EY Cyg outburst (Long-Porb SS Cyg star) YYYYMMDD(UT) mag observer 20230329.8293 148C (Masayuki Moriyama) 20230401.846 148C (Mitsutaka Hiraga) 20230402.7948 144:cG (Yutaka Maeda) 20230407.7522 11.21V (Kenji Hirosawa) 20230407.7805 112c (Tadashi Kojima)