MASTER OT J185838.73+460207.2 outburst$B!"(Brecent data YYYYMMDD(UT) mag observer 20230412.6956 <157c (Yutaka Maeda) 20230415.5941 19.282o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230416.6818 <156c (Yutaka Maeda) 20230417.5486 15.529c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230417.5523 15.513c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230417.5563 15.456c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230417.6981 148c (Yutaka Maeda)