Object name: IC4996
IC 4996 is a small tight open cluster in Cygnus about 5600 light years away. WEBDA puts its age at only 9 million years. So young, a couple of its stars haven't yet reached the main sequence so it is studied to learn more about rather rare pre-main sequence (PMS) stars. I didn't take time to look into those papers. The cluster was discovered by William Herschel on September 20, 1786. It isn't in either of the Herschel 400 observing programs.