NY Ser likely superoutburst

Kiyota-san's data were still flat on Apr. 27.

YYYYMMDD(UT) mag observer 20230421.976 <154 (Pavol A. Dubovsky) 20230422.6359 <150c (Yutaka Maeda) 20230422.7883 <166C (Masayuki Moriyama) 20230426.6233 148cG (Yutaka Maeda) 20230426.6233 148cG (Yutaka Maeda) 20230426.7585 152C (Masayuki Moriyama) 20230427.6562 144:c (Yutaka Maeda) 20230427.7757 150C (Masayuki Moriyama) 20230428.1741 14.863g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014))