Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

CBAT "Transient Object Followup Reports"

PSN J07185600+6018330

PSN J07185600+6018330   2012 10 08.0879*  07 18 56.00 +60 18 33.0  15.5 U                       9 0

2012 10 08.0879

P. Podvorotny, D. Denisenko, E. Gorbovskoy, V. Lipunov, P. Balanutsa, N. Tiurina, V. Kornilov, A. Belinski, N. Shatskiy, V. Chazov, A. Kuznetsov, D. Zimnukhov (Moscow State University, SAI), V. Krushinsky, I. Zalozhnih, A. Popov, A. Bourdanov, A. Punanova (Ural Federal University), K. Ivanov, S. Yazev, N. Budnev, E. Konstantinov, O. Chuvalaev, V. Poleshchuk, O. Gress (Irkutsk State University), A. Parkhomenko, A. Tlatov, D. Dormidontov, V. Senik (Kislovodsk solar station of the Pulkovo observatory RAS), V. Yurkov, Y. Sergienko, D. Varda, E. Sinyakov (Blagoveshchensk Educational University), V. Shumkov, S. Shurpakov, (MASTER team members), H. Levato, C. Saffe (ICATE), C. Mallamaci, C. Lopez and F. Podest (Observatorio Astronomico Felix Aguilar; OAFA) report: MASTER-Kislovodsk auto-detection system discovered OT source at (RA, Dec) = 07h 18m 56.78s +60d 18m 33.3s on 2012-10-08.08789 UT. The OT unfiltered magnitude is 15.5m (limit 18.8m). The OT is seen in 2 images. There is no minor planet at this place. We have reference image without OT on 2010-11-07.98868 UT with magnitude limit in 'BLANK' filter 19.7m. There is nothing at this position in USNO-B1.0, GSC 2.3.2, 2MASS, GALEX, 1RXS, GCVS catalogs and in AAVSO VSX. This area is not covered by SDSS and NEAT. Nothing is visible at the position of the OT on 9 available DSS plates and on their combination down to limiting magnitude ~21.5. Color-combined (BRIR) DSS finder chart is uploaded to http://master.sai.msu.ru/static/OT/J071856+601833-BRIR.jpg (10'x10' FOV). We have obtained follow-up images with MASTER-Tunka telescope simultaneously in two filters on 2012 Oct. 08.842 UT. The photometry is as follows: V=15.6, I=15.8. Based on the amplitude of variability (more than 6m) and color (V-I=-0.2) we suggest that MASTER OT J071856.78+601833.3 is likely a new cataclysmic variable (dwarf nova) in outburst. Follow up observations are required. The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/071856.78601833.3.png

2012 10 11.1076

This object was observed by Federica Luppi and Luca Buzzi from Schiaparelli Observatory, Varese, Italy. In a stack of images totalling 2 minutes of unfiltered exposure time, the object has position end figures 56s.89, 33".5 and magnitude 15.9. Image posted at URL:http://www.astrogeo.va.it/pub/TOCP/PSN_J07185600+6018330.jpg

2012 10 10.471

This possible supernova was detected with 6 x 15 min images using a luminance filter Astrometry: RA 07 18 56.91 Dec 60 18 33.4 Photometry: Mag 16.22 +/- 0.05 L These data were collected remotely by Joseph Brimacombe, Cairns, Australia. Link to image and further information http://www.flickr.com/photos/43846774@N02/8079106759/

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