MASTER: new OT, ampl >5m
ATel #12523; P. Balanutsa, V. Lipunov (Lomonosov MSU), D. Buckley (SAAO), V. Kornilov, E. Gorbovskoy, V. Vladimirov, D. Zimnukhov, N. Tiurina, A. Kuznetsov, P. Podvorotny, V. Senik, A. Chasovnikov, V. Topalov (Lomonosov MSU), A. Kiazev (SAAO) O. Gress, N. Budnev (ISU), A. Gabovich, V. Yurkov (Blagoveshchensk SPU)
on 21 Feb 2019; 19:50 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)
Subjects: Optical, Request for Observations, Cataclysmic Variable, Transient, Variables
MASTER OT J144402.57-840648.2 discovery - poss. dwarf nova outburst with ampl>5m
MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L )
discovered OT source at (RA, Dec) = 14h 44m 02.57s -84d 06m 48.2s on 2019-02-19.06146 UT.
The OT unfiltered magnitude is 17.0m (mlim=18.0).
The OT is seen in 8 images (2019-02-19 01:28:30.675-02:31:33.374UT). There is no minor planet at this place.
We have reference image on 2016-12-07.99971 UT with unfiltered mlim= 21.0m.
There is no any sources i VIZIER database, it means 22m POSS limit and more then 5mag of current outburst amplitude.
Spectral observations are required.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/MASTEROTJ144402.57-840648.2.jpg
List of Optical Transients discovered by MASTER
MASTER Global Robotic Net
