NGC 1978

Distance from Sun: 47900 pc
Age: 2.0 Gyr
V-band magnitude: 10.20
Mass: 1.5 · 105 M
Half-mass radius: 11.46 pc
Power-law MF slope: α = -1.46


Image Source: NASA, ESA, HST


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