TNS Astronomical Transient Report No. 253270 [ 2025TNSTR1612....1P ]

Date Received (UTC): 2025-05-01 09:40:07
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 2025iwz
Discoverer internal name: ZTF25aaopksz
Coordinates (J2000): RA = 12:42:15.710 (190.565458) DEC = -03:08:52.63 (-3.147953)
Discovery date: 2025-04-29 06:03:53.000 (JD=2460794.7526968)

Potential host galaxy: LEDA 1075633
Host redshift: 0.171796

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/ZTF25aaopksz/ https://alerce.online/object/ZTF25aaopksz https://antares.noirlab.edu/loci/ANT20259l8d27sxk9k5 https://fink-portal.org/ZTF25aaopksz

Photometry

Discovery (first detection):
Discovery date: 2025-04-29 06:03:53.000
Flux: 19.97 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2025-04-24 06:06:35
Limiting flux: 20.493 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin


Details of the new object can be viewed here: https://www.wis-tns.org/object/2025iwz