M22

M22 was the first GC discovered (1665). One of the nearer GCs. 97 LY in diameter. Third brightest GC. One of four GCs known to have a PN. (IRAS 18333-2357 or GJJC 1). Luminosity is limited by dust extinction.

Shapley Sawyer Classification: VII

Distance: 10,438 LY

Type: Hub Globular

Position w.r.t. core of galaxy: In the disc of the Milky Way about halfway between the sun and the core.

Any stars resolved: Yes

Undergoing Core Collapse: No