Optical and NIR light curves. A gray solid vertical line represents the epoch of peak brightness in the B band obtained from a SNOOPY fit to the cyan and orange ATLAS light curves, which are shown in orange and cyan solid lines. The ticks at the bottom represent epochs with optical spectra available. The dotted vertical lines delineate the last non-detection (yellow) and first detection (orange) epochs. The open symbols with downward arrows correspond to ASAS-SN (circles), ATLAS (crosses/diamonds), and u-band (triangles) non-detections.