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MASTER-SAAO: PSN in MCG +00-22-003 and dwarf nova outburst

ATel #7636; O. Gress, V. Lipunov (Lomonosov MSU), D. Buckley (SAAO), E. Gorbovskoy, P. Balanutsa, S. Antipin, N. Tiurina, V. Kornilov, A. Kuznetsov, V. Chazov, V. Vladimirov (Lomonosov Moscow State University, SAI), S. Potter, A. Kniazev, M. Kotze (The South African Astronomical Observatory), N. Budnev, K. Ivanov, S. Yazev (Irkutsk State University), A. Tlatov, D. Dormidontov, V. Senik (Kislovodsk solar station of the Pulkovo observatory RAS), V. Krushinsky, I. Zalozhnih (Ural Federal University), Yu. Sergienko, V. Yurkov, A. Gabovich (Blagoveschensk State Educational University), V. Shumkov, S. Shurpakov (MASTER-Team)
on 16 Jun 2015; 00:49 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, Request for Observations, Cataclysmic Variable, Supernovae, Transient, Variables

MASTER OT J082039.64-012423.4 discovery - bright PSN in MCG +00-22-003

MASTER-SAAO auto-detection system ( Lipunov et al., Advances in Astronomy, MASTER Global Robotic Net, 2010 ) discovered OT source at (RA, Dec) = 08h 20m 39.64s -01d 24m 23.4s on 2015-06-12.69218 UT.
The PSN unfiltered magnitude is 16.7m (the limit is 18.5m).
There are 3 images with OT. There is no minor planet at this place. We have reference image without OT on 2015-04-29.80895 UT with 18.6 unfiltered magnitude limit.
This OT is a PSN in bright MCG +00-22-003 galaxy (NED: V_hel=4342 , 15.2m, Sa, in a triple).
Spectral observations are required.
The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/082039.64-012423.4.png

MASTER OT J034218.43-194409.5 discovery - dwarf nova in outburst, Ampl>4.5m

MASTER-SAAO auto-detection system discovered OT source at (RA, Dec) = 03h 42m 18.43s -19d 44m 09.5s on 2015-06-12.18363 UT.
The OT unfiltered magnitude is 16.3m (the limit is 18.8m).

The OT is seen in 3 images. There is no minor planet at this place. We have reference image without OT on 2015-01-20.92532 UT with 20.5 unfiltered magnitude limit .
There is USNO-B1 star with B2=21.21, R2=23.33,I=18.53. So we can suggest the dwarf nova outburst with amplitude >4.5m.
Spectral observations are required.
The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/034218.43-194409.5.png

List of Optical Transients discovered by MASTER

MASTER Global Robotic Net