In the constellation Ophiuchus lies a
globular cluster of stars known as M107. It was discovered by
Messier's colleague, Pierre Mechain, in 1782 and was not
included in the original publication of the catalog. It is
located about 20,000 light-years from Earth and is believed to
have a diameter of around 60 light-years. This cluster is
approaching us at a rate of about 147 km/sec. It can be easily
found with binoculars and is an impressive sight in a 4-inch
telescope at medium magnification.
