Analysis of the infrared data. Top: Spitzer raw normalized flux of VHS J1256-1257AB as a function of time. The pixel phase model is over-plotted with a red curve. Data are in bins of 32 consecutive two-second images (∼1 min). Vertical bars indicate the standard deviation of the data in each bin, with a median value of 0.1%. The zero time corresponds to MJD 58801.26092. Middle: pixel-phase-corrected photometry as a function of time. Bottom: LS periodogram for the raw and corrected photometry in orange and gray, respectively. The window function (cyan) and the 99.9% FAP (magenta) are also shown. The pixel-phase-corrected flux also shows a significant peak around ∼2.1 h.