# galpy.potential.Potential.rhalf¶

Potential.rhalf(t=0.0, INF=inf)[source]

NAME:

rhalf

PURPOSE:

calculate the half-mass radius, the radius of the spherical shell that contains half the total mass

INPUT:

t= (0.) time (optional; can be Quantity)

INF= (numpy.inf) radius at which the total mass is calculated (internal units, just set this to something very large)

OUTPUT: