TNS Astronomical Transient Report No. 251381 [ 2025TNSTR1342....1M ]

Date Received (UTC): 2025-04-10 17:36:31
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, 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 2025hdm
Discoverer internal name: ZTF25aamkkup
Coordinates (J2000): RA = 16:00:49.284 (240.20535065) DEC = +28:17:11.17 (28.28643715)
Discovery date: 2025-04-08 09:21:02.002 (JD=2460773.8896065)

Potential host galaxy: SDSS J160049.47+281708.4
Host redshift: 0.1164354

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/ZTF25aamkkup

Photometry

Discovery (first detection):
Discovery date: 2025-04-08 09:21:02.002
Flux: 20.1667 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Remarks: Data provided by ZTF

Last non-detection:
Last non-detection date: 2025-04-08 08:25:03
Limiting flux: 19.6662 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://sandbox.wis-tns.org/object/2025hdm