TNS Astronomical Transient Report No. 249173 [ 2025TNSTR1068....1M ]

Date Received (UTC): 2025-03-21 16:49:00
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, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, B. Gamboa, 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: SN 2025fco
Discoverer internal name: ZTF25aajsirl
Coordinates (J2000): RA = 21:13:37.027 (318.40428046667) DEC = +10:48:34.98 (10.809717033333)
Discovery date: 2025-03-21 12:30:22.003 (JD=2460756.021088)

Potential host galaxy: 2MASX J21133701+1048345
Host redshift: 0.0763

Remarks: Early SN candidate (r-rise > 2.19+-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/ZTF25aajsirl

Photometry

Discovery (first detection):
Discovery date: 2025-03-21 12:30:22.003
Flux: 17.2886 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2025-03-20 12:44:07
Limiting flux: 19.3918 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/2025fco