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Blue MASTER OT J020844.29+481923.0 Detection

ATel #6910; V. Vladimirov, A. Zubareva, V. Lipunov, E. Gorbovskoy, N. Tiurina, P. Balanutsa, A. Kuznetsov, M. Pruzhinskaya, D. Denisenko, Rufanov, V. , (Moscow State University, SAI), K. Ivanov, S. Yazev, N. Budnev, ; O. Gress, V. Poleshchuk, E. Konstantinov (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, V. Gabovich (Blagoveshchensk Educational University), V. Krushinsky, I. Zalozhnih, A. Popov, A. Bourdanov (Ural Federal University), D. Buckley, S. Potter, A. Kniazev, M. Kotze (SAAO), V. Shumkov, S. Shurpakov (MASTER team members)
on 13 Jan 2015; 16:39 UT
Credential Certification: Vladimir Lipunov (lipunov2007@gmail.com)

Subjects: Optical, Cataclysmic Variable, Transient, Variables

Referred to by ATel #: 6926

MASTER OT J020844.29+481923.0 - CV?

MASTER-Tunka auto-detection system (Lipunov et al., 2010, Advances in Astronomy, vol. 2010, pp. 1, http://adsabs.harvard.edu/abs/2010AdAst2010E..30L ) discovered OT source at (RA, Dec) = 02h 08m 44.29s +48d 19m 23.0s on 2015-01-08.52068 UT. The OT unfiltered magnitude is 17.4m (limit 19.1m).

The OT is seen in 9 images.

We have reference image without OT on 2010-08-23.66538 UT with 18.3m unfiltered magnitude limit.

There is 2MASS galaxy at 020842.94 +481949.1 with 30 arcsec offset. But, OT is very far from this E-type galaxy.

The Color-combined DSS finder chart is uploaded to http://master.sai.msu.ru/static/OT/J020844+481922-BRIR5x5.jpg (2xzoom).

We have follow up V, R and unfiltered photometry starting at 2015-01-13 12:52:56 UT up to 2015-01-13 13:22:44UT . We did not find OT in R filter brighter than 17.7 . The unfiltered magnitude didn't changed more than 0.1 mag. The V magnitude is about 17.8.

The discovery and reference images are available at http://master.sai.msu.ru/static/OT/MASTERJ020844.29+481923.0.jpg

Follow up observations are required.

List of Optical Transients discovered by MASTER

Global MASTER Net