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张宓 XM28MZ = AT 2020enc ? M82河外新星

POSSIBLE NOVA IN M82
Mi Zhang and Xing Gao, report the discovery of a possible nova (mag approximately 19.9) on several 300-s survey images (limiting mag about 21.0) taken by Xing Gao in Xingming Observatory Sky Survey(C42) around Mar. 16.74830 UT using a r'(Sloan) filtered CCD (+ 0.6-m f/8 Ritchey-Chretien telescope). The transient approximately located at R.A.=09h55m32.63s +69d40’47”.2 (equinox 2000.0). Which is about 103.2″ west and 0.3″ north of the center of the M82. Nothing is visible at this position on archival images taken on Mar. 14.61644 UT(limiting mag 20.5).
NET UCAC-4
XM28MZ C2020 03 16.74830 09 55 32.63 +69 40 47.2 19.9r C42
All images can be seen from: http://xjltp.china-vo.org/XM28MZ.html
C42,Xingming Observatory – NEXT, Mt. Nanshan. Observers M.Zhang,X.Gao,Measurers M.Zhang, 0.6-m f/8 Ritchey-Chretien telescope and CCD.

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