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张宓 XM18MZ = AT 2019vub ? M33变星

The outburst of a variable star candidate

Mi Zhang and Xing Gao, report the discovery of a variable star candidate (mag approximately 21.0) on several 300-s survey images (limiting mag about 21.5) taken by Xing Gao in Xingming Observatory Sky Survey(C42) around Nov. 26.66021 UT using a unfiltered CCD ( + 0.6-m f/8 Ritchey-Chretien telescope ). The transient approximately located at R.A.=01h34m33.20s +30d39’05”.2 (equinox 2000.0). Which is about 545.9″ east and 31.8″ south of the center of the NGC598(M33). Nothing is visible at this position on archival images taken on Nov. 01.68130 UT(limiting mag 21.5).
NET Gaia DR2
XM18MZ C2019 11 26.66021 01 34 33.20 +30 39 05.2 21.0R C42

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