MASTER-SAAO: bright PSN in PGC600519 and 2 OTs

ATel #9608; T. Pogrosheva, P. Balanutsa, V. Lipunov (Lomonosov MSU), D. Buckley (SAAO), E. Gorbovskoy, N. Tiurina, O. Gress, V. Shumkov, A. Kuznetsov, V. Kornilov, V. Chazov, V. Vladimirov, D. Vlasenko (Lomonosov MSU), S. Potter (SAAO)
on 9 Oct 2016; 22:29 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

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MASTER OT J105440.86-391319.0 - PSN in PGC600519 (2.9"E,7"N)

MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 10h 54m 40.86s , -39d 13m 19s.0 on 2016-10-08 02:56:46.019UT with m_OT=16.5.
This PSN is in 2.9"E,7"N from the center of PGC600519 and is seen on 8 images.
We have reference image without OT on 2015-02-27 22:35:30UT with m_lim=19.8
Spectral observations are required
The discovery and reference images are http://master.sai.msu.ru/static/OT/MASTEROTJ105440.86-391319.0.jpg

MASTER OT J160918.30-333456.7 discovery - bright possible dwarf nova outburst, ampl>5.4m

MASTER-SAAO auto-detection system discovered OT source at (RA, Dec) = 16h 09m 18.30s -33d 34m 56.7s on 2016-09-21.72860 UT.
The OT unfiltered magnitude is 16.6m (mlim=18.6m).
The OT is seen in 4 images. There is no minor planet at this place.
We have reference image without OT on 2016-04-04.98706 UT with unfiltered magnitude limit 19.7m.
There is only GSC2.3.2 known star with known only blue jmag=18.11(1975year - previous outburst)
The 22m POSS limit gives the amplitude of current outburst >5.4m
Spectral observations are required.
The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/160918.30-333456.7.png

MASTER OT J155546.00-734455.8 discovery - OT with ampl>4.6m, no VIZIER data
MASTER-SAAO auto-detection system discovered OT source at (RA, Dec) = 15h 55m 46.00s -73d 44m 55.8s on 2016-09-19.83295 UT.
The OT unfiltered magnitude is 17.4m (limit 18.5m).
The OT is seen in 4 images. There is no minor planet at this place.
We have reference image without OT on 2016-03-09.84253 UT with unfiltered magnitude limit 20.8m.There is no any sources in VIZIER database inside.
Spectral observations are required. The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/155546.00-734455.8.png

MASTER Global Robotic Net