I think ASASSN-22ff is identical to C/2020 K1 (PANSTERRS).
    # http://astro.vanbuitenen.nl/comet/2020K1
(I'll appreciate if someone should cross-check it.)

Best Regards,
Kenta Taguchi


On 2022/04/07 16:11, Naoto Kojiguchi wrote:
ASASSN-22ff

    Large outburst amplitude of 7 mag.

ASASSN-22ff  --- ------- 19:2:40.48 18:17:22 2022-04-5.4 15.14 SDSS DSS VIZIER -------  CV candidate, matches to PS1 g=22.5, g>18.3 on 2022-04-03.37, g=15.6 on 2022-04-05.40

ASAS-SN Sky Patrol (contaminated):
https://asas-sn.osu.edu/sky-patrol/coordinate/26425847-1978-4d76-9407-dc02fcc314f0

IDs:
190240.408 +181722.540 PS1_DR1_129942856683518080 g=22.5092(0.1801) r=21.8079(0.0718) i=21.3872(0.0728) z=21.011(0.1756) y=--(--)
190240.408 +181722.680 PS1_DR2_129942856683518080 g=23.1678(0.118422) r=21.898(0.053925) i=21.3788(0.04597) z=21.4571(0.104511) y=21.4205(0.197335)
190240.417 +181722.675 SDSSJ190240.41+181722.6 ObsDate=2004.7096 u=23.937(23.937) g=22.608(0.415) r=21.688(0.251) i=20.849(0.186) z=20.385(0.353)

ASASSN-22ff 20220403.37 <183g ASN
ASASSN-22ff 20220405.40 156g ASN
--
________________________________________________________________
 田口 健太　(TAGUCHI, Kenta)
 京都大学大学院理学研究科宇宙物理学教室
 (Department of Astronomy, Graduate School of Science, Kyoto University)
 kentagch@kusastro.kyoto-u.ac.jp
 09090536980