NGC 4945

NGC 4945
NGC 4945 image take by the MPG/ESO 2.2-metre telescope at La Silla Observatory.
Observation data (J2000 epoch)
Constellation	Centaurus
Right ascension	13^h 05^m 27.5^s^[1]
Declination	−49° 28′ 06″^[1]
Redshift	563 ± 3 km/s^[1]
Distance	11.7 Mly (3.6 Mpc)^[2]
Type	SB(s)cd^[1]
Apparent dimensions (V)	20′.0 × 3′.8^[1]
Apparent magnitude (V)	9.3^[1]
Other designations
PGC 45279,^[1] Caldwell 83

Coordinates: 13^h 05^m 27.5^s, −49° 28′ 06″

NGC 4945 is a spiral galaxy in the constellation Centaurus, and near the bright star, Zeta Centauri.^[3] The galaxy was discovered by James Dunlop in 1826. It is thought to be similar to the Milky Way Galaxy, although X-ray observations show that NGC 4945 has an unusual energetic Seyfert 2 nucleus that might house a large black hole.^[4]

Galaxy group

NGC 4945 one of the brightest galaxies of the Centaurus A/M83 Group, a large, nearby group of galaxies. The galaxy is the second brightest galaxy in the subgroup centered on Centaurus A.^[2]^[5]

References

1 2 3 4 5 6 7 "NASA/IPAC Extragalactic Database". Results for NGC 4945. Retrieved 2006-11-25.
1 2 I. D. Karachentsev; M. E. Sharina; A. E. Dolphin; E. K. Grebel; et al. (2002). "New distances to galaxies in the Centaurus A group". Astronomy and Astrophysics 385 (1): 21–31. Bibcode:2002A&A...385...21K. doi:10.1051/0004-6361:20020042.
↑ http://www.docdb.net/show_object.php?id=ngc_4945, NGC 4945 : DOCdb :Deep Sky Observer's Companion – the online database
↑ "Milky Way's Not-So-Distant Cousin Likely Harbors Supermassive Black Hole". Science Daily.
↑ I. D. Karachentsev (2005). "The Local Group and Other Neighboring Galaxy Groups". Astronomical Journal 129 (1): 178–188. arXiv:astro-ph/0410065. Bibcode:2005AJ....129..178K. doi:10.1086/426368.

External links

Wikimedia Commons has media related to NGC 4945.

NGC 4945 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
APOD: Nearby Spiral Galaxy NGC 4945 (7/21/02)
ESO: The milkyway's nearby cousin (2/10/09)

Caldwell catalogue

List	C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C21 C22 C23 C24 C25 C26 C27 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C40 C41 C42 C43 C44 C45 C46 C47 C48 C49 C50 C51 C52 C53 C54 C55 C56 C57 C58 C59 C60 C61 C62 C63 C64 C65 C66 C67 C68 C69 C70 C71 C72 C73 C74 C75 C76 C77 C78 C79 C80 C81 C82 C83 C84 C85 C86 C87 C88 C89 C90 C91 C92 C93 C94 C95 C96 C97 C98 C99 C100 C101 C102 C103 C104 C105 C106 C107 C108 C109

See also	Messier Catalogue Catalogue of Nebulae and Clusters of Stars New General Catalogue Index Catalogue Revised New General Catalogue Herschel 400 Catalogue

Book:Caldwell catalogue Category:Caldwell objects Portal:Astronomy Commons:Caldwell objects

New General Catalogue 4500 to 4999

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Astronomical catalog List of NGC objects

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