TNS Astronomical Transient Report No. 271223 [ 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 2025ylj
Discoverer internal name: ZTF25abtjqut
Coordinates (J2000): RA = 09:18:43.886 (139.68285863333) DEC = +38:25:43.30 (38.428695166667)
Discovery date: 2025-09-24 12:18:51.002 (JD=2460943.0130903)
Potential host galaxy: SDSS J091843.37+382546.8
Host redshift: 0.07076762
Remarks: Early SN candidate (r-rise > 0.21+-0.03 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/ZTF25abtjqut
Photometry
Discovery (first detection):
Discovery date: 2025-09-24 12:18:51.002
Flux: 19.2248 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin
Remarks: Data provided by ZTF
Last non-detection:
Last non-detection date: 2025-09-20 12:30:27
Limiting flux: 19.7448 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/2025ylj
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 2025ylj
Discoverer internal name: ZTF25abtjqut
Coordinates (J2000): RA = 09:18:43.886 (139.68285863333) DEC = +38:25:43.30 (38.428695166667)
Discovery date: 2025-09-24 12:18:51.002 (JD=2460943.0130903)
Potential host galaxy: SDSS J091843.37+382546.8
Host redshift: 0.07076762
Remarks: Early SN candidate (r-rise > 0.21+-0.03 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/ZTF25abtjqut
Photometry
Discovery (first detection):
Discovery date: 2025-09-24 12:18:51.002
Flux: 19.2248 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin
Remarks: Data provided by ZTF
Last non-detection:
Last non-detection date: 2025-09-20 12:30:27
Limiting flux: 19.7448 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/2025ylj