Аннотация:MASTER OT J235725.15-015215.4 detection - PKS 2354-02 optical flare
MASTER-Tavrida auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L )
discovered OT source at (RA, Dec) = 23h 57m 25.15s -01d 52m 15.4s on 2018-10-09 20:53:08 UT.
The OT unfiltered magnitude is 17.7m (limit 20.2m).
The OT is seen in 25 images.
There is PKS 2354-02 (Veron+ 2010) with V=21.2 and GALEX NUV=21.75
We have reference images without OT on 2014-07-21.89405 UT with 19.6 unfiltered magnitude limit (MASTER-Kislovodsk).
There are
m_OT=19.4 on 2010-12-24 16:06:17.002UT (MASTER-Kislovodsk),
m_OT=17.0 on 2013-11-05 12:33:51.674UT (MASTER-Tunka),
m_OT=19.3 on 2014-07-30 18:38:38.855UT (MASTER-Tunka),
m_OT=19.8 on 2016-09-27 01:24:00.054UT (MASTER-IAC),
m_OT=19.5 on 2018-07-21 22:47:36.506UT (MASTER-SAAO),
m_OT=19.0 on 2018-09-11 03:45:35.794UT (MASTER-IAC).
Spectral observations are required.
The discovery and reference images are available at
http://master.sai.msu.ru/static/OT/235725.15-015215.4.png
List of Optical Transients discovered by MASTER
MASTER Global Robotic Net