TNS Astronomical Transient Report No. 271226 [ 2025TNSTR3841....1M ]

Date Received (UTC): 2025-09-24 18:41:10
Date made public:
Sender: ALeRCE
Reporting Group: ALeRCE     Discovery Data Source: ZTF

A. Munoz-Arancibia, F.E. Bauer, G. Pignata, F. Forster, A. Mourao, S. Jurado, L. Hernandez-Garcia, L. Galbany, J. Silva-Farfan, R. Dastidar, J.P. Brandt, A. Alvarez, F. Andrades, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, P. Huijse, H. Larranaga, C. Mansilla, K. Medina, D. Moreno, E. Munoz, 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 2025yll
Discoverer internal name: ZTF25abtglvo
Coordinates (J2000): RA = 02:14:16.604 (33.569182) DEC = -20:20:13.27 (-20.3370187)
Discovery date: 2025-09-24 08:58:30.999 (JD=2460942.8739699)

Potential host galaxy: WISEA J021416.67-202010.9

Remarks: Early SN candidate (g-rise > 0.15+-0.06 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/ZTF25abtglvo

Photometry

Discovery (first detection):
Discovery date: 2025-09-24 08:58:30.999
Flux: 19.6983 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2025-09-24 08:17:50
Limiting flux: 19.9736 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/2025yll