Image of NGC 4151 from the 0.8m Schulman Telescope at the Mount Lemmon SkyCenter
Observation data (J2000 epoch)
Constellation
Canes Venatici
Right ascension
12h 10m 32.6s[1]
Declination
+39° 24′ 21″[1]
Redshift
0.003262[2] 995 ± 3 km/s[1]
Distance
15.8 ± 0.4 Mpc (51.5×10^6 ± 1.3×10^6 ly)[3]
Apparent magnitude (V)
11.5[1]
Characteristics
Type
(R')SAB(rs)ab,[1] Sy1[2]
Apparent size (V)
6.4′ × 5.5′[1]
Other designations
UGC 7166,[1] PGC 38739[1]
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NGC 4151 is an intermediate spiral Seyfert galaxy with weak inner ring structure located 15.8 megaparsecs (52 million light-years) from Earth[4] in the constellation Canes Venatici. The galaxy was first mentioned by William Herschel on March 17, 1787; it was one of the six Seyfert galaxies described in the paper [5] which defined the term. It is one of the nearest galaxies to Earth to contain an actively growing supermassive black hole.[6] The black hole would have a mass on the order of 2.5 million to 30 million solar masses.[7] It was speculated that the nucleus may host a binary black hole, with about 40 million and about 10 million solar masses respectively, orbiting with a 15.8-year period.[8] This is, however, still a matter of active debate.
Some astronomers nickname it the "Eye of Sauron" from its appearance.[9]
One supernova has been observed in NGC 4151: SN 2018aoq (Type II, mag 14.4).[10]
^ abcdefgh"Results for NGC 4151". NASA/IPAC Extragalactic Database. Retrieved 2007-03-27.
^ ab"NGC 4151". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2014-06-06.
^Yuan, W.; Fausnaugh, M. M.; Hoffmann, S. L.; Macri, L. M.; Peterson, B. M.; Riess, A. G.; Bentz, M. C.; Brown, J. S.; Bontà, E. Dalla; Davies, R. I.; Rosa, G. De; Ferrarese, L.; Grier, C. J.; Hicks, E. K. S.; Onken, C. A.; Pogge, R. W.; Storchi-Bergmann, T.; Vestergaard, M. (2020). "The Cepheid Distance to the Seyfert 1 Galaxy NGC 4151". The Astrophysical Journal. 902 (1): 26. arXiv:2007.07888. Bibcode:2020ApJ...902...26Y. doi:10.3847/1538-4357/abb377. S2CID 220546047.
^W. M. Keck Observatory (2014-11-26). "'Eye of Sauron' Provides New Way of Measuring Distances to Galaxies". W. M. Keck Observatory. Archived from the original on 2014-12-05. Retrieved 2014-11-27.
^C. K. Seyfert (1943). "Nuclear Emission in Spiral Nebulae". Astrophysical Journal. 97: 28–40. Bibcode:1943ApJ....97...28S. doi:10.1086/144488.
^"NGC 4151: An active black hole in the "Eye of Sauron"". Astronomy magazine. 2011-03-11. Archived from the original on 2019-03-29. Retrieved 2011-03-14.
^Roberts, Caroline A.; Bentz, Misty C.; Vasiliev, Eugene; Valluri, Monica; Onken, Christopher A. (2021). "The Black Hole Mass of NGC 4151 from Stellar Dynamical Modeling". The Astrophysical Journal. 916 (1): 25. arXiv:2106.02758. Bibcode:2021ApJ...916...25R. doi:10.3847/1538-4357/ac05b6. S2CID 235358825.
^Bon; Jovanović; Marziani; Shapovalova; et al. (2012). "The First Spectroscopically Resolved Sub-parsec Orbit of a Supermassive Binary Black Hole". The Astrophysical Journal. 759 (2): 118–125. arXiv:1209.4524. Bibcode:2012ApJ...759..118B. doi:10.1088/0004-637X/759/2/118. S2CID 119257514.
^Chandra X-ray Observatory (10 March 2011). "NGC 4151: An Active Black Hole in the "Eye of Sauron"". Chandra X-ray Center.
^Transient Name Server entry for SN 2018aoq. Retrieved 5 January 2023.
NGC4151 is an intermediate spiral Seyfert galaxy with weak inner ring structure located 15.8 megaparsecs (52 million light-years) from Earth in the constellation...
near the barred spiral galaxy NGC4151 and irregular galaxy NGC 4214. With an apparent V-band magnitude of 10.18, NGC 4244 lies approximately 4.3 megaparsecs...
Bibcode:2010MNRAS.403..646N. doi:10.1111/j.1365-2966.2009.16167.x. S2CID 59580555. "NGC4151: An active black hole in the "Eye of Sauron"". Astronomy magazine. 2011-03-11...
Hickson 44 group NGC 3259, also a strong source of X-rays NGC 3783, also a strong source of X-rays NGC 3982, also a starburst galaxy NGC4151, which has two...
lines. Galaxies observed as part of this study included NGC 1068, NGC4151, NGC 3516, and NGC 7469. Active galaxies such as these are known as Seyfert...
elliptical galaxies, though there is one well-documented exception, namely NGC4151. Some Seyfert galaxies show weak, small radio jets, but they are not radio-luminous...
501 NGC 821 NGC 1023 NGC 1097 NGC 1271 NGC 1277 NGC 1332 NGC 1566 NGC 2787 NGC 3079 NGC 3115 NGC 3377 NGC 3384 NGC 3998 NGC4151NGC 4261 NGC 4438 NGC 4459...
together with the name of the observing project (HUDF, SDSS, 3C, CFHQS, NGC/IC, etc.) This is a list of galaxies that are well known by something other...
interaction with NGC4151 may "maintain [its] star formation". "NED results for object NGC 4145". Retrieved 31 January 2015. "Barred Spiral Galaxy NGC 4145". spitzer...
designation of the galaxy whose core they reside in. Examples are NGC 4261, NGC4151 and M31, which derive their designation from the New General Catalogue...
UV spectra of AGN became widely available. One particular target was NGC4151, the brightest Seyfert galaxy. Starting soon after IUE's launch, a group...
these type of galaxies are so rare. NGC4151 - another example of a non-elliptical radio galaxy List of galaxies "NGC 612 NASA/IPAC Extragalactic Database...
the NRL instrument. Observations of the hard X-ray spectra of the AGN NGC4151 and Cen A Position and spectral variability of the 14 May 1972 cosmic gamma-ray...
II Program. The catalogue contains 400 objects. All objects are from the NGC. All objects are visible in mid northern latitudes, since they were all observed...
arcsecond. USS Almaack (AKA-10) was the name of United States navy ship. NGC 752 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction",...
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NGC 4041 is the New General Catalogue identifier for a spiral galaxy in the northern circumpolar constellation of Ursa Major. It is located an estimated...
116687 HIP 116962 HIP 117472 HIP 43 HIP 124 HIP 1354 HIP 1982 HIP 2854 HIP 4151 閣道 (Gé Dào, Flying Corridor) π Cas ξ Cas φ Cas χ Cas 44 Cas 外屏 (Wài Píng...
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