V630 Cyg superoutburst YYYYMMDD(UT) mag observer 20200822.9993 <141 (Eddy Muyllaert) 20200823.646 <153 (Hiroyuki Maehara) 20200824.565 <151 (Hiroyuki Maehara) 20200824.9785 <141 (Eddy Muyllaert) 20200828.735 139 (Hiroyuki Maehara) 20200829.766 140 (Hiroyuki Maehara)