ASASSN-21rt = ZTF21acahuzg

Large outburst amplitude of 7 mag. Possible WZ Sge-type object.

ASASSN-21rt  --- ------- 22:26:58.89 22:54:47.5 2021-09-14.07 15.15 -------  CV candidate, matches to SDSS g=22.0, g>17.5 on 2021-09-08.28, g=17.5 on 2021-09-10.28, g=15.1 on 2021-09-11.88, g=15.4 on 2021-09-14.097.

IDs: 222658.803 +225448.160 SDSSJ222658.80+225448.1 ObsDate=2004.7123 u=23.406(0.890) g=22.070(0.120) r=22.308(0.232) i=22.225(0.299) z=22.223(0.713) 222658.805 +225448.056 SDSSJ222658.80+225448.0 ObsDate=2008.7511 u=22.644(0.399) g=22.970(0.196) r=22.392(0.172) i=22.351(0.259) z=22.637(0.741)

YYYYMMDD(UT) mag observer 20210908.285 <16.563g ASN 20210908.512 20.849o ATF 20210910.225 18.806zg ZLR 20210910.286 <17.301g ASN 20210910.355 17.180cy ATF 20210910.372 17.177zr ZLR 20210911.887 15.086g ASN 20210912.257 15.108zg ZLR 20210912.407 15.476o ATF 20210914.097 15.265g ASN 20210914.245 15.552zr ZLR 20210914.275 15.308zg ZLR

ATF (ATLAS Forced Photometry (Tonry et al. 2018)) ASN (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) ZLR (Zwicky Transient Facility Lasair (Masci+ 2019))