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Discovery of an Apparent Nova in M31

ATel #5671; K. Hornoch (Astronomical Institute, Ondrejov, Czech Republic), H. Kucakova (Astronomical Institute, Charles U., Prague, Czech Republic)
on 17 Dec 2013; 19:17 UT
Credential Certification: Allen W. Shafter (aws@nova.sdsu.edu)

Subjects: Optical, Nova, Transient

Referred to by ATel #: 5723, 5744, 5745

We report the discovery of an apparent nova in M31 on co-added 900-s R-band CCD frames taken on 2013 Dec. 17.696 and 17.747 UT with the 0.65-m telescope at Ondrejov.

The object designated PNV J00425172+4118142 is located at R.A. = 0h42m51s.72, Decl. = +41o18'14".2 (equinox 2000.0), which is 83.4" east and 125.7" 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:

2013 Dec. 15.721 UT, [20.5; 16.787, [20.6; 17.696, 17.6 ± 0.1; 17.747, 17.3 ± 0.1.

Discovery image