Discovery of an Apparent Nova in M31

ATel #7584; K. Hornoch (Astronomical Institute, Ondrejov, Czech Republic), K. Honkova (Astronomical Institute, Charles U., Prague, Czech Republic)
on 3 Jun 2015; 09:23 UT
Credential Certification: Martin Henze (martin.henze@sciops.esa.int)

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We report the discovery of an apparent nova in M31 on a co-added 1080-s R-band CCD frame taken on 2015 Jun. 3.047 UT with the 0.65-m telescope at Ondrejov.

The object designated PNV J00424253+4115139 is located at R.A. = 0h42m42s.53, Decl. = +41o15'13".9 (equinox 2000.0), which is 20.2" west and 54.6" 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:

2015 May 31.030 UT, [18.8; Jun. 3.047, 16.37 ± 0.08.

We thank H. Kucakova for getting M31 images on May 31.030 UT.

Discovery image