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Possible Nova in M31 detected by MASTER-IAC

ATel #7834; E. Popova (Lomonosov Moscow State University, SAI), R. Rebolo, M. Serra-Ricart , N. Lodieu, G. Israelian (The Instituto de Astrofisica de Canarias),V. Lipunov, E. Gorbovskoy (Lomonosov MSU), V. Kornilov, P. Balanutsa, N. Tiurina, A. Kuznetsov, V. Chazov, D. Vlasenko, I. Gorbunov (Lomonosov Moscow State University, Sternberg Astronomical Institute), D. Buckley, S. Potter, M. Kotze (South African Astronomical Observatory), O. Gress, N. M.Budnev, K. Ivanov (Applied Physics Institute, Irkutsk State University), A. Tlatov, D. Dormidontov, V. Senik, A. V. Parhomenko (Kislovodsk Solar Station of the Pulkovo Observatory), V. Krushinski, I. Zalozhnykh (Ural Federal University), Yu. Sergienko, A. Gabovich, V. Yurkov (Blagoveschensk Educational State University)
on 24 Jul 2015; 18:07 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, Nova, Transient

Referred to by ATel #: 7921

MASTER-IAC auto-detection system discovered OT source at (RA, Dec) = 00h 40m 11.55s +40d 42m 19.4s on 2015-07-24.16229 UT. The OT unfiltered magnitude is 19.4m (limit 19.8m).

The OT is seen in 2 images. There is no minor planet at this place.

We have reference image without OT on 2015-07-21.12653 UT with unfiltered magnitude limit 20.0m.

The discovery images are available at http://master.sai.msu.ru/static/OT/M31_cnd.png

Spectral observations are required.

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