TNS Astronomical Transient Report No. 269493 [ 2025TNSTR3597....1F ]
Date Received (UTC): 2025-09-07 17:43:26
Date made public:
Sender: ALeRCE
Reporting Group: ALeRCE Discovery Data Source: ZTF
F. Forster, F.E. Bauer, G. Pignata, A. Munoz-Arancibia, 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, E. Pizarro, 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 2025xbh
Discoverer internal name: ZTF18aamyufs
Coordinates (J2000): RA = 15:46:42.665 (236.67776889998) DEC = +43:22:21.13 (43.3725371)
Discovery date: 2025-09-05 05:47:33.996 (JD=2460923.7413657)
Potential host galaxy: LEDA 2219196
Host redshift: 0.03639
Remarks: Early SN candidate (r-rise > 0.45+-0.01 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/ZTF18aamyufs
Photometry
Discovery (first detection):
Discovery date: 2025-09-05 05:47:33.996
Flux: 17.2063 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin
Remarks: Data provided by ZTF
Last non-detection:
Last non-detection date: 2025-09-05 03:20:58
Limiting flux: 19.8102 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/2025xbh
Date Received (UTC): 2025-09-07 17:43:26
Date made public:
Sender: ALeRCE
Reporting Group: ALeRCE Discovery Data Source: ZTF
F. Forster, F.E. Bauer, G. Pignata, A. Munoz-Arancibia, 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, E. Pizarro, 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 2025xbh
Discoverer internal name: ZTF18aamyufs
Coordinates (J2000): RA = 15:46:42.665 (236.67776889998) DEC = +43:22:21.13 (43.3725371)
Discovery date: 2025-09-05 05:47:33.996 (JD=2460923.7413657)
Potential host galaxy: LEDA 2219196
Host redshift: 0.03639
Remarks: Early SN candidate (r-rise > 0.45+-0.01 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/ZTF18aamyufs
Photometry
Discovery (first detection):
Discovery date: 2025-09-05 05:47:33.996
Flux: 17.2063 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin
Remarks: Data provided by ZTF
Last non-detection:
Last non-detection date: 2025-09-05 03:20:58
Limiting flux: 19.8102 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/2025xbh