Independent Discovery of a Probable Nova in M31
ATel #15738; K. Hornoch, H. Kucakova (Astronomical Institute, Ondrejov, Czech Republic), A. W. Shafter, J. C. Horst (SDSU)
on 2 Nov 2022; 21:39 UT
Distributed as an Instant Email Notice Novae
Credential Certification: Allen W. Shafter (ashafter@sdsu.edu)
Subjects: Optical, Nova, Transient
Referred to by ATel #: 15739
We report the independent discovery of a probable nova in M31 on a co-added 990-s R-band CCD frame taken on 2022 Nov. 2.698 UT with the 0.65-m telescope at Ondrejov.
The object was independently discovered on Nov. 1.620 UT by M. Zhang and X. Gao and designated as PNV J00422610+4113390 = AT 2022zhv. The object was designated by us as M31N 2022-11a and is located at R.A. = 0h42m26s.11, Decl. = +41o13'38".9 (equinox 2000.0), which is 205.4" west and 149.6" south of the center of M31 (see link to discovery image below).
The following R-band magnitudes were obtained using the 0.65-m telescope at Ondrejov (OND) and the 1.0-m telescope at Mount Laguna Observatory (MLO):
2022 Sep. 31.706 UT, [19.7 (OND); Nov. 1.208, [19.2 (MLO); 2.129, 18.0 ± 0.2 (MLO, prediscovery); 2.323, 17.80 ± 0.06 (MLO, prediscovery); 2.698, 17.8 ± 0.1 (OND); 2.709, 17.9 ± 0.1 (OND).
As with all extragalactic novae, follow-up spectroscopic and photometric observations to confirm the nova's nature and determine its spectroscopic class and rate of decline (speed class) are encouraged.
Discovery image
