TNS Astronomical Transient Report No. 260040 [ 2025TNSTR2392....1M ]

Date Received (UTC): 2025-06-25 16:00:41
Date made public:
Sender: ALeRCE
Reporting Group: ALeRCE     Discovery Data Source: ZTF

A. Munoz-Arancibia, G. Pignata, F.E. Bauer, 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 2025oyh
Discoverer internal name: ZTF25aaxltbu
Coordinates (J2000): RA = 23:16:16.438 (349.06849086856) DEC = -00:58:08.18 (-0.96893872619987)
Discovery date: 2025-06-22 10:21:01.002 (JD=2460848.9312616)

Potential host galaxy: WISEA J231616.47-005808.7

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/ZTF25aaxltbu

Photometry

Discovery (first detection):
Discovery date: 2025-06-22 10:21:01.002
Flux: 20.4855 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2025-06-20 11:01:30
Limiting flux: 20.0569 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/2025oyh