TNS Astronomical Transient Report No. 266205 [ 2025TNSTR3238....1J ]

Date Received (UTC): 2025-08-17 12:42:44
Date made public:
Sender: ALeRCE
Reporting Group: ALeRCE     Discovery Data Source: ZTF

S. Jurado, F.E. Bauer, F. Forster, G. Pignata, A. Munoz-Arancibia, A. Mourao, L. Hernandez-Garcia, L. Galbany, J. Silva-Farfan, R. Dastidar, J.P. Brandt, A. Alvarez, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, B. Gamboa, P. Huijse, H. Larranaga, C. Mansilla, K. Medina, D. Moreno, E. Munoz, E. Pizarro, 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 2025ues
Discoverer internal name: ZTF25abimgse
Coordinates (J2000): RA = 21:25:45.513 (321.43963794964) DEC = +17:54:52.57 (17.914602373777)
Discovery date: 2025-08-14 04:49:03.996 (JD=2460901.7007407)

Potential host galaxy: SDSS J212545.49+175453.2

Remarks: Early SN candidate (r-rise > 0.06+-0.01 mag/day) 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/ZTF25abimgse

Photometry

Discovery (first detection):
Discovery date: 2025-08-14 04:49:03.996
Flux: 19.9384 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2025-08-11 08:52:06
Limiting flux: 19.4945 ABMag
Filter: r-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/2025ues