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MASTER: PSN in Lick catalog's galaxy

ATel #9380; N. Tiurina, V. Lipunov (Lomonosov MSU), D. Buckley (SAAO), E. Gorbovskoy, P. Balanutsa, V. Shumkov, V. Kornilov, D. Kuvshinov, T. Pogrosheva, A. Kuznetsov, D. Vlasenko (Lomonosov Moscow State University, SAI), S. Potter, A. Kniazev (South African Astronomical Observatory), N. Budnev, O. Gress, K. Ivanov (API, Irkutsk State University)
on 16 Aug 2016; 16:49 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, Request for Observations, Supernovae, Transient

MASTER OT J042032.78-215212.3 discovery - PSN (17.8) in galaxy with b_mag=16.17

MASTER-SAAO auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 04h 20m 32.78s -21d 52m 12.3s on 2016-08-16.03583 UT.
The OT unfiltered magnitude is 17.8m(limit 17.9m).
The OT is seen in 3 image. There is no minor planet at this place. We have reference image without OT on 2015-10-08.03299 UT with unfiltered magnitude limit 20.2m.

This PSN is in 4.7" from the galaxy of Lick NPM1 Ref. Galaxies (Klemola+ 1987) with b_mag=16.17+-0.25
Spectral observations are required.

The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/042032.78-215212.3.png

List of Optical Transients discovered by MASTER

MASTER Global Robotic Net