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Discovery of a Probable Nova in M31

ATel #12414; K. Hornoch, H. Kucakova (Astronomical Institute, Ondrejov, Czech Republic)
on 21 Jan 2019; 19:30 UT
Credential Certification: Steven Williams (s.williams7@lancaster.ac.uk)

Subjects: Optical, Nova, Transient

We report the discovery of a probable nova in M31 on a co-added 1080-s R-band CCD frame taken on 2019 Jan. 21.697 UT with the 0.65-m telescope at Ondrejov.

The object designated PNV J00424503+4114248 is located at R.A. = 0h42m45s.03, Decl. = +41o14'24".8 (equinox 2000.0), which is 8.0" east and 103.7" 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:

2019 Jan. 19.691 UT, [19.4; 20.936, 19.3 ± 0.4; 21.697, 18.0 ± 0.2; 21.726, 18.0 ± 0.15.

Discovery image