Phase variations of vEHB-2. Upper panel: observed light variations from Momany et al. (2020). Dashed blue line denotes predictions deduced purely from temperature variations, while solid line denotes a fit with additional sinusoidal radius variations. Middle panel: surface gravity variations. Dashed blue line denotes surface gravity determined from the radius variations. Lower panel: effective temperature variations. Solid blue line denotes sinusoidal fit. Part of the variations for φ < 0 and φ > 1 are repeated for better visibility.