CH Her likely superoutburst

Time-resolved photometry is strongly encouraged. Not done before. (ZTF and ATLAS data suggest an SU UMa star, as previously reported)

YYYYMMDD(UT) mag observer 20230515.597 <175C (Mitsutaka Hiraga) 20230515.6874 <151c (Yutaka Maeda) 20230516.5026 16.842g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230516.6808 <144c (Yutaka Maeda) 20230519.6916 <141c (Yutaka Maeda) 20230521.4021 14.456g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230522.5081 14.468g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230523.7832 149C (Masayuki Moriyama)