Mi Zhang and Xing Gao, report the discovery of a possible nova (mag approximately 18.2) on several 300-s survey image (limiting mag about 19.0) taken by Xing Gao at Xingming Observatory #3 (N88) around Oct. 31.52638 UTC using a unfiltered CCD (+ 0.6-m f/8 Ritchey-Chretien telescope). The transient approximately located at R.A.=00h42m20.16s +41d14’28”.5 (equinox 2000.0). Which is about 272.4″ west and 100″ south of the center of the NGC224(M31). Nothing is visible at this position on archival images taken on Oct. 30.55322 (limiting mag 19.0) . Images can be found at: http://xjltp.china-vo.org/xm42mz.html
NET UCAC-4
XM42MZ C2020 10 31.52638 00 42 20.16 +41 14 28.5 18.2 V N88
XM42MZ C2020 10 31.53014 00 42 20.15 +41 14 28.4 18.3 V N88
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| Discovery image taken by N88 on Oct. 31.52638 UTC,2020 | Archival image taken by N88 on Oct. 30.55322 UTC,2020 | PS Image |
| AT 2020yky (= XM42MZ) (= PNV J00424960+4116523) | |||
| JDHEL Gmag. 2459154.031 18.24 2459154.035 18.34 2459155.082 17.06 2459155.085 17.04 2459156.064 16.51 2459156.067 16.52 2459157.082 16.94 2459157.086 16.93 2459160.035 17.32 2459160.039 17.30 2459160.403 17.43 2459161.022 17.60 2459161.025 17.56 2459161.333 17.66 2459161.337 17.66 |
JDHEL Vmag. 2459155.154 16.95 2459155.158 16.87 2459156.086 16.42 2459156.09 16.50 2459156.094 16.51 2459156.098 16.46 2459156.102 16.48 2459157.104 16.90 2459157.108 16.94 2459157.112 17.01 2459157.117 17.00 2459157.121 16.97 2459157.125 16.99 2459159.126 17.28 2459159.13 17.30 2459161.31 17.86 |
JDHEL Rmag. 2459155.155 16.82 2459155.159 16.83 2459156.087 16.39 2459156.091 16.39 2459156.095 16.31 2459156.099 16.34 2459156.103 16.37 2459157.105 16.75 2459157.11 16.76 2459157.114 16.75 2459157.118 16.79 2459157.122 16.76 2459157.126 16.81 2459159.127 17.00 2459161.303 17.41 2459161.314 17.43 2459161.326 17.44 |
JDHEL Imag. 2459155.156 16.80 2459155.16 16.70 2459156.088 16.33 2459156.092 16.30 2459156.096 16.22 2459156.101 16.32 2459157.107 16.70 2459157.111 16.57 2459157.115 16.53 2459157.119 16.56 2459157.123 16.58 2459159.124 16.60 2459159.128 16.70 2459161.307 17.29 2459161.318 17.29 2459161.329 17.29 |