TNS Astronomical Transient Report No. 260562 [ 2025TNSTR2484....1F ]

Date Received (UTC): 2025-06-30 02:33:54
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 2025pis
Discoverer internal name: ZTF25aayeknl
Coordinates (J2000): RA = 13:56:54.736 (209.2280681) DEC = +20:22:16.55 (20.3712627)
Discovery date: 2025-06-28 07:48:37.999 (JD=2460854.8254398)

Potential host galaxy: SDSS J135654.38+202210.3

Remarks: Early SN candidate (r-rise > 0.65+-0.05 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/ZTF25aayeknl

Photometry

Discovery (first detection):
Discovery date: 2025-06-28 07:48:37.999
Flux: 18.706 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2025-06-28 06:41:12
Limiting flux: 20.4093 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/2025pis