GCN Circular 43143
Subject
Fermi GRB 251216A: Global MASTER-Net observations report
Event
Date
2025-12-16T15:15:46Z (14 hours 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-Kislovodsk robotic telescope [1] located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB 251216A ( Fermi GBM team, GCN 43139) errorbox 17500 sec after notice time and 17536 sec after trigger time at 2025-12-16 14:30:26 UT, with upper limit up to 16.4 mag. Observations started at twilight. The observations began at zenith distance = 39 deg. The sun altitude is -9.5 deg.
The galactic latitude b = 16 deg., longitude l = 84 deg.
Real time updated cover map and OT discovered available here:
https://master.sai.msu.ru/site/master2/observ.php?id=3072907
We obtain a following upper limits.
Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________
10659 | 2025-12-16 12:35:18 | MASTER- | (18h 38m 20.71s , +53d 19m 42.3s) | C | 60 | 16.9 |
10659 | 2025-12-16 12:35:18 | MASTER- | (18h 34m 27.90s , +54d 21m 36.1s) | C | 60 | 18.4 |
10732 | 2025-12-16 12:36:31 | MASTER- | (19h 08m 51.53s , +57d 04m 35.2s) | C | 60 | 16.8 |
10732 | 2025-12-16 12:36:31 | MASTER- | (19h 04m 35.12s , +58d 06m 38.4s) | C | 60 | 18.6 |
10803 | 2025-12-16 12:37:43 | MASTER- | (18h 39m 15.37s , +51d 24m 37.8s) | C | 60 | 16.9 |
10804 | 2025-12-16 12:37:43 | MASTER- | (18h 35m 33.19s , +52d 26m 36.2s) | C | 60 | 18.3 |
10876 | 2025-12-16 12:38:55 | MASTER- | (18h 38m 26.95s , +55d 13m 43.2s) | C | 60 | 17.2 |
10876 | 2025-12-16 12:38:55 | MASTER- | (18h 34m 24.25s , +56d 15m 38.2s) | C | 60 | 18.5 |
10948 | 2025-12-16 12:40:07 | MASTER- | (18h 40m 06.35s , +57d 07m 35.6s) | C | 60 | 17.5 |
10948 | 2025-12-16 12:40:07 | MASTER- | (18h 35m 51.37s , +58d 09m 31.1s) | C | 60 | 18.8 |
11020 | 2025-12-16 12:41:19 | MASTER- | (18h 17m 27.03s , +49d 32m 48.1s) | C | 60 | 17.3 |
11020 | 2025-12-16 12:41:19 | MASTER- | (18h 13m 54.31s , +50d 34m 39.8s) | C | 60 | 18.7 |
11090 | 2025-12-16 12:42:29 | MASTER- | (18h 21m 25.26s , +47d 38m 46.3s) | C | 60 | 17.0 |
11090 | 2025-12-16 12:42:29 | MASTER- | (18h 18m 00.39s , +48d 40m 42.0s) | C | 60 | 18.5 |
11162 | 2025-12-16 12:43:41 | MASTER- | (19h 05m 47.90s , +55d 11m 36.3s) | C | 60 | 16.7 |
11162 | 2025-12-16 12:43:41 | MASTER- | (19h 01m 45.00s , +56d 13m 43.0s) | C | 60 | 18.4 |
11236 | 2025-12-16 12:44:55 | MASTER- | (18h 14m 21.88s , +51d 27m 57.8s) | C | 60 | 17.6 |
11236 | 2025-12-16 12:44:56 | MASTER- | (18h 10m 40.69s , +52d 29m 48.2s) | C | 60 | 19.0 |
11308 | 2025-12-16 12:46:07 | MASTER- | (18h 12m 17.10s , +53d 21m 26.9s) | C | 60 | 18.0 |
11379 | 2025-12-16 12:47:18 | MASTER- | (18h 11m 09.66s , +55d 15m 24.9s) | C | 60 | 18.0 |
11592 | 2025-12-16 12:50:51 | MASTER- | (18h 37m 50.00s , +50d 33m 22.3s) | C | 60 | 18.4 |
11592 | 2025-12-16 12:50:51 | MASTER- | (18h 41m 22.81s , +49d 31m 20.8s) | C | 60 | 16.8 |
11662 | 2025-12-16 12:52:02 | MASTER- | (18h 23m 00.92s , +46d 46m 30.2s) | C | 60 | 18.5 |
11662 | 2025-12-16 12:52:02 | MASTER- | (18h 26m 18.41s , +45d 44m 32.4s) | C | 60 | 17.1 |
11734 | 2025-12-16 12:53:13 | MASTER- | (19h 00m 27.50s , +54d 20m 11.0s) | C | 60 | 18.2 |
11734 | 2025-12-16 12:53:13 | MASTER- | (19h 04m 18.96s , +53d 18m 04.3s) | C | 60 | 16.7 |
12313 | 2025-12-16 13:02:52 | MASTER- | (19h 00m 30.09s , +52d 26m 38.2s) | C | 60 | 18.0 |
