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Discovery of an Apparent Nova in M31

ATel #4194; K. Hornoch (Astronomical Institute, Ondrejov, Czech Republic)
on 20 Jun 2012; 16:54 UT
Credential Certification: Allen W. Shafter (aws@nova.sdsu.edu)

Subjects: Optical, Nova, Transient

Referred to by ATel #: 4196

I report the discovery of apparent nova in M31 on a co-added 1170-s R-band CCD frame taken on June 20.038 UT with the 0.65-m telescope at Ondrejov.

The new object is located at R.A. = 0h42m05s.05, Decl. = +41o15'48".2 (equinox 2000.0), which is 442.8" west and 20.3" 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:

2012 June 6.031 UT, [20.0; 17.054, 18.0 +/- 0.15; 18.052, 18.5 +/- 0.15; 19.053, 18.7 +/- 0.15; 20.038, 19.0 +/- 0.2.

I thank P. Kusnirak for help with getting of the images.

Discovery image