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NGC 4696

Coordinates: Sky map 12h 48m 49.2614s, −41° 18′ 39.115″
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NGC 4696
NGC 4696 imaged by Legacy Surveys
Observation data (J2000 epoch)
ConstellationCentaurus
Right ascension12h 48m 49.2614s[1]
Declination−41° 18′ 39.115″[1]
Redshift0.009904±0.0000400[1]
Heliocentric radial velocity2,969±12 km/s[1]
Distance116 ± 9 Mly (35 ± 3 Mpc)[2]
Apparent magnitude (V)11.39[1]
Characteristics
TypeE1 pec[1]
Apparent size (V)4.5′ × 3.2′[1]
Other designations
ESO 322- G 091, 2MASX J12484927-4118399, MCG -07-26-051, PGC 43296[1]

NGC 4696 is an elliptical galaxy in the constellation Centaurus. Its velocity with respect to the cosmic microwave background is 3,251±23 km/s, which corresponds to a Hubble distance of 156.4 ± 11.0 Mly (47.95 ± 3.38 Mpc).[1] However, 25 non-redshift measurements give a much closer mean distance of 122.63 ± 3.90 Mly (37.600 ± 1.196 Mpc).[3] It was discovered by British astronomer James Dunlop on 7 May 1826.[4]

NGC 4696 is the brightest galaxy in the Centaurus Cluster, a large, rich cluster of galaxies in the constellation of the same name.[5] The galaxy is surrounded by many dwarf elliptical galaxies also located within the cluster.[5] There is believed to be a supermassive black hole at the center of the galaxy.[6]

Supernova

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One supernova has been observed in NGC 4696:

  • SN 2017ejb [d] (Type Ia, mag. 17.2078) was discovered by the Distance Less Than 40 Mpc Survey (DLT40) on 28 May 2017.[7]

References

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  1. 1 2 3 4 5 6 7 8 9 "Results for object NGC 4696". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 3 August 2026.
  2. ↑ J. L. Tonry; A. Dressler; J. P. Blakeslee; E. A. Ajhar; et al. (2001). "The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances". Astrophysical Journal. 546 (2): 681–693. arXiv:astro-ph/0011223. Bibcode:2001ApJ...546..681T. doi:10.1086/318301. S2CID 17628238.
  3. ↑ "Distance Results for NGC 4696". NASA/IPAC Extragalactic Database. NASA. Retrieved 3 August 2026.
  4. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 4696". Celestial Atlas. Retrieved 3 August 2026.
  5. 1 2 A. Sandage; J. Bedke (1994). Carnegie Atlas of Galaxies. Washington, D.C.: Carnegie Institution of Washington. ISBN 978-0-87279-667-6.
  6. ↑ Mohon, Lee (2017-04-18). "The Arrhythmic Beating of a Black Hole Heart". NASA. Retrieved 2017-11-25.
  7. ↑ "SN 2017ejb". Transient Name Server. IAU. Retrieved 3 August 2026.
[edit]
  • Wikimedia Commons logo Media related to NGC 4696 at Wikimedia Commons
  • http://www.eurekalert.org/pub_releases/2010-08/eic-n4a081010.php
  • http://apod.nasa.gov/apod/ap161207.html
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