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Discovery of an Apparent Nova in M31

ATel #11904; K. Hornoch, H. Kucakova (Astronomical Institute, Ondrejov, Czech Republic)
on 2 Aug 2018; 08:14 UT
Credential Certification: Matt Darnley (M.J.Darnley@ljmu.ac.uk)

Subjects: Optical, Nova, Transient

Referred to by ATel #: 11923

We report the discovery of an apparent nova in M31 on a co-added 1260-s R-band CCD frame taken on 2018 Aug. 2.087 UT with the 0.65-m telescope at Ondrejov.

The object designated PNV J00424214+4114457 is located at R.A. = 0h42m42s.14, Decl. = +41o14'45".7 (equinox 2000.0), which is 24.6" west and 82.8" 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:

2018 Jul. 29.905 UT, [20.2; Aug. 1.102, 19.0 ± 0.3 (prediscovery); 1.955, 17.7 ± 0.1 (prediscovery); 2.087, 17.5 ± 0.1.

Discovery image