MASTER-SAAO: new OT with ampl>5.4m

ATel #13568; T. Pogrosheva, V. Lipunov (Lomonosov MSU), D. Buckley (SAAO), V. Kornilov, O. Gress, E. Gorbovskoy, P. Balanutsa, V. Vladimirov, N. Tyurina, A. Kuznetsov, D. Vlasenko, I. Gorbunov, D. Cheryasov, D. Zimnukhov, V. Senik, A. Chasovnikov, D. Kuvshinov, F. Balakin, K. Zhirkov, V. Shumkov(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), N. M. Budnev (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 19 Mar 2020; 17:02 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Tweet

MASTER OT J173010.69-743822.1 discovery - new OT with ampl>5.4m (no VIZIER, AAVSO data)

MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) )
discovered OT source at (RA, Dec) = 17h 30m 10.69s -74d 38m 22.1s on 2020-03-18.91581 UT.
The OT unfiltered magnitude is 16.6m (mlim=19.8).
The OT is seen in 2 images. There is no minor planet at this place.
We have reference images on:
nearest in time 2020-02-17 02:20:17 with mlim=20.0
on 2017-07-27.85394 UT with unfiltered mlim= 20.3m.
There is no any sources in VIZIER database, it means 22m POSS limit and more then 5.4m of current outburst amplitude.
Spectral observations are required.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/173010.69-743822.1.png

MASTER Global Robotic Net