TNS Astronomical Transient Report No. 270441 [ 2025TNSTR3741....1S ]
Date Received (UTC): 2025-09-17 10:20:20
Date made public:
Sender: MASTER
Reporting Group: MASTER Discovery Data Source: MASTER
M.Shilova, 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) report/s the discovery of a new astronomical transient.
IAU Designation: AT 2025xui
Discoverer internal name: MASTER OT J031719.64-463647.7
Coordinates (J2000): RA = 03:17:19.640 (49.331833) DEC = -46:36:47.70 (-46.61325)
Discovery date: 2025-09-16 07:05:09.600 (JD=2460934.79525)
Remarks: SN in VISTA galaxy, or AGN flare (galaxy, infrared, and accretion (Xray activity))
Photometry
Discovery (first detection):
Discovery date: 2025-09-16 07:05:09.600
Flux: 20.2 VegaMag
Filter: Other-
Instrument: Other
Telescope: Other
Remarks: MASTER-OAFA
Last non-detection:
Last non-detection date: 2017-12-20 03:34:52
Limiting flux: 21.3 VegaMag
Filter: Other-
Instrument: Other
Telescope: Other
Remarks: MASTER-OAFA
Archival info: Other
Remarks: MASTER
Details of the new object can be viewed here: https://www.wis-tns.org/object/2025xui
Date Received (UTC): 2025-09-17 10:20:20
Date made public:
Sender: MASTER
Reporting Group: MASTER Discovery Data Source: MASTER
M.Shilova, 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) report/s the discovery of a new astronomical transient.
IAU Designation: AT 2025xui
Discoverer internal name: MASTER OT J031719.64-463647.7
Coordinates (J2000): RA = 03:17:19.640 (49.331833) DEC = -46:36:47.70 (-46.61325)
Discovery date: 2025-09-16 07:05:09.600 (JD=2460934.79525)
Remarks: SN in VISTA galaxy, or AGN flare (galaxy, infrared, and accretion (Xray activity))
Photometry
Discovery (first detection):
Discovery date: 2025-09-16 07:05:09.600
Flux: 20.2 VegaMag
Filter: Other-
Instrument: Other
Telescope: Other
Remarks: MASTER-OAFA
Last non-detection:
Last non-detection date: 2017-12-20 03:34:52
Limiting flux: 21.3 VegaMag
Filter: Other-
Instrument: Other
Telescope: Other
Remarks: MASTER-OAFA
Archival info: Other
Remarks: MASTER
Details of the new object can be viewed here: https://www.wis-tns.org/object/2025xui