CRTS J172515.5+073249: relatively rare outburst YYYYMMDD(UT) mag observer 20210927.1740 20.916zg (Zwicky Transient Facility (Masci et al., 2019)) 20211014.8681 <177C (Eddy Muyllaert) 20211021.8472 <172C (Eddy Muyllaert) 20211103.8333 <163C (Eddy Muyllaert) 20220107.2938 <163C (Eddy Muyllaert) 20220213.4971 15.400zg (Zwicky Transient Facility Lasair (Masci+ 2019))