K_s-band light curves derived from the NOT/NOTCAM photometry taken at 2021 March 31 (top panel) and 2021 May 5 (middle panel). Error bars on the right indicate the typical uncertainty, which is ≃0.025 mag in both cases. The bottom panel shows both light curves, phase-folded and phase-binned. Brown circles correspond to March 31, while grey squares represent May 5. To enhance clarity, the orbital cycle is repeated.