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MASTER: bright PSN in PGC054434

ATel #9757; O. Gress, V. Lipunov (Lomonosov MSU), A. Tlatov (KSSMPO), A. Tatarnikov, N. Tiurina, A. Kuznetsov, P. Balanutsa, E. Gorbovskoy, V. Vladimirov, D. Kuvshinov, V. Chazov (Lomonosov MSU, SAI), V. Senik, D. Dormidontov, A. Parkhomenko (Kislovodsk Solar Station of Main Pulkovo Observatory)
on 13 Nov 2016; 18:44 UT
Credential Certification: Nataly Tyurina (tiurina@sai.msu.ru)

Subjects: Optical, Request for Observations, Supernovae, Transient

MASTER OT J151507.52+430900.5 discovery - 15.6mag PSN in 21"E,1.4"S of PGC054434

MASTER-Kislovodsk auto-detection system ( Lipunov et al., "MASTER Global Robotic Net", Advances in Astronomy, 2010, 30L ) discovered OT source at (RA, Dec) = 15h 15m 07.52s +43d 09m 00.5s on 2016-11-10.65848 UT.
The OT unfiltered magnitude is 15.6m (mlim=18.1m).
The OT is seen in 2 images. There is no minor planet at this place. We have reference image without OT on 2013-01-17.06491 UT with unfiltered magnitude limit 19.4m. This bright PSN is in 21"E,1.4"S of PGC054434 (Btot=15.2+-0.3)
Spectral observations are required.
The discovery and reference images are available at http://master.sai.msu.ru/static/OT/MASTEROTJ151507.52+430900.5.jpg

List of Optical Transients discovered by MASTER

MASTER Global Robotic Net