MASTER: new OT, ampl>4m
ATel #12581; T. Pogrosheva, V. Lipunov (Lomonosov MSU), D. Buckley (SAAO), E. Gorbovskoy, N. Tiurina, P. Balanutsa, A. Kuznetsov, V. Kornilov, D. Vlasenko, V. Vladimirov, O. Gress, V. A.Senik (Lomonosov Moscow State University, SAI), R. Rebolo, M. Serra-Ricart (OAC), R. Podesta, F. Podesta, C. Francile (OAFA), H. Levato, C. Lopez (ICATE), V. Yurkov, A. Gabovich (BSPU)
on 15 Mar 2019; 20:31 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Request for Observations, Cataclysmic Variable, Transient, Variables
MASTER OT J122733.60-441427.9 discovery - dwarf nova with ampl.>4mag, no data in VIZIER database
MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L )
discovered OT source at (RA, Dec) = 12h 27m 33.60s -44d 14m 27.9s on 2019-03-15.05047 UT.
The OT unfiltered magnitude is 18.0m (mlim=20.0).
The OT is seen on 8 images in current outburst:
2019-03-15 01:12:41.331/01:41:58.798UT with unfiltered m_OT=18.0
and on 3 images in 2015:
2015-03-28 20:58:13.068/21:20:54.305Ut with m_OT=18.5.
We have reference images on 2019-03-02 22:41:23UT with unfiltered mlim=20.3, on 2015-05-10.86832 UT with unfiltered mlim= 20.9m.
There is no any sources inside 5" in VIZIER database, it means 22m POSS limit and more then 4m of current outburst amplitude
Spectral observations are required.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/122733.60-441427.9.png
MASTER Global Robotic Net
