MASTER: >6.5m amplitude outburst
ATel #12676; O. Ershova (ISU), V. Lipunov (Lomonosov MSU), R. Rebolo, M. Serra (IAC), E. Gorbovskoy, N. Tiurina, P. Balanutsa, V. Kornilov, D. Zimnukhov, A. Kuznetsov, D. Vlasenko, V. Vladimirov, A. Chasovnikov, F. Balakin, V. Topolev, A. Pozdnyakov, K. Zhirkov, V. Grinshpun (Lomonosov MSU), D. Buckley (SAAO), R. Podesta, F. Podesta, C. Francile (OAFA SJNU), H. Levato (ICATE SJNU), O. Gress, N. Budnev, O. Ershova (ISU), A. Tlatov, D. Dormidontov, V. Senik (Kislovodsk solar station of the Pulkovo observatory RAS), V. Yurkov, Y. Sergienko, A. Gabovich (BSPU), T. Pogrosheva
on 20 Apr 2019; 16:15 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Request for Observations, Cataclysmic Variable, Transient, Variables
MASTER OT J070934.07-315149.09 detection - 6.5mag amplitude outburst
MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net",
Advances in Astronomy, 2010, 30L )
discovered OT source at (RA, Dec) = 07h 09m 34.07s -31d 51m 49.09s on 2019-04-19 21:26:48.755UT during BALROG /Fermi 576241792 inspection(but OT is not connected with GRB) Kunzweiler et al.GCN #24132,2, Lipunov et al. GCN #24135.
The OT unfiltered magnitude is 15.5m .
The OT is seen in 2 inspect images . There is no minor planet at this place.
We have reference image without OT on 2019-01-18 02:07:31 with unfiltered magnitude limit 19.6m.
There is no source in USNO-B1, it means 22m POSS limit and more then 6.5m of current outburst ampl.
Spectral observations are required.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/070934.07-315149.09.png
MASTER OT J065842.09+205341.9 detection - 7mag amplitude outburst
MASTER-IAC auto-detection system discovered OT source at (RA, Dec) = 06h 58m 42.09s +20d 53m 41.9s on 2019-04-14.87322 UT.
The OT unfiltered magnitude is 15.0m (limit 17.9m).
The OT is seen in 8 images. There is no minor planet at this place.
We have reference image without OT on 2019-01-27.01326 UT with unfiltered magnitude limit 20.4m.
There is no source in USNO-B1 (PanSTARRs OT in 3.6), it means 22m POSS limit and more then 7m of current outburst ampl.
Spectral observations are required.
This OT was also detected by ASAS and submitted to VSX
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/065842.09205341.9.png
List of Optical Transients discovered by MASTER
MASTER Global Robotic Net
