Independent Discovery of a Probable Nova in M31
ATel #16285; K. Hornoch (Astronomical Institute, Ondrejov, Czech Republic), P. Zasche, H. Kucakova (Charles University, Prague, Czech Republic), A. W. Shafter (SDSU)
on 12 Oct 2023; 12:03 UT
Credential Certification: Allen W. Shafter (ashafter@sdsu.edu)
Subjects: Optical, Nova, Transient
We report the independent discovery of a probable nova found during our survey of the central region of M31. The object was discovered on a co-added 810-s R-band CCD frame taken on 2023 Oct. 11.895 UT with the 0.65-m telescope at Ondrejov.
The object was independently discovered on May 11.592 UT by J. Xu et al. and designated as PNV J00430061+4119400 = AT 2023uri.
The object was designated by us as M31N 2023-10d and is located at R.A. = 0h43m00s.64, Decl. = +41o19'40".3 (equinox 2000.0), which is 183.9" east and 211.8" north 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 (D65):
Date [UT] | Mag | Err | Filter | Telescope
2023-10-10.735 | <19.3 | | R | D65
2023-10-11.895 | 16.72 | 0.08 | R | D65
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
