M9 is a globular cluster of stars located within the constellation
of Ophiuchus. It is located at the edge of a dark patch of dark
nebulosity. This cluster is about 26,000 light-years from us and has
a diameter of about 70 light-years. The central region of the
cluster has a distinct oval shape. M9's visual magnitude of 7.9
makes it a bit more challenging to find than some of the other
globular clusters. It can be found with binoculars, and can be quite
impressive in a 4-inch telescope.