MASTER-SAAO: new Dwarf Nova
ATel #7334; P. Balanutsa, V. Lipunov, E. Gorbovskoy (Lomonosov MSU), D. Buckley (SAAO), S. Antipin, N. Tiurina, V. Kornilov, A. Kuznetsov, V. Chazov, V. Vladimirov, E. Popova, V. Shumkov, S. Shurpakov (Lomonosov Moscow State University, SAI), S. Potter, A. Kniazev, M. Kotze (The South African Astronomical Observatory), O. Gress, K. Ivanov, N. Budnev, S. Yazev, V. Poleshchuk, E. Konstantinov, O. Chuvalaev (Irkutsk State University), A. Tlatov, D. Dormidontov, V. Senik, A. Parkhomenko, (Kislovodsk solar station of the Pulkovo observatory RAS), V. Yurkov, Y. Sergienko, A. Gabovich (Blagoveshchensk Educational University), V. Krushinsky, I. Zalozhnih, A. Popov, A. Bourdanov (Ural Federal University)
on 1 Apr 2015; 15:41 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Request for Observations, Cataclysmic Variable, Transient, Variables
MASTER OT J051955.25-460144.4 discovery - new Dwarf Nova flare
MASTER-SAAO auto-detection system ( Lipunov et al., Advances in Astronomy, MASTER Global Robotic Net, 2010 ) discovered OT source at (RA, Dec) = 05h 19m 55.25s -46d 01m 44.4s on 2015-03-30.80796 UT.
The OT unfiltered magnitude is 18.8m (the limit is 18.9m).
The OT is seen in 7 images. We have reference images without OT on 2014-12-24.95295 UT with 20.3m unfiltered magnitude limit, on 2015-02-19.936 with m_lim=19.8, on 2015-01-12.965 with m_lim=20.0.
There is no minor planet at this place. There is no any source inside 10" in VIZIER database, and also no source in NSVS,CRTS, AAVSO.
Spectral observations are required.
The discovery and reference images of new Dwarf Nova are available at: http://master.sai.msu.ru/static/OT/MASTER051955.25-460144.4.jpg
List of Optical Transients discovered by MASTER
MASTER Global Robotic Net
