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NGC 4051
NGC 4051 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
Constellation	Ursa Major
Right ascension	12 03 09.686
Declination	+44° 31′ 52.54″
Redshift	0.002336
Heliocentric radial velocity	700 km/s
Distance	54.14 ± 0.98 Mly (16.6 ± 0.3 Mpc)
Group or cluster	Ursa Major Cluster
Apparent magnitude (V)	12.92
Apparent magnitude (B)	11.08
Characteristics
Type	SAB(rs)bc
Size	78,800 ly (24,160 pc)
Apparent size (V)	6.00′ × 4.98′
Other designations
IRAS 12005+4448, UGC 7030, PGC 38068, CGCG 243-038

NGC 4051 is an intermediate spiral galaxy in the constellation of Ursa Major. It was discovered on 6 February 1788 by John Herschel.

NGC 4051 contains a supermassive black hole with a mass of 1.73 million M_☉. This galaxy was studied by the Multicolor Active Galactic Nuclei Monitoring 2m telescope.

The galaxy is a Seyfert galaxy that emits bright X-rays. However, in early 1998 the X-ray emission ceased as observed by the Beppo-SAX satellite. X-ray emission had risen back to normal by August 1998.

NGC 4051 is a member of the Ursa Major Cluster. Its peculiar velocity is −490 ± 34 km/s, consistent with the rest of the cluster.

Supernovae

Three supernovae have been discovered in NGC 4051:

• SN 1983I (type Ic, mag. 13.5) was discovered independently by J. Kielkopf et al, on 11 May 1983, and by Tsvetkov on 12 May 1983.
• SN 2003ie (type II, mag. 15.2) was discovered by Ron Arbour on 19 September 2003.
• SN 2010br (type Ib/c, mag. 17.7) was discovered by Vitali Nevski on 10 April 2010.

