Carter_SDSSJ173047.59+554518.5 rare superoutburst (AM CVn) Time-resolved photometry is very much encouraged. Last one in 2016. YYYYMMDD(UT) mag observer 20230519.4613 19.506zr (ZTF Alert DC mag (Masci+ 2019)) 20230520.555 <175C (Mitsutaka Hiraga) 20230521.4107 19.487zr (ZTF Alert DC mag (Masci+ 2019)) 20230522.3612 19.660zr (ZTF Alert DC mag (Masci+ 2019)) 20230523.4322 19.479zg (ZTF Alert DC mag (Masci+ 2019)) 20230523.564 <172C (Mitsutaka Hiraga) 20230525.3606 19.310zr (ZTF Alert DC mag (Masci+ 2019)) 20230525.3891 19.188zr (ZTF Alert DC mag (Masci+ 2019)) 20230525.4054 19.499zg (ZTF Alert DC mag (Masci+ 2019)) 20230531.522 144C (Mitsutaka Hiraga) 20230531.621 144C (Mitsutaka Hiraga) 20230601.2496 14.405g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))