| Type | Open Cluster |
|---|---|
| Magnitude | Right Ascension | 16h 45' (2000) |
| Declination | 38° 21' N |
| Constellation | Hercules |
| Classification | IV 2 p |
| 3C345 | Eta Herculis | IC 4617 |
| Messier 13 | NGC 6207 | NGC 6212 |
Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.
A complete list of credits and sources can be found on the about page