TNS Astronomical Transient Report No. 243351 [ 2025TNSTR.464....1P ]

Date Received (UTC): 2025-02-03 14:16:15
Date made public:
Sender: Ismael Perez-Fournon
Reporting Group: SGLF     Discovery Data Source: ZTF

I. Pérez-Fournon (IAC and ULL), D. Cano-Morales, I. Correa-Plasencia, A.E. Hernández-Díaz, C. Jaén-Martín (ULL), F. Poidevin (IAC and ULL), E. Hatziminaoglou (ESO and IAC), C. Jiménez Ángel (GRANTECAN), Z. Delgado-González (ULL), 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 2025atz
Discoverer internal name: ZTF25aadnucz
Coordinates (J2000): RA = 09:55:44.015 (148.933396) DEC = +03:05:36.53 (3.093481)
Discovery date: 2025-02-01 06:48:18.000 (JD=2460707.7835417)

Potential host galaxy: SDSS J095543.99+030537.4
Host redshift: 0.1076757

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://lasair-ztf.lsst.ac.uk/objects/ZTF25aadnucz/ https://alerce.online/object/ZTF25aadnucz https://antares.noirlab.edu/loci/ANT2025xtimdw2wke5q https://fink-portal.org/ZTF25aadnucz

Photometry

Discovery (first detection):
Discovery date: 2025-02-01 06:48:18.000
Flux: 20.761 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2025-01-30 08:34:23
Limiting flux: 20.267 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/2025atz