Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PNV J00425751+4059043

PNV J00425751+4059043   2022 02 16.4234*  00 42 57.51 +40 59 04.3  16.0 U  149E1024S  M31       I 0

2022 02 16.4234

http://k-itagaki.jp/images/M31-49.jpg

2022 02 16.5784

Mi Zhang, Xing Gao (Xingming Obs), report the independent discovery of a possible nova at 16.2 CV on several 300-s survey images (limiting mag about 17.5 CV) taken by Xing Gao at Xingming Observatory “#”3 (N88) around Feb. 16.57841, 2022 UT using using a unfiltered CCD (+ 0.6-m f/8 Ritchey-Chretien telescope). The transient was independently discovered and first announced by Koichi Itagaki and designated as PNV J00425751+4059043. The transient approximately located at RA= 00h42m57.50s, DEC = +40d59m04.2s (equinox 2000.0). Which is about 148.6" east and 1024.3" south of the center of the NGC224(M31). Nothing is visible at this position on archival images taken on Feb. 14.55399, 2022 UT (limiting mag 18.5 CV). Images can be found at: http://xjltp.china-vo.org/xm65mz.html

2022 02 17.383

Mag.= 16.9, position end figures 57s.51, 04".7 observed by T. Noguchi, Katori, Japan, using 0.23-m f/10 Schmidt Cassegrain + unfiltered CCD (KAF-0261E), An image http://park8.wakwak.com/~ngc/images/PNVinM31_20220217.jpg.

2022 02 17.415

F. Watanabe (Nayoro Observatory, Hokkaido, Japan) measured the magnitude as R=17.0 +/- 0.1 from a stacked image (30 sec x 20 frames) taken on 2022 Feb. 17.415 UT using a 0.4-m f/10 Meili telescope. Position end figures 57s.47, 04".5 are given.