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Independent Discovery of an Apparent Nova in M31

ATel #11849; K. Hornoch, H. Kucakova (Astronomical Institute, Ondrejov, Czech Republic)
on 14 Jul 2018; 08:03 UT
Credential Certification: Matt Darnley (M.J.Darnley@ljmu.ac.uk)

Subjects: Optical, Nova, Transient

Referred to by ATel #: 11866

We report the independent discovery of an apparent nova in M31 on a co-added 720-s R-band CCD frame taken on 2018 Jul. 13.991 UT with the 0.65-m telescope at Ondrejov.

The object was independently discovered also by K. Itagaki (designated as PNV J00420765+4119438) see here. The object was designated by us as M31N 2018-07b and is located at R.A. = 0h42m07s.64, Decl. = +41o19'44".0 (equinox 2000.0), which is 413.4" west and 215.5" 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:

2018 Jul. 9.072 UT, [20.1; 13.991, 16.40 ± 0.08.

Discovery image