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PSP项目 PSP21ac = AT 2021aceg = PNV J00473256+3938102 * M31河外新星

Leiming Tang, Yanxi Li, Wenjie Zhou, Jianlin Xu, Yi Ding, Jiangao Ruan, Jingyuan Zhao, Guoyou Sun, Mi Zhang, Xing Gao (Xingming Obs), report the discovery of a possible nova (mag approximately 16.1 G) on one 30-s survey image (limiting mag about 19.0) taken by Xing Gao at Xingming Observatory #2 (N89) around 2021 Oct. 25.56992 UT using a unfiltered CCD (0.5m f/4 reflector). The transient approximately located at R.A.=00h47m32.56s +39d38’10”.2 (equinox 2000.0). Which is about 3249.8″ east and 5878.3″ south of the center of the NGC224(M31). Nothing is visible at this position on archival images taken on Oct. 21.79247 (limiting mag 17.5). Images can be found at: http://xjltp.china-vo.org/psp21ac.html

NET Gaia DR2
PSP21ac C2021 10 24.74884 00 47 32.46 +39 38 10.3 18.02G N89
PSP21ac C2021 10 25.56992 00 47 32.56 +39 38 10.2 16.05G N89
PSP21ac C2021 10 25.68073 00 47 32.44 +39 38 10.7 16.10G N88
PSP21ac C2021 10 25.68205 00 47 32.43 +39 38 10.1 16.11G N88

NET UCAC-4
2021aceg C2021 10 25.91333 00 47 32.45 +39 38 10.1 16.19B N88
2021aceg C2021 10 25.91709 00 47 32.43 +39 38 10.4 16.77V N88
NET Gaia DR2
2021aceg C2021 10 25.92083 00 47 32.43 +39 38 10.4 15.44g N88
NET UCAC-4
2021aceg C2021 10 25.92459 00 47 32.43 +39 38 10.4 15.94r N88
NET USNO-B1.0
2021aceg C2021 10 25.92836 00 47 32.42 +39 38 10.7 16.51i N88

Discovery image taken by N89 around 2021 Oct. 25.56992 UT Archival image taken by N89 around 2021 Oct. 21.79247 UT Follow-up image taken by N88 around 2021 Oct. 25.68073 UT Pre-discovery image taken by N89 around 2021 Oct. 24.74884 UT PS Image

 

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