NGC 5216= Arp 104
"Here is NGC 5216, the Keenan System (Arp 104). The dynamics of interacting galaxies are always pretty exciting. In this case a string of stars several tens of thousands of light years long connects these galaxies as part of several tidal tails and bridges. This image, taken last May, is an updated/improved version of one take five years prior. Unfortunately May had many partly cloudy nights. [These data were used] in a recent workshop as an example of processing challenging images.
[This page] has my caption from the original story I wrote concerning seeing this nearly identical pattern in a supercomputer simulation. Be certain to click on the link for the YouTube video of the visualization."
A wider-field image can be found HERE.