EntityQ530998· pop 43· linked from 740 articles

NGC 4945

galaxy in the M83 group of galaxies

Key facts

Constellation: Centaurus
Right ascension: 13 05 27.279
Declination: −49 ° 28 ′ 04.44 ″
Redshift: 0.001868 ± 0.00002
Heliocentric radial velocity: 563 ± 3 km/s
Distance: 10.96 ± 0.55 Mly (3.36 ± 0.17 Mpc )
Group or cluster: Centaurus A/M83 Group
Type: SB(s)cd?edge
Mass: 1.4 +1.4, −0.7 × 10 M ☉
Size: 165,185 ly (50.67 kpc ) (estimated)
Apparent size v: 20.0′ × 3.8′
Notable features: Seyfert 2 galaxy

via Wikipedia infobox

Article

NGC 4945 is a widely-studied barred spiral galaxy in the constellation Centaurus, visible near the optical double star Xi Centauri. It is also known as Caldwell 83. The galaxy was discovered by Scottish astronomer James Dunlop in 1826. It is located at a distance of approximately 11.0 million light-years (3.36 Mpc) from the Milky Way. NGC 4945 hosts one of the closest active galactic nuclei to Earth and is classified as a Seyfert 2 galaxy.

NGC 4945 is 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.