WISE W2 (top) and W1 (bottom) photometry of WISE1810 over time. Individual measurements are plotted as gray crosses, the average photometry per observing epoch is plotted as red dots. Error bars account for the photometric dispersion. Both filters show a decreasing trend likely due to flux contamination by a background star. NEOWISE data (Mainzer et al. 2011) were acquired between modified Julian dates (MJD) = 56742.7 and 59096.3.