Disk-integrated phase-curve fits for the four GF-4 bands. (a) Full phase-angle range. Circles show GF-4 disk-integrated observations with radiometric-error bars, and solid curves show the finite-solar-disk-corrected model curves. (b) Near-opposition zoom-in. Solid curves are finite-solar-disk-corrected curves, and dashed curves are the corresponding point-source extrapolations. Finite-solar-disk convolution flattens the extrapolated curves only at subdegree phase angles; the correction is negligible by the minimum observed phase angle of ∼3﹩\mathop{.}\limits^{{\unicode{x000b0}}}﹩7.