References

1. ^ Skrutskie, Michael F.; Cutri, Roc M.; Stiening, Rae; Weinberg, Martin D.; Schneider, Stephen E.; Carpenter, John M.; Beichman, Charles A.; Capps, Richard W.; Chester, Thomas; Elias, Jonathan H.; Huchra, John P.; Liebert, James W.; Lonsdale, Carol J.; Monet, David G.; Price, Stephan; Seitzer, Patrick; Jarrett, Thomas H.; Kirkpatrick, J. Davy; Gizis, John E.; Howard, Elizabeth V.; Evans, Tracey E.; Fowler, John W.; Fullmer, Linda; Hurt, Robert L.; Light, Robert M.; Kopan, Eugene L.; Marsh, Kenneth A.; McCallon, Howard L.; Tam, Robert; Van Dyk, Schuyler D.; Wheelock, Sherry L. (1 February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708. ISSN 0004-6256. S2CID 18913331.
2. ^ "NED results for object NGC 3697". National Aeronautics and Space Administration / Infrared Processing and Analysis Center. Retrieved 9 November 2017.
3. ^ Yuan, W.; Macri, L. M.; Peterson, B. M.; Riess, A. G.; Fausnaugh, M. M.; Hoffmann, S. L.; Anand, G. S.; Bentz, M. C.; Dalla Bontà, E.; Davies, R. I.; De Rosa, G.; Ferrarese, L.; Grier, C. J.; Hicks, E. K. S.; Onken, C. A.; Pogge, R. W.; Storchi-Bergmann, T.; Vestergaard, M. (2021). "The Cepheid Distance to the Narrow-line Seyfert 1 Galaxy NGC 4051". The Astrophysical Journal. 913 (1): 3. arXiv:2012.05931. Bibcode:2021ApJ...913....3Y. doi:10.3847/1538-4357/abf24a. S2CID 228375026.
4. ^ "NGC 4051". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 9 November 2017.
5. "New General Catalog Objects: NGC 4050 - 4099". cseligman.com. Retrieved 9 November 2017.
6. Denney, K. D.; Watson, L. C.; Peterson, B. M.; Pogge, R. W.; Atlee, D. W.; Bentz, M. C.; Bird, J. C.; Brokofsky, D. J.; Comins, M. L.; Dietrich, M.; Doroshenko, V. T.; Eastman, J. D.; Efimov, Y. S.; Gaskell, C. M.; Hedrick, C. H.; Klimanov, S. A.; Klimek, E. S.; Kruse, A. K.; Lamb, J. B.; Leighly, K.; Minezaki, T.; Nazarov, S. V.; Petersen, E. A.; Peterson, P.; Poindexter, S.; Schlesinger, Y.; Sakata, K. J.; Sergeev, S. G.; Tobin, J. J.; et al. (2009). "A revised broad-line region radius and black hole mass for the narrow-line Seyfert 1 NGC 4051". The Astrophysical Journal. 702 (2): 1353–1366. arXiv:0904.0251. Bibcode:2009ApJ...702.1353D. doi:10.1088/0004-637X/702/2/1353. S2CID 2528509.
7. Suganuma, Masahiro; Yoshii, Yuzuru; Kobayashi, Yukiyasu; Minezaki, Takeo; Enya, Keigo; Tomita, Hiroyuki; Aoki, Tsutomu; Koshida, Shintaro; Peterson, Bruce A. (2006). "Reverberation Measurements of the Inner Radius of the Dust Torus in Nearby Seyfert 1 Galaxies". The Astrophysical Journal. 639 (1): 46–63. arXiv:astro-ph/0511697. Bibcode:2006ApJ...639...46S. doi:10.1086/499326. ISSN 0004-637X. S2CID 7671684.
8. "Now you see it ..." New Scientist (2145): 23. 1 August 1998.
9. Tully, R. Brent; Verheijen, Marc A. W.; Pierce, Michael J.; Huang, Jia-Sheng; Wainscoat, Richard J. (December 1996). "The Ursa Major Cluster of Galaxies.I.Cluster Definition and Photometric Data". The Astronomical Journal. 112: 2471. arXiv:astro-ph/9608124. Bibcode:1996AJ....112.2471T. doi:10.1086/118196. ISSN 0004-6256. S2CID 7875515.
10. P. Fouque, E. Gourgoulhon, P. Chamaraux, G. Paturel; Gourgoulhon; Chamaraux; Paturel (1992). "Groups of galaxies within 80 Mpc. II - The catalogue of groups and group members". Astronomy and Astrophysics Supplement. 93: 211–233. Bibcode:1992A&AS...93..211F.{{cite journal}}: CS1 maint: multiple names: authors list (link)
11. "The Ursa Major Groups". www.atlasoftheuniverse.com. Retrieved 2018-04-20.
12. Aksenov, E. P.; Kielkopf, J.; Brashaer, R.; Goldstein, A.; Gabart, R. (1983). "Supernovae". International Astronomical Union Circular (3813): 1. Bibcode:1983IAUC.3813....1A.
13. "SN 1983I". Transient Name Server. IAU. Retrieved 5 December 2024.
14. Arbour, R.; Boles, T. (2003). "Supernova 2003ie in NGC 4051". International Astronomical Union Circular (8205): 1. Bibcode:2003IAUC.8205....1A.
15. "SN 2003ie". Transient Name Server. IAU. Retrieved 5 December 2024.
16. Maksym, A.; Elenin, L.; Schwartz, M. (2010). "Supernova 2010br in NGC 4051". Central Bureau Electronic Telegrams. 2245: 1. Bibcode:2010CBET.2245....1M.
17. "SN 2010br". Transient Name Server. IAU. Retrieved 5 December 2024.

Notes

1. ^ POSS1 103a-O values used.

