[1] It is located around 313 million light-years away, and it was discovered by Edward D. Swift and Lewis A.

[3] NGC 6622 and NGC 6621 are included in the Atlas of Peculiar Galaxies as Arp 81 in the category "spiral galaxies with large high surface brightness companions".

[5][1] The encounter has left NGC 6622 very deformed, as it was once a spiral galaxy.

[7] The most intense star formation takes place in the region between the two nuclei, where a large population of luminous clusters, also known as super star clusters, has been observed.

[4] The side of the galaxy further from the companion features noticeably less star formation activity.