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Discovery of a Possible Nova in M31

ATel #3976; K. Hornoch (Astronomical Institute, Ondrejov, Czech Republic), J. Vrastil (Astronomical Institute, Charles U., Prague, Czech Republic)
on 19 Mar 2012; 01:56 UT
Credential Certification: Allen W. Shafter (aws@nova.sdsu.edu)

Subjects: Optical, Nova, Transient

Referred to by ATel #: 3987, 4181, 4281

We report the discovery of a possible nova in M31 on a co-added 720-s R-band CCD frame taken on Mar. 16.763 UT with the 0.65-m telescope at Ondrejov.

The new object is located at R.A. = 0h42m27s.73, Decl. = +41o08'13".6 (equinox 2000.0), which is 187.3" west and 474.9" south of the center of M31.

The following magnitudes were obtained:

2012 Mar. 4.800 UT, [20.0 (K. Hornoch, 0.65-m telescope at Ondrejov); 16.763, 18.9 +/- 0.15 (Hornoch and J. Vrastil, 0.65-m telescope at Ondrejov).

A discovery image of the PNV J00422773+4108136