External links

• NGC 4051 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
• SN 2010br located 19".5 east and 10" south of the center at 12 03 10.96 +44 31 42.8 / Wikisky DSS2 zoom-in of same region

v t e Constellation of Ursa Major
Stars	Bayer α (Dubhe) β (Merak) γ (Phecda) δ (Megrez) ε (Alioth) ζ (Mizar) η (Alkaid) θ ι (Talitha) κ (Alkaphrah) λ (Tania Borealis) μ (Tania Australis) ν (Alula Borealis) ξ (Alula Australis) ο (Muscida) π π ρ σ σ τ υ φ χ (Taiyangshou) ψ ω Flamsteed 2 (A) 5 (b) 6 15 (f) 16 (c) 17 18 (e) 19 20 21 22 23 (h) 24 (d) 26 27 28 31 32 35 36 37 38 39 40 41 42 43 44 46 47 (Chalawan) 49 51 55 56 57 58 59 60 61 62 65 66 67 68 70 71 72 73 74 75 76 78 80 (Alcor) 81 82 83 84 86 55 Cam 56 Cam 57 Cam 1 CVn 14 LMi 15 LMi 25 LMi 47 LMi 37 Lyn 39 Lyn 41 Lyn (Intercrus) Variable R T U W Z RV ST SU SW SX TU TX TY UX UY VV VX VY XY ZZ AA AB AE AN AR AW BC BE BM BZ CG CH CO CQ CY DH DI DM DV DW EE EG EI EK EN EP ER ET EU EV EZ IY KS HR 3922 4067 4098 4132 4867 5148 HD 68988 (Násti) 74389 80606 80607 84406 98618 99706 118203 (Liesma) 233731 Other ADS 7251 Feige 55 G 196-3 Gliese 338 Gliese 412 Gliese 414 GJ 3512 Groombridge 1618 Groombridge 1830 HAT-P-3 (Dombay) HAT-P-13 HAT-P-21 (Mazaalai) HIP 57050 HIP 57274 1SWASP J093010.78+533859.5 KELT-24 Lalande 21185 M82 X-1 M82 X-2 Qatar-8 Sidus Ludoviciana SN H0pe UGC 5497 US 708 Winnecke 4 WISE 1405+5534 XTE J1118+480
Exoplanets 47 Ursae Majoris b (Taphao Thong) c (Taphao Kaew) d ο Ursae Majoris b 41 Lyncis b (Arkas) Gliese 414 Ab c HAT-P-3b (Teberda) HD 80606 b HD 89744 b KELT-24b
Nebulae Owl Nebula
Galaxies	Messier 81 (Bode's Galaxy) 82 (Cigar Galaxy) 101 (Pinwheel Galaxy) 108 109 NGC 2603 2606 2681 2685 2688 2768 2787 2800 2805 2814 2841 2857 2950 2959 2976 2985 2998 3005 3006 3008 3009 3073 3077 3079 3184 3191 3198 3206 3259 3310 3319 3353 3359 3435 3445 3448 3516 3539 3545B 3550 3552 3553 3554 3358 3561 3583 3610 3613 3619 3631 3642 3656 3665 3669 3675 3690 3718 3726 3729 3738 3741 3786 3794 3877 3893 3898 3921 3928 3938 3941 3945 3949 3953 3972 3982 3985 3994 3995 3998 4013 4026 4036 4041 4051 4088 4096 4100 4102 4144 4157 4194 4500 4605 5001 5164 5201 5204 5256 5278 5279 5308 5322 5422 5473 5474 5477 5486 5502 5585 Other 2MASX J10222849+5006200 3C 219 3C 244.1 3C 268.3 CEERS-2112 Haro 2 Holmberg IX I Zwicky 18 IC 923 IC 2574 IRAS F11119+3257 Markarian 231 Markarian 273 Markarian 421 Mayall's Object SBS 0953+549 SDSS J1148+5251 UGC 4879 UGC 5101 UGC 6945 UGC 8335 UGC 8508 Ursa Major III
Astronomical events SN 1999by
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