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MASTER-IAC: bright PSN in PGC843793

ATel #9842; E. Popova, V. Lipunov (Lomonosov MSU), R. Rebolo, M. Serra-Ricart (IAC), D. Buckley (SAAO), E. Gorbovskoy, N. Tiurina, A. Kuznetsov, M. Kuznetsova, P. Balanutsa, V. Vladimirov, V. Kornilov, V. Chazov, D. Kuvshinov, O. Gress, V. Senik, V. Shumkov, S. Shurpakov, T. Pogrosheva (Lomonosov MSU, SAI)
on 10 Dec 2016; 08:01 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, Request for Observations, Supernovae, Transient, Variables

MASTER OT J133905.0-201718.3 - PSN in 17.5"W,5.1"N of PGC843793

MASTER-IAC auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 13h 39m 05s.0 , -20d 17m 18s.3 on 2016-12-08 06:42:34.403UT
The OT unfiltered magnitude is 16.8 (mlim=18.3)
This OT is seen in 2 images n 08 Dec and on 2 images on 2016-12-10 05:11:40,05:15:22UT.
We have reference image without OT on 2016-08-03 19:24:23 (MASTER-SAAO, the nearest in time) with unfiltered mlim=20.0, on 2016-04-01 23:48:50UT with mlim=19.9 (MASTER-IAC).
This PSN is in 17.5"W,5.1"N of PGC843793 (SBab, Btc=15.6, vgsr=9409km/s ).
Spectral observations are required.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/MASTEROTJ133905.0-201718.3.jpg

List of Optical Transients discovered by MASTER

MASTER Global Robotic Net