MASTER: OT ourbursts detection

ATel #13534; E. Gorbovskoy, T. Pogrosheva, V. Lipunov, V. Kornilov, O. Gress, N. Tyurina, P. Balanutsa, A. Kuznetsov, V. Vladimirov, D. Vlasenko, I. Gorbunov, D. Cheryasov, D. Zimnukhov, V. Senik, A. Chasovnikov, D. Kuvshinov, V. Shumkov, F. Balakin, K. Zhirkov(Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C. Lopez, F. Podesta, C. Francile(Observatorio Astronomico Felix Aguilar OAFA), H. Levato(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE), R. Rebolo, M. Serra(The Instituto de Astrofisica de Canarias), D. Buckley(South African Astronomical Observatory), N. M. Budnev, O. Ershova (Irkutsk State University, API), V. Yurkov, A. Gabovich, Yu. Sergienko(Blagoveschensk Educational State University), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory)
on 29 Feb 2020; 12:00 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Tweet

Spectral observations are required for every OT.

MASTER OT J075305.60-620103.2 discovery - new OT, amplitude >3.5m

MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L )
discovered OT source at (RA, Dec) = 07h 53m 05.60s -62d 01m 03.2s on 2020-02-26.97531 UT.
The OT unfiltered magnitude (0.2B+0.8R by USNO-B1) is 18.5m (mlim=20.2).
The OT is seen in 2 images.
We have reference image on 2015-03-20.85253 UT with unfilt.mlim= 20.9m.
There is no any sources in VIZIER database, it means 22m POSS limit and ampl>3.5m of current outburst.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/075305.60-620103.2.png

MASTER OT J182001.24-560043.8 discovery - new OT , ampl>5.1m

MASTER-SAAO auto-detection system discovered OT source at (RA, Dec) = 18h 20m 01.24s -56d 00m 43.8s on 2020-02-25.07866 UT with m_OT=16.9m (mlim=19.5).
The OT is seen in 2 images.
We have reference image on 2015-04-14.05770 UT with unfilt.mlim= 19.3m.There is no any sources in VIZIER database, it means 22m POSS limit and ampl>5.1m of current outburst.
The discovery and reference images are available at
http://master.sai.msu.ru/static/OT/182001.24-560043.8.png

MASTER OT J172344.94-605023.2 discovery - OT with ampl>6.1m

MASTER-SAAO auto-detection system discovered OT source at (RA, Dec) = 17h 23m 44.94s -60d 50m 23.2s on 2020-02-25.07681 UT with m_OT=15.9m (mlim19.6=).
The OT is seen in 2 images.
We have reference image on 2015-03-16.99711 UT with unfiltered mlim= 19.7m.There is only VISTA source in VIZIER database, it means 22m POSS limit and ampl>6.1m of current outburst.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/172344.94-605023.2.png

MASTER OT J215838.79-461531.1 detection - OT with ampl>4.3m

MASTER-OAFA auto-detection system discovered OT source at (RA, Dec) = 21h 58m 38.79s -46d 15m 31.1s on 2020-02-28.38181 UT with m_OT=17.7m (mlim=18.6).
The OT is seen in 2 inspect images. There is no minor planet at this place.
We have reference image on 2017-06-01.28115 UT with unfiltered mlim=20.1m.
The nearest bright star is in 4.6", but it is the neighbor, so 22m POSS limit in history gives >4.3m of current outburst amplitude.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/215838.79-461531.1.png

MASTER OT J184941.00+850224.5 detection - outburst with ampl>1.9m
MASTER-IAC auto-detection system found OT source at (RA, Dec) = 18h 49m 41.00s +85d 02m 24.5s on 2020-02-19.22214 UT with m_OT=17.1m (mlim=19.0). The OT is seen in 4 images.
We have reference image on 2018-07-16.10079 UT with unfiltered mlim= 19.0m.

MASTER images are available at:
http://master.sai.msu.ru/static/OT/184941.00850224.5.png

Current outburst:
MASTER OT J113727.61-454354.4 = ASASSN-18me (UG)
MASTER-SAAO auto-detection system found OT source at (RA, Dec) = 11h 37m 27.61s -45d 43m 54.4s on 2020-02-26.94519 UT and m_OT=18.3m (mlim=20.0). The OT is seen in 7 images.
We have reference image on 2015-03-25.96537 UT with unfiltered mlim= 21.0m, on 2020-02-16 23:06:54UT m_limit = 20.0
MASTER images are http://master.sai.msu.ru/static/OT/113727.61-454354.4.png

MASTER OT J110014.74+131551.6 = SDSS J110014.72+131552.1 - QSO or UGSU outburst, ampl>6m
MASTER-IAC auto-detection system found OT source at (RA, Dec) = 11h 00m 14.74s +13d 15m 51.6s on 2020-02-27.96428 UT with m_OT=15.7m(unfilt).This OT was classified both as QSO and as UGSU Spectral identification is required.
MASTER images are available at http://master.sai.msu.ru/static/OT/110014.74131551.6.png

MASTER Global Robotic Net