SDSS J155720.75+180720.2 likely superoutburst The 2016 superoutburst was partly observed. The object was not in outburst on July 19 (ASAS-SN data). YYYYMMDD(UT) mag observer 20170503.102 <181C (Eddy Muyllaert) 20170503.528 <161c (Mitsutaka Hiraga) 20170724.910 150C (Jeremy Shears)