TNS Astronomical Transient Report No. 264600 [ 2025TNSTR3021....1M ]
Date Received (UTC): 2025-08-01 17:10:00
Date made public:
Sender: ALeRCE
Reporting Group: ALeRCE Discovery Data Source: ZTF
A. Munoz-Arancibia, F.E. Bauer, G. Pignata, F. Forster, A. Mourao, S. Jurado, L. Hernandez-Garcia, L. Galbany, J. Silva-Farfan, R. Dastidar, J.P. Brandt, A. Alvarez, F. Andrades, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, P. Huijse, H. Larranaga, C. Mansilla, K. Medina, D. Moreno, E. Munoz, I. Reyes, P. Sanchez-Saez, D. Rodriguez-Mancini, M. Catelan, S. Eyheramendy, M.J. Graham on behalf of the ALeRCE broker report/s the discovery of a new astronomical transient.
IAU Designation: AT 2025sws
Discoverer internal name: ZTF25abfxcsw
Coordinates (J2000): RA = 17:14:19.973 (258.5832191) DEC = +55:09:33.15 (55.159207)
Discovery date: 2025-07-31 05:50:26.002 (JD=2460887.7433565)
Potential host galaxy: SDSS J171419.85+550933.3
Remarks: SN candidate classified using ALeRCE's stamp classifier (Carrasco-Davis et al. 2021) and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF25abfxcsw
Photometry
Discovery (first detection):
Discovery date: 2025-07-31 05:50:26.002
Flux: 20.4743 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin
Remarks: Data provided by ZTF
Last non-detection:
Last non-detection date: 2025-07-31 04:20:42
Limiting flux: 20.4359 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin
Remarks: Data provided by ZTF
Details of the new object can be viewed here: https://www.wis-tns.org/object/2025sws
Date Received (UTC): 2025-08-01 17:10:00
Date made public:
Sender: ALeRCE
Reporting Group: ALeRCE Discovery Data Source: ZTF
A. Munoz-Arancibia, F.E. Bauer, G. Pignata, F. Forster, A. Mourao, S. Jurado, L. Hernandez-Garcia, L. Galbany, J. Silva-Farfan, R. Dastidar, J.P. Brandt, A. Alvarez, F. Andrades, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, P. Huijse, H. Larranaga, C. Mansilla, K. Medina, D. Moreno, E. Munoz, I. Reyes, P. Sanchez-Saez, D. Rodriguez-Mancini, M. Catelan, S. Eyheramendy, M.J. Graham on behalf of the ALeRCE broker report/s the discovery of a new astronomical transient.
IAU Designation: AT 2025sws
Discoverer internal name: ZTF25abfxcsw
Coordinates (J2000): RA = 17:14:19.973 (258.5832191) DEC = +55:09:33.15 (55.159207)
Discovery date: 2025-07-31 05:50:26.002 (JD=2460887.7433565)
Potential host galaxy: SDSS J171419.85+550933.3
Remarks: SN candidate classified using ALeRCE's stamp classifier (Carrasco-Davis et al. 2021) and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF25abfxcsw
Photometry
Discovery (first detection):
Discovery date: 2025-07-31 05:50:26.002
Flux: 20.4743 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin
Remarks: Data provided by ZTF
Last non-detection:
Last non-detection date: 2025-07-31 04:20:42
Limiting flux: 20.4359 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin
Remarks: Data provided by ZTF
Details of the new object can be viewed here: https://www.wis-tns.org/object/2025sws