GCN Circular 43454
Subject
EP260119a: Global MASTER-Net observations report
Event
Date
2026-01-19T17:36:27Z (5 days ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
Via
email
V.Lipunov, E.Gorbovskoy, A.Kuznetsov, K.Zhirkov, I.Panchenko, N.Tiurina, P.Balanutsa, V.Topolev, D.Vlasenko,
G.Antipov, A.Sankovich, Yu.Tselik, Ya.Kechin, V.Senik, A.Chasovnikov, K.Labsina, I. Gorbunov (Lomonosov MSU),
O.Gress, N.Budnev (ISU),
C.Francile, F. Podesta, R.Podesta, E. Gonzalez (Observatorio Astronomico Felix Aguilar (OAFA),
A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),
A.Sosnovskij (CrAO),
A. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity),
D.Buckley (SAAO),
R.Rebolo (The Instituto de Astrofisica de Canarias),
L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez,
A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory)
MASTER-Tunka robotic telescope [1] located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the EP260119a ( EP Team et al., GCN 43447) errorbox 32012 sec after notice time and 60248 sec after trigger time at 2026-01-19 16:57:56 UT, with upper limit up to 20.4 mag. The observations began at zenith distance = 26 deg. The sun altitude is -59.1 deg.
The galactic latitude b = 46 deg., longitude l = 143 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=3107348
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
60279 | 2026-01-19 16:57:56 | MASTER-Tunka | (10h 31m 16.45s , +66d 08m 29.3s) | C | 60 | 20.3 |
60279 | 2026-01-19 16:57:56 | MASTER-Tunka | (10h 29m 47.72s , +66d 16m 01.1s) | C | 60 | 20.0 |
60352 | 2026-01-19 16:59:09 | MASTER-Tunka | (10h 31m 09.89s , +66d 07m 36.5s) | C | 60 | 20.4 |
60352 | 2026-01-19 16:59:09 | MASTER-Tunka | (10h 29m 41.26s , +66d 15m 08.6s) | C | 60 | 20.0 |
60427 | 2026-01-19 17:00:24 | MASTER-Tunka | (10h 31m 09.54s , +66d 08m 35.2s) | C | 60 | 20.3 |
60427 | 2026-01-19 17:00:24 | MASTER-Tunka | (10h 29m 40.79s , +66d 16m 07.0s) | C | 60 | 20.0 |
60507 | 2026-01-19 17:01:44 | MASTER-Tunka | (10h 31m 15.00s , +66d 07m 33.2s) | C | 60 | 20.4 |
60507 | 2026-01-19 17:01:44 | MASTER-Tunka | (10h 29m 46.20s , +66d 15m 05.6s) | C | 60 | 19.9 |
60580 | 2026-01-19 17:02:57 | MASTER-Tunka | (10h 31m 07.97s , +66d 06m 32.0s) | C | 60 | 20.4 |
60580 | 2026-01-19 17:02:57 | MASTER-Tunka | (10h 29m 39.21s , +66d 14m 03.9s) | C | 60 | 19.9 |
60653 | 2026-01-19 17:04:11 | MASTER-Tunka | (10h 31m 13.12s , +66d 06m 55.4s) | C | 60 | 20.4 |
60653 | 2026-01-19 17:04:11 | MASTER-Tunka | (10h 29m 44.32s , +66d 14m 27.1s) | C | 60 | 20.0 |
60729 | 2026-01-19 17:05:27 | MASTER-Tunka | (10h 31m 10.06s , +66d 08m 03.1s) | C | 60 | 20.4 |
60729 | 2026-01-19 17:05:27 | MASTER-Tunka | (10h 29m 41.17s , +66d 15m 34.4s) | C | 60 | 20.0 |
60815 | 2026-01-19 17:06:52 | MASTER-Tunka | (10h 31m 09.77s , +66d 06m 47.2s) | C | 60 | 20.3 |
60815 | 2026-01-19 17:06:52 | MASTER-Tunka | (10h 29m 40.81s , +66d 14m 18.8s) | C | 60 | 19.9 |
60887 | 2026-01-19 17:08:05 | MASTER-Tunka | (10h 31m 13.15s , +66d 08m 15.5s) | C | 60 | 20.4 |
60887 | 2026-01-19 17:08:05 | MASTER-Tunka | (10h 29m 44.02s , +66d 15m 47.0s) | C | 60 | 20.0 |
60961 | 2026-01-19 17:09:18 | MASTER-Tunka | (10h 31m 05.28s , +66d 07m 24.6s) | C | 60 | 20.4 |
60961 | 2026-01-19 17:09:18 | MASTER-Tunka | (10h 29m 36.21s , +66d 14m 55.7s) | C | 60 | 20.0 |
61036 | 2026-01-19 17:10:34 | MASTER-Tunka | (10h 31m 05.02s , +66d 08m 23.0s) | C | 60 | 20.4 |
61036 | 2026-01-19 17:10:34 | MASTER-Tunka | (10h 29m 35.82s , +66d 15m 54.2s) | C | 60 | 20.0 |
61111 | 2026-01-19 17:11:48 | MASTER-Tunka | (10h 31m 11.19s , +66d 07m 21.5s) | C | 60 | 20.4 |
