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THE ASTRONOMER Electronic Circular No 3729      2022 Aug 24 19.03UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074
INTERNET: GUY@TAHQ.DEMON.CO.UK      Backup: gmh@wdcc1.bnsc.rl.ac.uk
WORLD WIDE WEB                         http://www.theastronomer.org
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MASTER OT J185634.89-645541.6; IC 4790

K. Zhirkov et. al. (Lomonosov MSU)reports ATEL 15568
MASTER OT J185634.89-645541.6 discovery - young PSN in IC4790
MASTER-OAFA auto-detection system ( Lipunov et al., "MASTER Global Robotic 
Net", Advances in Astronomy, 2010, 30L )
discovered OT source at

RA, Dec = 18h 56m 34.89s -64d 55m 41.6s

on 2022-08-20.11787 UT. 

The OT unfiltered magnitude is 16.0m(mlim=19.6). 

The OT is seen in 11 images, for ex.:
2022-08-20 02:49:44  16.0
2022-08-21 03:04:48  15.5
2022-08-23 06:16:47  15.0 

We have >1000 reference images since Dec 2014, for ex.:

2022-08-03 01:05:15 with unfiltered mlim=19.5m
2018-06-20.33105 UT with unfiltered mlim=20.1m. 

The discovery and reference images are available at:  

http://master.sai.msu.ru/static/OT/185634.89-645541.6.png

Guy M Hurst

