TNS Astronomical Transient Report No. 255455 [ 2025TNSTR1837....1P ]

Date Received (UTC): 2025-05-19 16:49:35
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), 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: SN 2025ktr
Discoverer internal name: ZTF25aaqondx
Coordinates (J2000): RA = 12:10:39.237 (182.663488) DEC = +61:40:47.91 (61.679975)
Discovery date: 2025-05-19 06:52:06.000 (JD=2460814.7861806)

Potential host galaxy: LEDA 2622543
Host redshift: 0.05200421

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/ZTF25aaqondx/ https://alerce.online/object/ZTF25aaqondx https://antares.noirlab.edu/loci/ANT202592svmaakbfjw

Photometry

Discovery (first detection):
Discovery date: 2025-05-19 06:52:06.000
Flux: 18.276 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2025-05-15 06:19:14
Limiting flux: 20.072 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/2025ktr