Ejecta properties computed by heracles for model r1w1 (weak wind mass loss rate of 10^-6 M_⊙ yr^-1) at 0.17, 1, and 2 d after the start of the heracles simulation. The black dot in each of the middle panels corresponds to the electron-scattering photosphere. In the optical-depth panel, the colored numbers correspond to each energy group, ordered from low frequency (group 1 covers the far-IR) to high frequency (group 8 covers the Lyman continuum). The thick black line corresponds to the electron-scattering optical depth. Through this early evolution, we can see the ejecta accelerate, the wind acceleration by the SN radiation, the propagation of the radiation burst that coincided with shock breakout (at ~0.1 d), the heating and rapid ionization of the wind, and the establishment of radiative equilibrium in the optically thin regions at 2 d.