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PSN detection by MASTER

ATel #4200; V. Shumkov, D. Denisenko, P. Balanutsa, V. Lipunov, E. Gorbovskoy, N. Tiurina, V. Kornilov, A. Belinski, N. Shatskiy, V. Chazov, A. Kuznetsov, D. Zimnukhov, D. Gareeva (Moscow State University, SAI) V. Krushinsky, I. Zalozhnih, A. Popov (Ural State 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) P. Podvorotniy, S. Shurpakov (MASTER team members), H. Levato, C. Saffe (ICATE), C. Mallamaci, C. Lopez and F. Podest (Observatorio Astronomico Felix Aguilar; OAFA)
on 22 Jun 2012; 08:58 UT
Credential Certification: Vladimir Lipunov (lipunov2007@gmail.com)

Subjects: Optical, Supernovae, Transient

MASTER-Kislovodsk auto-detection system discovered OT source at (RA, Dec) = 15h 38m 17.95s +25d 44m 17.3s on 2012-06-20.79932 UT. Typical error is about 0.5 arcsec. The OT unfiltered magnitude is 18.6m (limit 19.8m).

The OT are seen at 2 images. There is no minor planet at this place. There is PGC1748257 galaxy (PSN offset is 9.1E and 36.2S in arcsec from galaxy). There are three SDSS8 faint (rmag > 22) galaxy J153817.95+254417.5, J153817.94+254417.7 and J153817.94+254417.9 inside our error box.
We have reference image without OT on 2010-02-27.06866 UT with unfiltered magnitude limit 19.3m.

Spectral observations are required.

The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/153817.95254417.3_1.png

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