Central Bureau for Astronomical Telegrams
CBAT "Transient Object Followup Reports"
PSN J01514770+2116206
PSN J01514770+2116206 2012 10 23.9078* 01 51 47.70 +21 16 20.6 16.9 U 32E 7N P1646513 9 0
2012 10 23.908
V. Lipunov (SAI MSU) reports the discovery by P. Balanutsa of a possible supernova (magnitude 16.9) on two unfiltered survey images (180-sec exposures) taken by MASTER-Kislovodsk robotic telescope (0.40-m f/2.5 + 4Kx4K CCD) on 2012 Oct. 23.890 and 23.908 UT. The new object is located at the following coordinates (2000.0): R.A. = 01h51m47s.70, Decl. = +21d16'20".6, which is 31.5" east and 6.9" north of the core of the possible host galaxy PGC 1646513 = 2MASX J01514544+2116137, as well as 7.0" east and 15.7" north from another nearby galaxy SDSS J015147.20+211604.9. D. Denisenko and E. Gorbovskoy (SAI MSU) report that the object was already seen on 3 MASTER-Kislovodsk images of 2012 Oct. 22 (magnitude 17.1-16.8) and on 1 image of Oct. 24.769 UT. It is marginally present on MASTER-Amur images of 2012 Oct. 17, but was under the detection limit (18.5m) on 2012 Oct. 05.540 UT. The discovery and reference images are available at this URL: http://master.sai.msu.ru/static/OT/015147.70211620.6.png with more details given in ATel #4521, http://www.astronomerstelegram.org/?read=4521
2012 11 04.877
D. Denisenko, E. Gorbovskoy, V. Lipunov (SAI MSU) report: this possible supernova is still present on MASTER-Kislovodsk images taken on 2012 Nov. 04.877 UT (unfiltered magnitude 17.4). Comparison of MASTER follow-up and SDSS images is posted at http://master.sai.msu.ru/static/OT/PSNJ01514770+2116206-MASTER-SDSS.jpg Spectroscopic classification is needed.
2012 11 07.1999
PSN detected at coordinates 01 51 47.73 +21 16 21.0 (UCAC3). Magnitude 18.0 +/- 0.2 . Limiting magnitude 19.9 . Sum of 11 x 240-sec images. Nothing visible at these coordinates on DSS. Observer: R. A. Koff, Antelope Hills Observatory, Bennett, Colorado USA (H09) . Image posted at: http://antelopehillsobservatory.org/SNpictures/PSNJ01514770+2116206final.jpg
