MASTER: optical transients

ATel #13740; Yu. P.Sergienko (Blagoveschensk State Pedagogical University), V. Lipunov, T. Pogrosheva (Lomonosov MSU), R. Podesta, F. Podesta, C. Francile (OAFA), H. Levato (SJNU), D. A. H. Buckley (SAAO), K. Zhirkov, V. Kornilov, O. Gress, E. Gorbovskoy, A. Chasovnikov, N. Tiurina, P. Balanutsa, I. Gorbunov, A. Kuznetsov, V. Vladimirov, D. Vlasenko, F. Balakin, D. Zimnukhov, D. Cheryasov, V. Senik, E. Minkina, V. Grinshpun, V. Shumkov, V. Topolev, A. Pozdnyakov (Lomonosov MSU), N. M. Budnev(ISU, API), A. Gabovich, Yu. Sergienko(BSPU), R. Rebolo, M. Serra-Riscart, (IAC), A. Tlatov, D. Dormidontov(Kislovodsk Solar Station of the Pulkovo Observatory)
on 17 May 2020; 22:15 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

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MASTER OT J170018.97-603815.3 detection - ampl>3.3m

MASTER-OAFA auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L )
discovered OT source at (RA, Dec) = 17h 00m 18.97s -60d 38m 15.3s on 2020-05-17.26181 UT.
The OT unfiltered magnitude is 16.3m(mlim=18.3).
The OT is seen in 4 images. There is no minor planet at this place.
We have reference image on 2020-03-30.00587 UT with unfiltered mlim= 19.6m, it means more then 3.3m of current amplitude.
Spectral observations are required.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/170018.97-603815.3.png

MASTER OT J132134.30-462510.8 detection - ampl>2m

MASTER-OAFA auto-detection system discovered OT source at (RA, Dec) = 13h 21m 34.30s -46d 25m 10.8s on 2020-05-17.09218 UT.
The OT unfiltered magnitude is 18.3m (mlim=19.3).
The OT is seen in 6 images. There is no minor planet at this place.
We have reference image on 2020-03-02 00:29:36 with m_OT~20.3, it means more then 2m of current amplitude value.
Spectral observations are required.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/132134.30-462510.8.png

MASTER Global Robotic Net