V418 Ser faint superoutburst? YYYYMMDD(UT) mag observer 20230402.6208 <156c (Yutaka Maeda) 20230403.1695 <175C (Masao Funada) 20230404.4165 16.615o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.1972 16.447o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.1999 16.407o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230405.2054 16.404o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230406.2366 16.90C (Masao Funada)