Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

CBAT "Transient Object Followup Reports"

PSN J03055989+0432382

PSN J03055989+0432382   2013 12 21.7982*  03 05 59.89 +04 32 38.2  17.2 U    4E   8S            9 0

2013 12 21.798

Discovered by Pavel Balanutsa on MASTER-Kislovodsk survey images (60-sec unfiltered exposures, limit 18.5m). New object is located 4" east and 8" south of the center of galaxy SDSS J030559.63+043246.0 (g=18.88 r=18.35 i=18.08).

2013 12 23.700

This transient was observed on 2013 12 23.700 by Gianluca Masi, Francesca Nocentini and Patrick Schmeer, remotely using the 17"-f/6.8 robotic unit part of the Virtual Telescope Project facility in Ceccano, Italy. 120-seconds exposures, unfiltered, show the source at mag. 17.3 (R mags for the reference stars from UCAC-4). We also performed astrometry, getting the following end figures: 59.92s; 37.5" (J2000.0, mean residuals of 0.2" on both axes).

2013 12 21.798

MASTER-Kislovodsk discovery and reference images: http://master.sai.msu.ru/static/OT/030559.89043238.2.png Host galaxy appears very diffuse on SDSS color image available at http://skyserver.sdss3.org/dr8/en/tools/explore/obj.asp?id=1237667227155038515 It is likely an irregular dwarf galaxy with low surface brightness.

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