Lightcurve of ‘Oumuamua on 2017 October 30 (red circles) in the PanSTARRS r′ system. Four field stars observed in all frames are also plotted, with each star offset so that its average magnitude for the night is ﹩{r}_{P1}^{{\prime} }=26.0﹩. Star magnitude uncertainties are not plotted because they are much smaller than the data points. The very flat star magnitudes demonstrate that conditions were stable throughout the night and that the large photometric variations in ‘Oumuamua’s lightcurve are due to the asteroid.