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张宓 XM83MZ = AT 2022usu = PNV J09550814+6904222 ? M81河外新星

Internal name XM83MZ RA/DEC (2000) 09 55 08.14 +69 04 22.2
Discovery date (UT) 2022-09-17.90677 Discovery Mag 20.1CV
Host name M81 Host Redshift -0.0001
Type Redshift
Other name/s AT 2022usu
PNV J09550814+6904222
References
Reporter/s Mi Zhang, Xing Gao (Xingming Obs.)
Remarks Nova candidate classified by XOSS. Details can be found at http://xjltp.china-vo.org/xm83mz.html
Discovery image taken around 2022 Sep. 17.90677 UT at N88 Follow-up image taken around 2022 Sep. 18.91929 UT at N88 Archival image taken around 2022 Sep. 02.93747 UT at N88 PanSTARRS-1 image
Discovery report

We report the discovery of a possible nova at 20.1CV on several 300-s survey images (limiting mag about 21.0CV) taken by Xing Gao at Xingming Observatory “#”3 (N88) around 2022 Sep. 17.90677 UT using a unfiltered CCD (+ 0.6-m f/8 Ritchey-Chretien telescope). The source is approximately located at RA= 09h55m08.14s, DEC = +69d04m22.2s (equinox 2000.0), which is about 134.2″ west and 27.1″ north of the center of the M81. Nothing is visible at this position on archival images taken on 2022  Sep. 02.93747 UT (limiting mag about 20.5CV).

XM83MZ C2022 09 17.90677 09 55 08.14 +69 04 22.2 20.1CV N88
XM83MZ C2022 09 17.91039 09 55 08.16 +69 04 22.3 20.1CV N88
XM83MZ C2022 09 18.91929 09 55 08.16 +69 04 22.2 19.8CV N88
XM83MZ C2022 09 18.92294 09 55 08.14 +69 04 22.4 19.8CV N88
XM83MZ C2022 09 18.92657 09 55 08.11 +69 04 22.2 18.8CV N88
XM83MZ C2022 09 18.93021 09 55 08.13 +69 04 22.4 19.8CV N88