---

NGC 6656 (M 22)

---

Distance from Sun: 3300 ± 40 pc Galactocentric distance: 5000 ± 30 pc V-band magnitude: 5.06 ± 0.04 Mass: 4.70 · 105 M☉ M/L ratio: 2.0 ± 0.1 M☉/L☉ Half-mass radius: 5.21 pc Power-law MF slope: α = -0.90 ± 0.15

Image Credit: Bernhard Hubl, http://www.astrophoton.com/

Observations
Cluster distance	Proper motion	Radial velocity
Orbit over the last 500 Myr
Velocity dispersion profile	Rotation	Color magnitude diagram
HST photometry	Mass function	MF slope
N-body Fits
Surface density	Proper motions	Radial velocities
Remnant fraction	Mass-to-light ratio