TNS Astronomical Transient Report No. 303917 [ 2026TNSTR2114....1S ]
Date Received (UTC): 2026-05-15 19:57:19
Date made public:
Sender: MASTER
Reporting Group: MASTER Discovery Data Source: MASTER
A.Sosnovskiy, 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 2026msu
Discoverer internal name: MASTER OT J151044.43+243321.7
Coordinates (J2000): RA = 15:10:44.430 (227.685125) DEC = +24:33:21.70 (24.556028)
Discovery date: 2026-05-15 19:21:20.736 (JD=2461176.30649)
Remarks: GRB 260515 (Svom) optical counterpart
Photometry
Discovery (first detection):
Discovery date: 2026-05-15 19:21:20.736
Flux: 17.5 VegaMag
Filter: Other-
Instrument: Other
Telescope: Other
Remarks: MASTER-Tavrida
Last non-detection:
Last non-detection date: 2024-03-17 22:52:11
Limiting flux: 19 VegaMag
Filter: Other-
Instrument: Other
Telescope: Other
Remarks: MASTER-Tavrida
Archival info: Other
Remarks: MASTER
Details of the new object can be viewed here: https://www.wis-tns.org/object/2026msu
Date Received (UTC): 2026-05-15 19:57:19
Date made public:
Sender: MASTER
Reporting Group: MASTER Discovery Data Source: MASTER
A.Sosnovskiy, 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 2026msu
Discoverer internal name: MASTER OT J151044.43+243321.7
Coordinates (J2000): RA = 15:10:44.430 (227.685125) DEC = +24:33:21.70 (24.556028)
Discovery date: 2026-05-15 19:21:20.736 (JD=2461176.30649)
Remarks: GRB 260515 (Svom) optical counterpart
Photometry
Discovery (first detection):
Discovery date: 2026-05-15 19:21:20.736
Flux: 17.5 VegaMag
Filter: Other-
Instrument: Other
Telescope: Other
Remarks: MASTER-Tavrida
Last non-detection:
Last non-detection date: 2024-03-17 22:52:11
Limiting flux: 19 VegaMag
Filter: Other-
Instrument: Other
Telescope: Other
Remarks: MASTER-Tavrida
Archival info: Other
Remarks: MASTER
Details of the new object can be viewed here: https://www.wis-tns.org/object/2026msu