12313 | 2025-12-16 13:02:52 | MASTER- | (19h 04m 12.17s , +51d 24m 33.7s) | C | 60 | 16.8 |
12386 | 2025-12-16 13:04:05 | MASTER- | (18h 41m 05.95s , +48d 40m 19.4s) | C | 60 | 18.2 |
12386 | 2025-12-16 13:04:05 | MASTER- | (18h 44m 31.00s , +47d 38m 20.4s) | C | 60 | 16.8 |
12462 | 2025-12-16 13:05:21 | MASTER- | (19h 33m 25.72s , +58d 05m 27.0s) | C | 60 | 18.6 |
12462 | 2025-12-16 13:05:21 | MASTER- | (19h 37m 41.47s , +57d 03m 16.7s) | C | 60 | 16.9 |
13173 | 2025-12-16 13:17:12 | MASTER- | (19h 01m 48.72s , +50d 33m 15.2s) | C | 60 | 17.1 |
13173 | 2025-12-16 13:17:12 | MASTER- | (19h 03m 38.43s , +49d 31m 52.6s) | C | 60 | 16.2 |
13244 | 2025-12-16 13:18:23 | MASTER- | (19h 26m 40.81s , +54d 18m 19.9s) | C | 60 | 16.9 |
13244 | 2025-12-16 13:18:23 | MASTER- | (19h 28m 40.23s , +53d 16m 50.2s) | C | 60 | 15.8 |
13448 | 2025-12-16 13:21:47 | MASTER- | (18h 45m 14.40s , +46d 46m 00.1s) | C | 60 | 16.7 |
13448 | 2025-12-16 13:21:47 | MASTER- | (18h 46m 55.96s , +45d 44m 41.8s) | C | 60 | 16.1 |
13660 | 2025-12-16 13:25:19 | MASTER- | (19h 05m 51.95s , +47d 37m 13.2s) | C | 60 | 15.7 |
13660 | 2025-12-16 13:25:19 | MASTER- | (19h 04m 06.22s , +48d 38m 39.8s) | C | 60 | 16.3 |
13876 | 2025-12-16 13:28:55 | MASTER- | (20h 12m 11.03s , +58d 56m 54.9s) | C | 60 | 15.8 |
17567 | 2025-12-16 14:30:26 | MASTER-Kislovodsk | (19h 11m 54.53s , +50d 38m 45.8s) | C | 60 | 12.7 |
17567 | 2025-12-16 14:30:26 | MASTER-Kislovodsk | (19h 05m 06.15s , +50d 59m 03.9s) | C | 60 | 15.6 |
17646 | 2025-12-16 14:31:46 | MASTER-Kislovodsk | (19h 12m 58.52s , +54d 27m 44.3s) | C | 60 | 12.5 |
17646 | 2025-12-16 14:31:46 | MASTER-Kislovodsk | (19h 05m 29.24s , +54d 48m 25.8s) | C | 60 | 15.5 |
17726 | 2025-12-16 14:33:05 | MASTER-Kislovodsk | (19h 41m 23.34s , +52d 34m 21.3s) | C | 60 | 13.1 |
17726 | 2025-12-16 14:33:05 | MASTER-Kislovodsk | (19h 34m 12.59s , +52d 54m 40.2s) | C | 60 | 15.1 |
17806 | 2025-12-16 14:34:25 | MASTER-Kislovodsk | (19h 33m 39.17s , +54d 28m 28.9s) | C | 60 | 12.6 |
17806 | 2025-12-16 14:34:25 | MASTER-Kislovodsk | (19h 26m 10.96s , +54d 49m 21.1s) | C | 60 | 15.7 |
17892 | 2025-12-16 14:35:51 | MASTER-Kislovodsk | (19h 01m 46.32s , +52d 33m 50.3s) | C | 60 | 12.7 |
17892 | 2025-12-16 14:35:51 | MASTER-Kislovodsk | (18h 54m 42.14s , +52d 54m 07.7s) | C | 60 | 15.5 |
17992 | 2025-12-16 14:37:32 | MASTER-Kislovodsk | (19h 40m 34.70s , +48d 46m 44.1s) | C | 60 | 13.3 |
17992 | 2025-12-16 14:37:32 | MASTER-Kislovodsk | (19h 34m 00.53s , +49d 07m 08.5s) | C | 60 | 15.9 |
18072 | 2025-12-16 14:38:52 | MASTER-Kislovodsk | (19h 04m 00.90s , +48d 43m 49.3s) | C | 60 | 13.6 |
18072 | 2025-12-16 14:38:52 | MASTER-Kislovodsk | (18h 57m 32.23s , +49d 04m 10.6s) | C | 60 | 16.2 |
18152 | 2025-12-16 14:40:12 | MASTER-Kislovodsk | (19h 26m 23.52s , +56d 22m 48.8s) | C | 60 | 13.3 |
18152 | 2025-12-16 14:40:12 | MASTER-Kislovodsk | (19h 18m 33.48s , +56d 42m 51.8s) | C | 60 | 16.1 |
18235 | 2025-12-16 14:41:34 | MASTER-Kislovodsk | (19h 49m 49.49s , +50d 41m 24.3s) | C | 60 | 13.6 |
18235 | 2025-12-16 14:41:34 | MASTER-Kislovodsk | (19h 42m 55.13s , +51d 02m 14.9s) | C | 60 | 16.0 |
18315 | 2025-12-16 14:42:54 | MASTER-Kislovodsk | (18h 52m 48.80s , +50d 38m 56.0s) | C | 60 | 13.8 |
18315 | 2025-12-16 14:42:54 | MASTER-Kislovodsk | (18h 46m 05.95s , +50d 59m 17.0s) | C | 60 | 16.4 |
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