TNS Astronomical Transient Report No. 308296 [ 2026TNSTR2495....1P ]

Date Received (UTC): 2026-06-13 11:24:12
Date made public:
Sender: Ismael Perez-Fournon
Reporting Group: SGLF     Discovery Data Source: Rubin

I. Pérez-Fournon (IAC and ULL), D. Cano-Morales, I. Correa-Plasencia, A.E. Hernández-Díaz, E. Lekaroz-Urriza, M. Quintana-Ansaldo (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 2026pbn
Discoverer internal name: LSST-AP-DO-170433140870874034
Coordinates (J2000): RA = 16:14:37.048 (243.654367) DEC = -14:20:45.57 (-14.345992)
Discovery date: 2026-05-22 05:34:16.000 (JD=2461182.7321296)

Potential host galaxy: SDSS J161437.16-142045.2

Remarks: Rubin SN candidate discovered using the public LSST alerts, the LSST brokers, and our SGLF filters. LSST light curve available at the LSST brokers, e.g.: https://lasair.lsst.ac.uk/objects/170433140870874034/

Photometry

Discovery (first detection):
Discovery date: 2026-05-22 05:34:16.000
Flux: 21.22 ABMag
Filter: i-LSST
Instrument: LSSTCam
Telescope: Rubin Observatory - Simonyi Survey Telescope

Last non-detection:
Archival info: Other
Remarks: SN candidate close to a catalogued galaxy

Details of the new object can be viewed here: https://www.wis-tns.org/object/2026pbn