TNS Astronomical Transient Report No. 256132 [ 2025TNSTR1910....1M ]
Date Received (UTC): 2025-05-23 18:24:40
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 2025llk
Discoverer internal name: ZTF25aarkvuy
Coordinates (J2000): RA = 16:08:41.090 (242.1712076) DEC = +31:03:41.64 (31.0615662)
Discovery date: 2025-05-23 08:19:42.001 (JD=2460818.8470139)
Potential host galaxy: SDSS J160841.11+310343.2
Host redshift: 0.05852788
Remarks: Early SN candidate (g-rise > 0.25+-0.08 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/ZTF25aarkvuy
Photometry
Discovery (first detection):
Discovery date: 2025-05-23 08:19:42.001
Flux: 20.184 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin
Remarks: Data provided by ZTF
Last non-detection:
Last non-detection date: 2025-05-21 09:27:43
Limiting flux: 20.6496 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/2025llk
Date Received (UTC): 2025-05-23 18:24:40
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 2025llk
Discoverer internal name: ZTF25aarkvuy
Coordinates (J2000): RA = 16:08:41.090 (242.1712076) DEC = +31:03:41.64 (31.0615662)
Discovery date: 2025-05-23 08:19:42.001 (JD=2460818.8470139)
Potential host galaxy: SDSS J160841.11+310343.2
Host redshift: 0.05852788
Remarks: Early SN candidate (g-rise > 0.25+-0.08 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/ZTF25aarkvuy
Photometry
Discovery (first detection):
Discovery date: 2025-05-23 08:19:42.001
Flux: 20.184 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin
Remarks: Data provided by ZTF
Last non-detection:
Last non-detection date: 2025-05-21 09:27:43
Limiting flux: 20.6496 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/2025llk