Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

TCP J22561804+4109534

TCP J22561804+4109534   2022 06 26.6897*  22 56 18.04 +41 09 53.4  14.0 U             Lac       9 8

2022 06 26.6897

Discovered by Yuji Nakamura, Kameyama, Mie, Japan, on two frames (30-s exp. limiting mag 16.0) taken by 10cm/F3.0 refractor and CMOS camera. Nothing is visible at this location on the frames taken on 2022 June 18.7097 UT (30-s exp. limiting mag 16.0) by same instrument. --- Isao Endoh (NAOJ)

2022 06 26.3301

The ASAS-SN Sky Patrol (Shappee et al., 2014ApJ...788...48S and Kochanek et al., 2017PASP..129j4502K) has also observed this transient: 2022 June 24.4688 UT, fainter than gmag. 17.55; 26.3301, gmag. 14.70; ...; 26.3404, 14.69 – complete light curve at https://asas-sn.osu.edu/sky-patrol/coordinate/a342649c-16c0-43e6-86f6-933b964a7377 – There is a likely progenitor in Pan-STARRS1 (J2000.0 position end figures 18.05s and 54.3"; gmag. 22.1, rmag. 22.1). Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)

2022 06 27.6267

Photometry results were B=14.30, V=14.38, Rc=14.52 and Ic=14.57 with 0.28mSCT(F7.3)+QSI 632ws CCD at TAO Kamagaya, Japan.https://meineko.com/ccd/TCP_J22561804+4109534.jpg Seiichiro Kiyota (Japan)

2022 07 6.4812

F. Watanabe (Nayoro Observatory, Hokkaido, Japan) performed a follow-up observation for this transient using a 0.4-m f/10 Meili telescope on 2022 Jul. 6.48 UT and measured the magnitude as R=15.6 +/- 0.1.