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Type: galaxy cluster
Mag: B=13.9, V=12.61
by Jim Lucyk: Sky & Tel. 1/88 p17
anon. (1990) A double-ring galaxy. Sky & Telescope, Jul, 11.
Minkowski, R. (1961) NGC 6166 and the cluster Abell 2199. Astron.J., 66(10), 558-561.
The Messier objects
The Bennett objects
The Caldwell list
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