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NGC 2257

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Distance from Sun: 47200 pc Age: 13.0 Gyr V-band magnitude: 11.51 Mass: 1.3 · 105 M☉ Half-mass radius: 14.41 pc Power-law MF slope: α = -2.23

Image Source: DSS2, Aladin, CDS

Observations
Proper motion	Velocity Dispersion
HST photometry	Color magnitude diagram	Mass function
N-body Fits
Surface density	Proper motions	Radial velocities
Remnant fraction	Mass-to-light ratio