[vsnet-newvar 7998] ZTF20acyxwzf (= new ASASSN transient object): possible WZ Sge star

[Kojiguchi Naoto]

ZTF20acyxwzf =ASASSN-21au: possible WZ Sge star

     Large outburst amplitude of 7 mag. According to the ASASSN data, no past outburst.
The ZTF data clearly indicate ~1 mag brightening and redding between 2020 June and before outburst (e.g. vsnet-alert 23441).

ASASSN infomation:
14:23:52.86 +78:30:13.0
https://twitter.com/SuperASASSN/status/1357693824378621952
https://twitter.com/SuperASASSN/status/1357703053558894592

Lasair:
https://lasair.roe.ac.uk/object/ZTF20acyxwzf/

IDs:
142352.812 +783013.331 Gaia_EDR3_1714575958453248000 Plx=-(-) pmRA=-(-) pmDE=-(-) G=20.923672(0.019084) BP-RP=0.077957
142352.824 +783013.272 PS1_202202159703645164 g=20.9555(0.0592) r=21.0433(0.0918) i=21.3549(0.0364) z=20.7246(0.1677)
142352.948 +783013.255 GALEXJ142352.9+783013 NUV=21.3876(0.3395)

ZTF20acyxwzf =ASASSN-21au
     20210203.451 19.135zr ZLR
     20210204.500 <14.357g ASN
     20210204.455 17.826zg ZLR
     20210204.408 18.011zr ZLR
     20210205.422 13.303g ASN
     20210205.472 14.265zg ZLR
     20210205.435 14.177zr ZLR