  Magnetized stars exhibit periodic variations of their longitudinal global
magnetic fields, $B_e$, owing to rotation. Here, we present the second catalog
of averaged stellar magnetic rotational phase curves and their parameters
derived from a compilation of the published observational data and personal
communications for 350 stars of various spectral types, which were published up
to the end of December 2019. Magnetic Ap and Bp stars constitute the most
numerous subset in the catalog (215 objects). Phase curves were obtained by
fitting either a sinusoid or a double sine wave to series of the observed $B_e$
measurements using the least squares method. For some stars, we present
magnetic phase curves derived from time series of the surface magnetic field,
$B_s$, or obtained improved values of the rotational period, $P_{\rm rot}$. We
have also identified eight stars in our catalog that host planets or planetary
systems.
