TNS Astronomical Transient Report No. 268518 [ 2025TNSTR3430....1M ]
Date Received (UTC): 2025-08-29 20:39:25
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 2025whh
Discoverer internal name: ZTF25abltcbj
Coordinates (J2000): RA = 01:11:05.975 (17.774894229476) DEC = -09:20:11.26 (-9.336461822489)
Discovery date: 2025-08-29 09:54:16.001 (JD=2460916.9126852)
Potential host galaxy: SDSS J011106.12-092011.2
Host redshift: 0.1412886
Remarks: Early SN candidate (r-rise > 0.11+-0.04 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/ZTF25abltcbj
Photometry
Discovery (first detection):
Discovery date: 2025-08-29 09:54:16.001
Flux: 19.8966 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin
Remarks: Data provided by ZTF
Last non-detection:
Last non-detection date: 2025-08-25 10:34:02
Limiting flux: 20.3414 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/2025whh
Date Received (UTC): 2025-08-29 20:39:25
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 2025whh
Discoverer internal name: ZTF25abltcbj
Coordinates (J2000): RA = 01:11:05.975 (17.774894229476) DEC = -09:20:11.26 (-9.336461822489)
Discovery date: 2025-08-29 09:54:16.001 (JD=2460916.9126852)
Potential host galaxy: SDSS J011106.12-092011.2
Host redshift: 0.1412886
Remarks: Early SN candidate (r-rise > 0.11+-0.04 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/ZTF25abltcbj
Photometry
Discovery (first detection):
Discovery date: 2025-08-29 09:54:16.001
Flux: 19.8966 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin
Remarks: Data provided by ZTF
Last non-detection:
Last non-detection date: 2025-08-25 10:34:02
Limiting flux: 20.3414 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/2025whh