Mi Zhang and Xing Gao, report the discovery of a possible nova (mag approximately 16.9) on several 300-s survey image (limiting mag about 19.5) taken by Xing Gao at Xingming Observatory #3 (N88) around Oct. 22.55024 UTC using a unfiltered CCD (+ 0.6-m f/8 Ritchey-Chretien telescope). The transient approximately located at R.A.=00h42m37.33s +41d20’51”.9 (equinox 2000.0). Which is about 78.8″ west and 283.4″ north of the center of the NGC224(M31). Nothing is visible at this position on archival images taken on Oct. 21.55558 (limiting mag 20.5) . Images can be found at: http://xjltp.china-vo.org/xm41mz.html
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| Discovery image taken by N88 on Oct. 22.55024 UTC,2020 | Archival image taken by N88 on Oct. 21.55558 UTC,2020 | PS Image |
| AT2020xyv (= XM41MZ) (= PNV J00423733+4120519) | |||
| JDHEL Gmag. 2459139.188 20.33 2459141.261 20.25 2459143.134 20.30 2459145.055 16.65 2459145.059 16.65 2459146.195 17.76 2459146.206 17.73 2459148.111 18.72 2459148.115 18.72 2459149.081 19.17 2459149.085 19.05 2459150.119 19.37 2459150.122 19.45 2459151.144 20.15 |
JDHEL Vmag. 2459144.169 18.99 2459144.202 18.94 2459145.085 16.79 2459145.086 16.71 2459145.087 16.71 2459145.157 16.86 2459145.161 16.86 2459145.166 16.87 2459145.17 16.85 2459145.174 16.83 2459145.178 16.88 2459145.182 16.88 2459145.186 16.91 2459145.19 16.90 2459145.194 16.90 2459145.198 16.90 2459145.208 16.95 2459145.212 16.96 2459145.216 16.85 2459145.22 16.93 2459145.224 16.97 2459145.228 17.02 2459145.232 17.08 2459145.236 17.01 2459145.241 17.07 2459145.245 17.03 2459145.249 17.09 2459145.253 17.02 2459145.257 17.08 2459145.261 17.06 2459145.265 17.06 2459145.269 17.12 2459145.273 17.06 2459145.277 17.06 2459145.282 17.11 2459145.286 17.08 2459145.29 17.09 2459145.294 17.09 2459145.298 17.11 2459145.302 17.17 2459145.306 17.12 2459145.31 17.09 2459145.314 17.12 2459145.318 17.12 2459145.323 17.16 2459145.327 17.11 2459145.331 17.13 2459145.335 17.10 2459145.339 17.09 2459145.343 17.16 2459145.347 17.20 2459145.351 17.19 2459145.355 17.18 2459145.359 17.21 2459145.363 17.23 2459145.367 17.23 2459145.371 17.20 2459145.375 17.28 2459145.379 17.31 2459145.383 17.26 2459145.387 17.30 2459145.391 17.30 2459145.395 17.29 2459145.399 17.25 2459145.403 17.31 2459145.407 17.37 2459145.411 17.35 2459145.415 17.29 2459145.419 17.34 2459145.423 17.31 2459145.427 17.38 2459145.431 17.29 2459145.435 17.30 2459145.439 17.31 2459145.443 17.35 2459145.447 17.33 |
JDHEL Rmag. 2459144.166 18.82 2459144.171 18.94 2459144.199 18.53 2459145.089 16.34 2459145.09 16.32 2459145.091 16.32 2459145.159 16.42 2459145.163 16.37 2459145.167 16.36 2459145.171 16.39 2459145.175 16.37 2459145.179 16.41 2459145.183 16.43 2459145.188 16.42 2459145.192 16.41 2459145.196 16.39 2459145.2 16.42 2459145.209 16.42 2459145.213 16.46 2459145.217 16.43 2459145.222 16.44 2459145.226 16.45 2459145.23 16.45 2459145.234 16.46 2459145.238 16.47 2459145.242 16.48 2459145.246 16.49 2459145.25 16.46 2459145.254 16.52 2459145.258 16.51 2459145.262 16.53 2459145.266 16.46 2459145.271 16.50 2459145.275 16.52 2459145.279 16.53 2459145.283 16.56 2459145.287 16.53 2459145.291 16.57 2459145.295 16.56 2459145.299 16.52 2459145.303 16.57 2459145.308 16.56 2459145.312 16.52 2459145.316 16.56 2459145.32 16.54 2459145.324 16.55 2459145.328 16.54 2459145.332 16.56 2459145.336 16.58 2459145.34 16.56 2459145.344 16.61 2459145.348 16.59 2459145.352 16.62 2459145.356 16.61 2459145.36 16.67 2459145.364 16.61 2459145.368 16.62 2459145.372 16.65 2459145.376 16.72 2459145.38 16.68 2459145.384 16.67 2459145.388 16.68 2459145.393 16.69 2459145.397 16.63 2459145.401 16.70 2459145.405 16.68 2459145.409 16.69 2459145.413 16.71 2459145.417 16.72 2459145.421 16.69 2459145.425 16.69 2459145.429 16.73 2459145.433 16.74 2459145.437 16.73 2459145.441 16.74 2459145.445 16.71 2459150.321 18.93 2459150.329 18.50 |
JDHEL Imag. 2459145.093 15.99 2459145.094 16.00 2459145.095 16.01 2459145.16 16.02 2459145.164 16.00 2459145.168 15.99 2459145.172 16.00 2459145.176 15.99 2459145.181 16.03 2459145.185 16.01 2459145.189 16.02 2459145.193 16.01 2459145.197 16.03 2459145.201 16.05 2459145.211 16.02 2459145.215 16.03 2459145.219 16.03 2459145.223 16.03 2459145.227 16.05 2459145.231 16.05 2459145.235 16.07 2459145.239 16.03 2459145.243 16.06 2459145.247 16.12 2459145.251 16.10 2459145.255 16.10 2459145.26 16.01 2459145.264 16.10 2459145.268 16.08 2459145.272 16.08 2459145.276 16.04 2459145.28 16.15 2459145.284 16.18 2459145.288 16.08 2459145.292 16.07 2459145.297 16.11 2459145.301 16.12 2459145.305 16.11 2459145.309 16.06 2459145.313 16.12 2459145.317 16.08 2459145.321 16.08 2459145.325 16.06 2459145.329 16.11 2459145.333 16.08 2459145.338 16.06 2459145.342 16.12 2459145.346 16.10 2459145.35 16.17 2459145.354 16.14 2459145.358 16.17 2459145.362 16.14 2459145.366 16.17 2459145.37 16.24 2459145.374 16.17 2459145.378 16.23 2459145.382 16.15 2459145.386 16.19 2459145.39 16.14 2459145.394 16.25 2459145.398 16.25 2459145.402 16.22 2459145.406 16.22 2459145.41 16.29 2459145.414 16.28 2459145.418 16.21 2459145.422 16.28 2459145.426 16.26 2459145.43 16.26 2459145.434 16.29 2459145.438 16.26 2459145.442 16.25 2459145.446 16.25 |