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Discovery of a Probable Nova in M31

ATel #11784; K. Hornoch, H. Kucakova (Astronomical Institute, Ondrejov, Czech Republic), M. Wolf (Astronomical Institute, Charles U., Prague, Czech Republic)
on 26 Jun 2018; 13:03 UT
Credential Certification: Steven Williams (scw@astro.ljmu.ac.uk)

Subjects: Optical, Nova, Transient

Referred to by ATel #: 11845

We report the discovery of a probable nova in M31 on a co-added 1800-s unfiltered CCD frame taken on 2018 Jun. 26.010 UT with the 0.65-m telescope at Ondrejov.

The object designated PNV J00424144+4117377 is located at R.A. = 0h42m41s.44, Decl. = +41o17'37".7 (equinox 2000.0), which is 32.5" west and 89.2" 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 Jun. 21.055 UT, [19.7; 26.010, 17.1 ± 0.1; 26.052, 17.1 ± 0.1.

Discovery image