images

Open cluster NGC 7789 in Cassiopeia

by

R.Gendler/Novapix

Reference

a-aou77-89002

Date

2007-01-24

The open cluster NGC 7789 in Cassiopeia is a bright and richly populated cluster comprised of approximately 300 member stars which are evenly distributed and well detached from the background sky. This cluster lies at a distance of 7620 light-years away with an apparent diameter of 25'. As indicated by the various red giants in the image, the cluster is advanced in age and which has been estimated to be approximately 1.6 billion years-old.