NGC 6166
Galaxy
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NGC 6166 is an elliptical galaxy in the Abell 2199 cluster. It lies 490 million light years away in the constellation Hercules. The primary galaxy in the cluster, it is one of the most luminous galaxies known in terms of X-ray emissions. Wikipedia
Apparent size (V): 1.9’ x 1.4’
Constellation: Hercules
Distance: 490 Mly; (142 Mpc)
Redshift: z = −0.030354; (minus sign; indicates blueshift)