FNORMM# FNORMM = <Quantity 5.63923004e+16 g># Characteristic mass scale for MAS. \(M_0 = n_0\,m_p\,L_0^3 = \rho_0\,L_0^3\). Represents the total mass contained in a cube of side \(L_0 = R_\odot\) at the reference density.