Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

TCP J23580961+5502508

TCP J23580961+5502508   2022 09 30.4363*  23 58 09.61 +55 02 50.8  12.0 U             Cas       9 0

2022 09 30.436

Discovered by Tadashi Kojima, Tsumagoi,Gunma-ken, Japan, on three frames(5_s exp) under limiting mag.= 13.5 taken by Canon EOS 6D digital camera + 135mm f/3.5 lens. Nothing is visible at this location taken on 2022 Sep29.601 UT under limiting mag.= 14.2, Mag=13.5 taken by Canon EOS 6D digital camera +200mm f3.2lens.

2022 09 30.549

Mag.= 12.0, position end figures 09s.58, 50".3 observed by T. Noguchi, Katori, Japan, using 0.23-m f/10 Schmidt-Cassegrain + unfiltered CCD (KAF-0261E), An image at http://park8.wakwak.com/~ngc/images/TCPinCas_20220930.jpg.

2022 09 30.4435

Yuji Nakamura, Kameyama, Mie, Japan, found this TCP on two frames (6 sec exp. limiting mag 13.5) taken by 135mm/F4.0 lens and CMOS camera. Mag.= 12.2, position end figures 09s.54, 49".9. Nothing is visible at this location on the frames taken on 2022 Sep. 26.4587 UT (6 sec exp. limiting mag 13.5) by same instrument. --- Isao Endoh (NAOJ)

2022 09 30.7431

Photometry results were B=11.77, V=11.70, Rc=11.77 and Ic=11.83 with 0.28m SCT+QSI 632ws CCD acmera st Kamagaya, Japan. Seiichiro Kiyota, Japan

2022 10 01.81034

This transient was observed on 2022 10 01.81034 by Andrea Mantero from C77 - Bernezzo Observatory using 0.25-m f/4 reflector - CCD Atik 314L Scale 1,33"/pixel. Stack of 2 unfiltered b1x1 frames x 90 sec. guiding exposures, show the source at 11.8 Mag.