TNS Astronomical Transient Report No. 258043 [ 2025TNSTR2157....1P ]

Date Received (UTC): 2025-06-09 06:30:24
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 2025ndb
Discoverer internal name: ZTF25aaugeir
Coordinates (J2000): RA = 13:12:43.563 (198.181512) DEC = +33:54:36.62 (33.910172)
Discovery date: 2025-06-09 05:19:26.000 (JD=2460835.7218287)

Potential host galaxy: SDSS J131243.46+335437.9
Host redshift: 0.078

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/ZTF25aaugeir/ https://alerce.online/object/ZTF25aaugeir https://antares.noirlab.edu/loci/ANT20255fe3vpeb98mn

Photometry

Discovery (first detection):
Discovery date: 2025-06-09 05:19:26.000
Flux: 19.191 ABMag
Filter: g-ZTF
Instrument: ZTF-Cam
Telescope: Palomar 1.2m Oschin

Last non-detection:
Last non-detection date: 2025-06-05 06:38:32
Limiting flux: 20.113 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/2025ndb