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张宓 XM39MZ = AT 2020wuo ? M31河外新星

Mi Zhang and Xing Gao, report the discovery of a possible nova (mag approximately 19.5) on several 300-s survey image (limiting mag about 20.5) taken by Xing Gao at Xingming Observatory #3 (N88) around Oct. 15.72623 UTC using a unfiltered CCD (+ 0.6-m f/8 Ritchey-Chretien telescope). The transient approximately located at R.A.=00h42m36.20s +41d20’35”.5 (equinox 2000.0). Which is about 91.6″ west and 267″ north of the center of the NGC224(M31). Nothing is visible at this position on archival images taken on Sep. 02.88803 (limiting mag 20.5) . Possible the recurrent nova M31 1991-11a. Images can be found at: http://xjltp.china-vo.org/xm39mz.html

NET Gaia DR2
XM39MZ C2020 08 30.85306 00 42 36.19 +41 20 35.3 >20.5 G N88
XM39MZ C2020 08 30.85679 00 42 36.19 +41 20 35.2 >20.5 G N88
XM39MZ C2020 09 02.89176 00 42 36.15 +41 20 35.5 20.3 G N88
XM39MZ C2020 09 08.67877 00 42 36.19 +41 20 35.2 20.3 G N88
XM39MZ C2020 09 08.68272 00 42 36.20 +41 20 35.1 20.0 G N88
XM39MZ C2020 09 12.63111 00 42 36.22 +41 20 35.6 19.9 G N88
XM39MZ C2020 09 12.74852 00 42 36.22 +41 20 35.4 20.0 G N88
XM39MZ C2020 09 13.88773 00 42 36.20 +41 20 35.3 19.8 G N88
XM39MZ C2020 09 13.89144 00 42 36.19 +41 20 35.3 19.8 G N88
XM39MZ C2020 09 16.60793 00 42 36.25 +41 20 35.1 19.7 G N88
XM39MZ C2020 09 21.76422 00 42 36.20 +41 20 35.3 19.7 G N88
XM39MZ C2020 09 21.76799 00 42 36.21 +41 20 35.3 19.8 G N88
XM39MZ C2020 09 22.63510 00 42 36.21 +41 20 35.5 19.8 G N88
XM39MZ C2020 09 22.63894 00 42 36.20 +41 20 35.1 19.8 G N88
XM39MZ C2020 09 23.78358 00 42 36.19 +41 20 35.4 19.7 G N88
XM39MZ C2020 09 23.78736 00 42 36.20 +41 20 35.4 19.7 G N88
XM39MZ C2020 09 29.85657 00 42 36.17 +41 20 35.1 19.7 G N88
XM39MZ C2020 09 29.87784 00 42 36.19 +41 20 35.4 19.6 G N88
XM39MZ C2020 10 05.57144 00 42 36.24 +41 20 36.0 19.7 G N88
XM39MZ C2020 10 05.57522 00 42 36.24 +41 20 35.4 19.7 G N88
XM39MZ C2020 10 07.65027 00 42 36.20 +41 20 34.9 19.7 G N88
XM39MZ C2020 10 07.65402 00 42 36.22 +41 20 35.5 19.6 G N88
XM39MZ C2020 10 08.70795 00 42 36.20 +41 20 35.3 19.7 G N88
XM39MZ C2020 10 08.71172 00 42 36.20 +41 20 35.5 19.8 G N88
XM39MZ C2020 10 10.74074 00 42 36.20 +41 20 35.1 19.7 G N88
XM39MZ C2020 10 10.74449 00 42 36.22 +41 20 35.5 19.7 G N88
XM39MZ C2020 10 15.72623 00 42 36.20 +41 20 35.5 19.5 G N88
XM39MZ C2020 10 15.73002 00 42 36.21 +41 20 35.4 19.5 G N88
XM39MZ C2020 10 15.76921 00 42 36.20 +41 20 35.5 19.5 G N88
XM39MZ C2020 10 15.77294 00 42 36.20 +41 20 35.5 19.5 G N88
XM39MZ C2020 10 16.64648 00 42 36.21 +41 20 35.6 19.8 G N88
XM39MZ C2020 10 16.65024 00 42 36.20 +41 20 35.4 19.7 G N88
XM39MZ C2020 10 16.68328 00 42 36.21 +41 20 35.4 19.7 G N88
XM39MZ C2020 10 16.68704 00 42 36.22 +41 20 35.4 19.5 G N88

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