TNS Astronomical Transient Report No. 273061 [ 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 2025aadl
Discoverer internal name: ZTF25abwnkzm
Coordinates (J2000): RA = 17:05:44.899 (256.4370779) DEC = +28:39:42.62 (28.6618379)
Discovery date: 2025-10-12 02:49:41.998 (JD=2460960.6178472)

Potential host galaxy: SDSS J170544.85+283940.9
Host redshift: 0.060364

Remarks: Early SN candidate (g-rise > 0.08+-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/ZTF25abwnkzm

Photometry

Discovery (first detection):
Discovery date: 2025-10-12 02:49:41.998
Flux: 19.3679 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2025-10-09 03:50:23
Limiting flux: 19.4697 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/2025aadl