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MASTER: bright PSN discovered in Argentina

ATel #9691; V. Shumkov, V. Lipunov (Lomonosov MSU), R. Podesta (OAFA), H. Levato (ICATE), D. Buckley (SAAO), E. Gorbovskoy, N. Tiurina, P. Balanutsa, A. Kuznetsov, V. Vladimirov, O. Gress, K. Ivanov, V. Chazov (Lomonosov Moscow State University, SAI), C. Lopez, F. Podesta (OAFA), C. Saffe (ICATE), T. Pogrosheva, S. Shurpakov
on 31 Oct 2016; 05:11 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, Request for Observations, Supernovae, Transient

MASTER OT J220101.36-401526.7 discovery - bright PSN in PGC163625

MASTER-OAFA (located in Argentina) auto-detection system ( Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L ) discovered OT source at (RA, Dec) = 22h 01m 01.36s -40d 15m 26.7s on 2016-10-31.08091 UT.
The OT unfiltered magnitude is 16.9m (mlim=19.9m).
The OT is seen in 3 images. There is no minor planet at this place.
We have reference image without OT on 2016-08-29 22:22:17UT with mlim=20.6 in MASTER-SAAO database, on 2016-09-22 20:59:35UT with mlim=20.4.
This PSN is in 54.2" from bright PGC163625 with Btot=16.3, LogD25=0.76(in 0.1arcmin) . The second possib. scenario is new CV with ampl>5.1mag (no known VIZIER sources)
Spectral observations are required.
The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/220101.36-401526.7.png

List of Optical Transients discovered by MASTER

MASTER Global Robotic Net