mag. 14.8) on 4 November 2004.
  • The GOTO telescope array discovered SN 2024sky (type II, mag. 16.65) on 19 August 2024.

See also

References

  1. ^ "Results for object NGC 6492". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 13 November 2024.
  2. ^ "Distance Results for NGC 6492". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 13 November 2024.
  3. ^ Seligman, Courtney. "NGC 6492". Celestial Atlas. Retrieved 13 November 2024.
  4. ^ "NGC 6492". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 13 November 2024.
  5. ^ Monard, L. A. G.; Africa, S. (2004). "Supernova 2004fv in NGC 6492". International Astronomical Union Circular (8430): 1. Bibcode:2004IAUC.8430....1M.
  6. ^ "SN 2004fv". Transient Name Server. IAU. Retrieved 13 November 2024.
  7. ^ "SN 2024sky". Transient Name Server. IAU. Retrieved 13 November 2024.