TNS Astronomical Transient Report No. 273988 [ 2025TNSTR4181....1F ]

Date Received (UTC): 2025-10-19 22:58:22
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 2025aayg
Discoverer internal name: ZTF25abxuocm
Coordinates (J2000): RA = 01:21:03.511 (20.2646281) DEC = -09:15:03.78 (-9.2510507)
Discovery date: 2025-10-19 07:14:16.996 (JD=2460967.8015856)

Potential host galaxy: SDSS J012103.66-091506.1

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/ZTF25abxuocm

Photometry

Discovery (first detection):
Discovery date: 2025-10-19 07:14:16.996
Flux: 20.2939 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2025-10-17 08:32:55
Limiting flux: 19.9641 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/2025aayg