TCP J19092450+3041330 = ZTF21abvytzx     Large outburst amplitude of 7 mag. Possible WZ Sge-type object. TCP J19092450+3041330   2021 08 29.6223*  19 09 24.50 +30 41 33.0  14.4 U             Lyr       9 0 ZTF: ZTF21abvytzx 19:09:24.698 30:41:30.508 ASASSN: https://asas-sn.osu.edu/sky-patrol/coordinate/e17c057d-09dc-40f2-9a88-13c554... IDs: 190924.695 +304130.404 g=21.7602(0.0542) r=21.2643(0.1928) i=21.7743(0.0586) z=20.7550(0.1853) YYYYMMDD(UT)   mag  observer 20210826.170 <15.825g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20210828.212 16.851zg (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210828.280 16.701zr (Zwicky Transient Facility Lasair (Masci+ 2019)) 20210829.240 14.532g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20210829.303 14.777cy (ATLAS Forced Photometry (Tonry et al. 2018, PASP 130, 0))