NGC 5056

NGC 5056
NGC 5056 imaged by SDSS
Observation data (J2000 epoch)
ConstellationComa Berenices
Right ascension13h 16m 12.3527s
Declination+30° 57′ 01.239″
Redshift0.018653±0.000005
Heliocentric radial velocity5,592±1 km/s
Distance208.31 ± 10.46 Mly (63.867 ± 3.207 Mpc)
Group or cluster[M98j] 192
Apparent magnitude (V)13.7
Characteristics
TypeScd
Size~135,800 ly (41.65 kpc) (estimated)
Apparent size (V)1.7′ × 1.0′
Other designations
IRAS 13138+3112, UGC 8337, MCG +05-31-166, PGC 46180, CGCG 160-173

NGC 5056 is a spiral galaxy in the constellation of Coma Berenices. Its velocity with respect to the cosmic microwave background is 5,839±17 km/s, which corresponds to a Hubble distance of 280.9 ± 19.7 Mly (86.13 ± 6.03 Mpc). However, 39 non-redshift measurements give a closer mean distance of 208.31 ± 10.46 Mly (63.867 ± 3.207 Mpc). It was discovered by German-British astronomer William Herschel on 13 March 1785.

NGC 5056 is listed as having an active galactic nucleus.

According to Abraham Mahtessian, NGC 5056 and NGC 5065 [fr] form a pair of galaxies, known as [M98j] 192.

Supernova

One supernova has been observed in NGC 5056:

See also

References

  1. 1 2 3 4 5 6 7 8 9 10 11 "Results for object NGC 5056". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 2 August 2025.
  2. ↑ "Distance Results for NGC 5056". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 2 August 2025.
  3. ↑ Herschel, W. (1786). "Catalogue of One Thousand New Nebulae and Clusters of Stars". Philosophical Transactions of the Royal Society of London. 76: 457–499. Bibcode:1786RSPT...76..457H. doi:10.1098/rstl.1786.0027.
  4. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 5056". Celestial Atlas. Retrieved 2 August 2025.
  5. ↑ "NGC 5056". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2 August 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. ↑ Arbour, R.; Briggs, D. (2005). "Supernovae 2005at and 2005au". International Astronomical Union Circular (8496): 3. Bibcode:2005IAUC.8496....3A.
  8. ↑ "SN 2005au". Transient Name Server. IAU. Retrieved 2 August 2025.