61111 | 2026-01-19 17:11:49 | MASTER-Tunka | (10h 29m 41.99s , +66d 14m 52.8s) | C | 60 | 19.9 |
61186 | 2026-01-19 17:13:04 | MASTER-Tunka | (10h 31m 05.60s , +66d 06m 19.1s) | C | 60 | 20.4 |
61186 | 2026-01-19 17:13:04 | MASTER-Tunka | (10h 29m 36.47s , +66d 13m 50.5s) | C | 60 | 20.0 |
61262 | 2026-01-19 17:14:19 | MASTER-Tunka | (10h 31m 09.69s , +66d 06m 22.9s) | C | 60 | 20.4 |
61262 | 2026-01-19 17:14:19 | MASTER-Tunka | (10h 29m 40.43s , +66d 13m 54.9s) | C | 60 | 20.0 |
61335 | 2026-01-19 17:15:33 | MASTER-Tunka | (10h 31m 06.90s , +66d 07m 57.6s) | C | 60 | 20.4 |
61335 | 2026-01-19 17:15:33 | MASTER-Tunka | (10h 29m 37.54s , +66d 15m 48.4s) | C | 60 | 19.7 |
61409 | 2026-01-19 17:16:47 | MASTER-Tunka | (10h 31m 06.53s , +66d 06m 43.7s) | C | 60 | 20.3 |
61409 | 2026-01-19 17:16:47 | MASTER-Tunka | (10h 29m 37.16s , +66d 14m 35.6s) | C | 60 | 19.9 |
61483 | 2026-01-19 17:18:00 | MASTER-Tunka | (10h 31m 08.49s , +66d 07m 46.8s) | C | 60 | 20.3 |
61483 | 2026-01-19 17:18:00 | MASTER-Tunka | (10h 29m 38.92s , +66d 15m 38.1s) | C | 60 | 20.0 |
61558 | 2026-01-19 17:19:15 | MASTER-Tunka | (10h 31m 03.24s , +66d 07m 11.2s) | C | 60 | 20.4 |
61558 | 2026-01-19 17:19:16 | MASTER-Tunka | (10h 29m 33.66s , +66d 15m 02.3s) | C | 60 | 20.0 |
61631 | 2026-01-19 17:20:28 | MASTER-Tunka | (10h 31m 03.39s , +66d 08m 09.2s) | C | 60 | 20.4 |
61631 | 2026-01-19 17:20:28 | MASTER-Tunka | (10h 29m 33.60s , +66d 16m 00.6s) | C | 60 | 19.9 |
61703 | 2026-01-19 17:21:41 | MASTER-Tunka | (10h 29m 38.69s , +66d 14m 59.2s) | C | 60 | 20.0 |
61703 | 2026-01-19 17:21:41 | MASTER-Tunka | (10h 31m 08.49s , +66d 07m 07.4s) | C | 60 | 20.4 |
61777 | 2026-01-19 17:22:55 | MASTER-Tunka | (10h 31m 01.86s , +66d 06m 05.4s) | C | 60 | 20.4 |
61777 | 2026-01-19 17:22:55 | MASTER-Tunka | (10h 29m 32.07s , +66d 13m 57.0s) | C | 60 | 19.9 |
61852 | 2026-01-19 17:24:09 | MASTER-Tunka | (10h 31m 08.12s , +66d 06m 25.5s) | C | 60 | 20.3 |
61852 | 2026-01-19 17:24:09 | MASTER-Tunka | (10h 29m 38.21s , +66d 14m 17.5s) | C | 60 | 19.9 |
61925 | 2026-01-19 17:25:23 | MASTER-Tunka | (10h 31m 04.08s , +66d 07m 59.9s) | C | 60 | 20.4 |
61926 | 2026-01-19 17:25:23 | MASTER-Tunka | (10h 29m 34.06s , +66d 15m 51.6s) | C | 60 | 19.9 |
61999 | 2026-01-19 17:26:36 | MASTER-Tunka | (10h 31m 03.79s , +66d 06m 09.1s) | C | 60 | 20.4 |
61999 | 2026-01-19 17:26:36 | MASTER-Tunka | (10h 29m 33.75s , +66d 14m 01.0s) | C | 60 | 19.9 |
62072 | 2026-01-19 17:27:49 | MASTER-Tunka | (10h 31m 06.81s , +66d 07m 44.6s) | C | 60 | 20.4 |
62072 | 2026-01-19 17:27:49 | MASTER-Tunka | (10h 29m 36.65s , +66d 15m 36.3s) | C | 60 | 20.0 |
62145 | 2026-01-19 17:29:03 | MASTER-Tunka | (10h 30m 59.37s , +66d 06m 57.6s) | C | 60 | 20.4 |
62145 | 2026-01-19 17:29:03 | MASTER-Tunka | (10h 29m 29.23s , +66d 14m 49.2s) | C | 60 | 20.0 |
62225 | 2026-01-19 17:30:23 | MASTER-Tunka | (10h 31m 00.13s , +66d 07m 55.9s) | C | 60 | 20.4 |
62225 | 2026-01-19 17:30:23 | MASTER-Tunka | (10h 29m 29.89s , +66d 15m 47.5s) | C | 60 | 19.9 |
62299 | 2026-01-19 17:31:37 | MASTER-Tunka | (10h 31m 06.28s , +66d 06m 54.1s) | C | 60 | 20.4 |
62299 | 2026-01-19 17:31:37 | MASTER-Tunka | (10h 29m 36.01s , +66d 14m 45.6s) | C | 60 | 20.0 |
Filter C is a clear (unfiltred) band.
The observation and reduction will continue.
The message may be cited.
[1] - V.M. Lipunov, V.G. Kornilov, E.S. Gorbovskoy, N.A. Tiurina & A.S.Kuznetsov, 2023, Astronomical Robotic Networks and Operative Multichanel Astrophysics, Lomonosov MSU PRESS, 591pp.
http : // www.pereplet.ru/lipunov/625.html