TNS Astronomical Transient Report No. 273057 [ 2025TNSTR4078....1F ]

Date Received (UTC): 2025-10-12 14:38:06
Date made public:
Sender: ALeRCE
Reporting Group: ALeRCE     Discovery Data Source: ZTF

F. Forster, F.E. Bauer, 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 2025aadi
Discoverer internal name: ZTF25abwodnn
Coordinates (J2000): RA = 21:21:47.866 (320.44944355895) DEC = +15:25:52.43 (15.43122998417)
Discovery date: 2025-10-12 04:05:51.003 (JD=2460960.6707292)

Potential host galaxy: WISEA J212147.91+152550.9

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/ZTF25abwodnn

Photometry

Discovery (first detection):
Discovery date: 2025-10-12 04:05:51.003
Flux: 20.0246 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2025-10-08 04:34:36
Limiting flux: 19.6698 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/2025aadi