Comparison star: GSC6206.372 162227.64 -174857.5 (2000.0) 13.67 0 GSC6206.372 162227.66 -174856.9 (2000.0) 13.73 0 USNO0675.10698092 162227.652 -174857.02 (2000.0) 12.3 15.0 USNO r mag 12.3 assumed. Unfiltered CCD magnitudes: SCOU 990301.726 10.96C Oud SCOU 990301.752 10.99C Oud SCOU 990301.779 10.95C Oud SCOU 990301.807 10.98C Oud SCOU 990301.834 10.99C Oud SCOU 990301.856 11.00C Oud observer: Ouda team (K. Matsumoto and T. Kato) telescope: Ouda team rooftop station, 25-cm SCT + ST-7 unfiltered through a objective grism