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Discovery of a Probable Nova in M31

ATel #8074; K. Hornoch (Astronomical Institute, Ondrejov, Czech Republic), K. Honkova, H. Kucakova and J. Vrastil (Astronomical Institute, Charles U., Prague, Czech Republic)
on 20 Sep 2015; 12:31 UT
Credential Certification: Matt Darnley (M.J.Darnley@ljmu.ac.uk)

Subjects: Optical, Nova, Transient

Referred to by ATel #: 8108, 8145

We report the discovery of a probable nova in M31 on a co-added 990-s R-band CCD frame taken on 2015 Sep. 19.974 UT with the 0.65-m telescope at Ondrejov.

The object designated PNV J00432114+4124597 is located at R.A. = 0h43m21s.14, Decl. = +41o24'59".7 (equinox 2000.0), which is 414.6" east and 531.2" 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:

2015 Sep. 14.836 UT, [20.2; 16.778, 20.2 ± 0.35; 18.778, 19.4 ± 0.3; 19.974, 19.1 ± 0.2.

Discovery image