I obtained a few images last night (Apr 6/7, 2022) and there’s indeed nothing visible at the quoted location of ASASSN-22ff down to mag 18 (CV)

Best regards

Tonny Vanmunster

www.cbabelgium.com http://www.cbabelgium.com

www.peranso.com http://www.peranso.com

From: Kenta TAGUCHI kentagch@kusastro.kyoto-u.ac.jp Sent: Thursday, 7 April 2022 18:35 To: vsnet-alert@ooruri.kusastro.kyoto-u.ac.jp; vsnet-outburst@ooruri.kusastro.kyoto-u.ac.jp; vsnet-newvar@ooruri.kusastro.kyoto-u.ac.jp Cc: Kenta TAGUCHI kentagch@kusastro.kyoto-u.ac.jp Subject: [vsnet-outburst 28569] Re: [vsnet-alert 26701] ASASSN-22ff

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-dc02fc...

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