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Table C.2.

Reference stars used for MASTER photometry.

Gaia DR2 source id RA Dec (J2000) Gaia g mag
5929817258354020000 253.5424 −54.0430 14.781
5929817395792950000 253.5914 −54.0381 14.078
5929817430152690000 253.6073 −54.0314 13.581
5929817361433580000 253.5256 −54.0165 14.980
5929817185290700000 253.5025 −54.0461 14.200
5929820178931820000 253.4949 −54.0292 14.685
5929796642509320000 253.4683 −54.0649 14.025
5929816571159180000 253.6535 −54.0655 13.114
5929818014268200000 253.6909 −54.0304 14.202

Notes. In addition to these reference stars we selected a large list of comparison stars with similar brightness to the object. This was done to determine the measurement error of its magnitude as a luminosity variation of these stars (See Lipunov et al. 2019, for more details).

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