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Discovery of a Possible Supernova in Anonymous Galaxy

ATel #4747; K. Hornoch (Astronomical Institute, Ondrejov, Czech Republic), P. Zasche and M. Wolf (Astronomical Institute, Charles U., Prague, Czech Republic)
on 19 Jan 2013; 02:38 UT
Credential Certification: Allen W. Shafter (aws@nova.sdsu.edu)

Subjects: Optical, Supernovae, Transient

We report the discovery of a possible supernova in anonymous galaxy on a co-added 600-s R-band CCD frame taken on 2013 Jan. 17.368 UT with the Danish 1.54-m telescope at La Silla.

The new object designated PSN J13371970-2953486 is located at R.A. = 13h37m19s.70, Decl. = -29o53'48".6 (equinox 2000.0), which is 2.0" east and 1.3" south of the center of anonymous galaxy (see link to finding chart below). We note, that the object is located only ~1" away from position of cataloged X-ray source CXO J133719.8-295348 = NGC 5236-X1. However, possible connection between current optical transient and the X-ray source is unclear.

The following R-band magnitudes (except otherwise noted) were obtained using the Danish 1.54-m telescope at La Silla:

2012 Jun. 1.138 UT, [22.8; 2013 Jan. 12.374, [22.5; 17.368, 21.9 +/- 0.25; 18.360, 21.6 +/- 0.2; 18.380, I = 21.6 +/- 0.3.

Spectroscopic follow-up is strongly encouraged.

Finding chart