Arp 321 is the last member of the class Galaxy Groups. The Atlas note says
"sharp absorption lane in connection to S galaxy". That can just be seen
in this image. All of these galaxies also make up Hickson Compact Group
40, and have MCG designations -1-25-8 through -1-25-12. The little double
galaxy about 4' W is Mitchell Anonymous 0938-0951, or LEDA 82490.
Three trails from geosynchronous satellites can be seen in the negative image. These were only the brightest of seven that passed through the field in an hour.
|10-inch Newtonian, StarlightXpress MX716, 62 minutes|