NGC 1056

NGC 1056
NGC 1056 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationAries
Right ascension02h 42m 48.2738s
Declination+28° 34′ 26.502″
Redshift0.004920±0.00000334
Heliocentric radial velocity1,475±1 km/s
Distance91.16 ± 5.50 Mly (27.950 ± 1.685 Mpc)
Apparent magnitude (V)13.32
Characteristics
TypeSa?
Size~68,100 ly (20.89 kpc) (estimated)
Apparent size (V)2.3′ × 1.1′
Other designations
IRAS 02398+2821, 2MASX J02424828+2834273, UGC 2183, MCG +05-07-032, Mrk 1183, PGC 10272, CGCG 505-036

NGC 1056 is a spiral galaxy in the constellation of Aries. Its velocity with respect to the cosmic microwave background is 1,257±15 km/s, which corresponds to a Hubble distance of 60.5 ± 4.3 Mly (18.55 ± 1.32 Mpc). However, 10 non-redshift measurements give a much farther mean distance of 91.16 ± 5.50 Mly (27.950 ± 1.685 Mpc). It was discovered by German-British astronomer William Herschel on 26 October 1786.

NGC 1056 is 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.

NGC 1056 is a galaxy whose nucleus shines in the ultraviolet range, and is thus listed in the Markarian catalogue as Mrk 1183.

Supernova

One supernova has been observed in NGC 1056: SN 2011aq (Type II, mag. 18) was discovered by the Lick Observatory Supernova Search (LOSS) on 24 January 2011.

See also

References

  1. 1 2 3 4 5 6 7 8 9 10 "Results for object NGC 1056". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 30 October 2026.
  2. 1 2 "Distance Results for NGC 1056". NASA/IPAC Extragalactic Database. NASA. Retrieved 30 October 2026.
  3. ↑ Herschel, William (1789). "Catalogue of a Second Thousand of New Nebulae and Clusters of Stars; with a Few Introductory Remarks on the Construction of the Heavens". Philosophical Transactions of the Royal Society of London. 79: 212–255. Bibcode:1789RSPT...79..212H. doi:10.1098/rstl.1789.0021.
  4. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 1056". Celestial Atlas. Retrieved 30 October 2026.
  5. ↑ "NGC 1056". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 30 October 2026.
  6. ↑ Markaryan, B. E.; Lipovetskii, V. A.; Stepanyan, Dzh A. (1979). "Galaxies with Ultraviolet Continuum - Part Twelve". Astrophysics. 15 (2): 130. Bibcode:1979Ap.....15..130M. doi:10.1007/BF01006033.
  7. ↑ Cenko, S. B.; Li, W.; Filippenko, A. V.; Silverman, J. M. (2011). "Supernova 2011aq in NGC 1056 = PSN J02424814+2834258". Central Bureau Electronic Telegrams (2671): 1. Bibcode:2011CBET.2671....1C.
  8. ↑ "SN 2011aq". Transient Name Server. IAU. Retrieved 30 October 2026.

Notes