ASASSN-13ak superoutburst Known SU UMa star. YYYYMMDD(UT) mag observer 20230509.558 <177C (Mitsutaka Hiraga) 20230512.3668 17.772g (ASAS-SN Sky Patrol Photom. DB (Hart+2023; Shappee+2014)) 20230512.5490 19.026o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.5543 19.234o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230512.5897 18.924o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.4253 14.394c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.4271 14.394c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.4299 14.391c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.4495 14.391c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.4819 14.394c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.4837 14.402c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.4911 14.407c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230514.5094 14.402c (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230517.653 144c (Tadashi Kojima) 20230518.5695 14.634o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021)) 20230518.5727 14.695o (ATLAS Forced Photometry (Tonry+2018; Shingles+2021))