TNS Astronomical Transient Report No. 264670 [ 2025TNSTR3042....1P ]
Date Received (UTC): 2025-08-02 10:27:37
Date made public:
Sender: Ismael Perez-Fournon
Reporting Group: SGLF Discovery Data Source: ZTF
I. Pérez-Fournon (IAC and ULL), B. Armas-Chinea, D. Cano-Morales, I. Correa-Plasencia, A.E. Hernández-Díaz, M. Quintana-Ansaldo E. Lekaroz-Urriza (ULL), F. Poidevin (IAC and ULL), C. Jiménez Ángel (GRANTECAN), R. Shirley (MPE), R. Marques-Chaves (Univ. of Geneva), and S. Geier (GRANTECAN & IAC) on behalf of SGLF report/s the discovery of a new astronomical transient.
IAU Designation: AT 2025syi
Discoverer internal name: ZTF25abgkgkl
Coordinates (J2000): RA = 22:43:52.685 (340.969521) DEC = +33:37:05.58 (33.618217)
Discovery date: 2025-08-02 07:52:01.000 (JD=2460889.8277894)
Potential host galaxy: SDSS J224352.99+333706.9
Host redshift: 0.07909726
Remarks: SN candidate discovered using the public ZTF alerts, the LSST/ZTF brokers, and our SGLF filters. ZTF light curve available at the LSST/ZTF brokers, e.g.: https://alerce.online/object/ZTF25abgkgkl
Photometry
Discovery (first detection):
Discovery date: 2025-08-02 07:52:01.000
Flux: 19.818 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin
Last non-detection:
Last non-detection date: 2025-08-02 07:24:10
Limiting flux: 20.532 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin
Details of the new object can be viewed here: https://www.wis-tns.org/object/2025syi
Date Received (UTC): 2025-08-02 10:27:37
Date made public:
Sender: Ismael Perez-Fournon
Reporting Group: SGLF Discovery Data Source: ZTF
I. Pérez-Fournon (IAC and ULL), B. Armas-Chinea, D. Cano-Morales, I. Correa-Plasencia, A.E. Hernández-Díaz, M. Quintana-Ansaldo E. Lekaroz-Urriza (ULL), F. Poidevin (IAC and ULL), C. Jiménez Ángel (GRANTECAN), R. Shirley (MPE), R. Marques-Chaves (Univ. of Geneva), and S. Geier (GRANTECAN & IAC) on behalf of SGLF report/s the discovery of a new astronomical transient.
IAU Designation: AT 2025syi
Discoverer internal name: ZTF25abgkgkl
Coordinates (J2000): RA = 22:43:52.685 (340.969521) DEC = +33:37:05.58 (33.618217)
Discovery date: 2025-08-02 07:52:01.000 (JD=2460889.8277894)
Potential host galaxy: SDSS J224352.99+333706.9
Host redshift: 0.07909726
Remarks: SN candidate discovered using the public ZTF alerts, the LSST/ZTF brokers, and our SGLF filters. ZTF light curve available at the LSST/ZTF brokers, e.g.: https://alerce.online/object/ZTF25abgkgkl
Photometry
Discovery (first detection):
Discovery date: 2025-08-02 07:52:01.000
Flux: 19.818 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin
Last non-detection:
Last non-detection date: 2025-08-02 07:24:10
Limiting flux: 20.532 ABMag
Filter: r-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin
Details of the new object can be viewed here: https://www.wis-tns.org/object/2025syi