Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

TCP J00404022+4122433

TCP J00404022+4122433   2025 11 21.3895*  00 40 40.22 +41 22 43.3  18.1 U 1397W 395N  M31       I 0

2025 11 21.4100

Mag.= 17.4, position end figures 40s.24, 44".1 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/TCPinM31_20251121.jpg

2025 11 21.630

Mag.= 16.7, 2025 11 21.630 , http://k-itagaki.jp/images/m31-25-11.jpg

2025 11 22.399

Mag.= 15.9, 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/TCPinM31_20251122.jpg.

2025 11 22.41772

Follow-up photometry Nov. 22.4177UT V mag =15.84, 21.4592UT V mag =17.00. using 0.3-m f/4.0 reflector + V filter CMOS. This object is brighter than yesterday. An image at URL http://orange.zero.jp/k-yoshimoto/TCP_J00404022+4122433_20251122.jpg. observed by K. Yoshimoto, Yamaguchi, Japan.