De Vaucouleurs Atlas Type: SA(s)bc + SB(rs)cd

Filter: B

Telescope: KPNO 0.9-m
North up , East left
Field Dimensions: 3.5 x 2.7 arcminutes

RC3 Type: SA(s)c+SB(rs)cd
RSA Type: ----
Surface Brightness Range Displayed: 19.0-26.0 mag per square arcsec
Absolute Blue Magnitude: -20.6

De Vaucouleurs Atlas Description:

This well-known pair in the Hercules Cluster (A2151) includes two perfectly normal-looking late-type spirals. The lack of any signs interaction suggests that the pair is a case of a superposition. Both spirals are good examples of their types.