MASTER OT J185634.89-645541.6 discovery - young PSN in IC4790
ATel #15568; K. Zhirkov, V. Lipunov (Lomonosov MSU), C. Francile, R. Podesta, F. Podesta (OAFA), D. Buckley (SAAO), N. Tiurina, O. Gress, V. Senik, A. Gabovich, P. Balanutsa, G. Antipov, E. Gorbovskoy, A. Kuznetsov, D. Vlasenko, A. Chasovnikov, V. Topolev, Yu. Tselik, Ya. Kechin, V. Shumkov (Lomonosov MSU), L. Carrasco, J. R. Valdes, V. Chavushyan, V. M. Patino Alvarez, J. Martinez, A. R. Corella, L. H. Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory), N. Budnev (ISU), V. Yurkov (BSPU), A. Tlatov, D. Dormidontov (Kislovodsk Solar station of Pulkovo observatory)
on 23 Aug 2022; 08:13 UT
Credential Certification: Vladimir Lipunov (lipunov2007@gmail.com)
Subjects: Optical, Request for Observations, Supernovae, Transient, Variables
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.
Spectral observations are required.
The discovery and reference images are available at:
http://master.sai.msu.ru/static/OT/185634.89-645541.6.png
MASTER Global Robotic Net
