NGC 6139

NGC 6139 is a globular cluster of the Milky Way in the constellation Scorpius. It is located 3.6 kpc from the Galactic Center (less than half the distance of the Sun from the Galactic Center).

Visibility
The cluster appears visibly small and requires larger +12" aperture telescopes to view the core. Appearing around 1.5 arcmins having a radius of .75 arcmins, despite its rather bright magnitude.