TNS Astronomical Transient Report No. 240796 [ 2025TNSTR.103....1M ]

Date Received (UTC): 2025-01-08 16:54:03
Date made public:
Sender: ALeRCE
Reporting Group: ALeRCE     Discovery Data Source: ZTF

A. Munoz-Arancibia, F.E. Bauer, G. Pignata, F. Forster, 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, 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 2025gi
Discoverer internal name: ZTF25aabjeiy
Coordinates (J2000): RA = 11:40:03.399 (175.01416439997) DEC = +32:19:04.85 (32.31801265)
Discovery date: 2025-01-05 10:13:33.001 (JD=2460680.9260764)

Potential host galaxy: SDSS J114003.33+321904.8
Host redshift: 0.133251

Remarks: Early SN candidate (g-rise > 0.33+-0.09 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/ZTF25aabjeiy

Photometry

Discovery (first detection):
Discovery date: 2025-01-05 10:13:33.001
Flux: 19.8169 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2025-01-05 09:22:58
Limiting flux: 19.1729 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/2025gi