TNS Astronomical Transient Report No. 241991 [ 2025TNSTR.288....1Z ]

Date Received (UTC): 2025-01-21 15:14:22
Date made public:
Sender: MASTER
Reporting Group: MASTER     Discovery Data Source: MASTER

K.Zhirkov, V.Lipunov, E.Gorbovskoy, N.Tiurina, P.Balanutsa, , D.Vlasenko, I.Panchenko, A.Kuznetsov, G.Antipov, A.Sankovich, A.Sosnovskij, Yu.Tselik, M.Gulyaev, 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. 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 2025yx
Discoverer internal name: MASTER OT J105330.31+070928.3
Coordinates (J2000): RA = 10:53:30.310 (163.376292) DEC = +07:09:28.30 (7.157861)
Discovery date: 2025-01-21 06:55:16.896 (JD=2460696.78839)


Remarks: QSO outburst, ampl>2m, at 05Dec2024 it was 18.9m unfiltered

Photometry

Discovery (first detection):
Discovery date: 2025-01-21 06:55:16.896
Flux: 19.6 VegaMag
Filter: Other-
Instrument: Other
Telescope: Other

Remarks: MASTER-OAFA

Last non-detection:
Last non-detection date: 2024-12-25 06:54:19
Limiting flux: 20 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/2025yx