TNS Astronomical Transient Report No. 293930 [ 2026TNSTR.982....1P ]
Date Received (UTC): 2026-03-09 01:37:55
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 2026fch
Discoverer internal name: LSST-AP-DO-313967766270378010
Coordinates (J2000): RA = 10:03:40.675 (150.919479) DEC = +02:23:35.14 (2.393094)
Discovery date: 2026-01-10 04:04:39.000 (JD=2461050.6698958)
Potential host galaxy: SDSS J100340.80+022334.9
Host redshift: 0.5572
Remarks: Rubin SN candidate in the COSMOS DDF field 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/313967766270378010/
Photometry
Discovery (first detection):
Discovery date: 2026-01-10 04:04:39.000
Flux: 23.6 ABMag
Filter: r-LSST
Instrument: LSSTCam
Telescope: Rubin Observatory - Simonyi Survey Telescope
Last non-detection:
Archival info: SDSS
Details of the new object can be viewed here: https://www.wis-tns.org/object/2026fch
Date Received (UTC): 2026-03-09 01:37:55
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 2026fch
Discoverer internal name: LSST-AP-DO-313967766270378010
Coordinates (J2000): RA = 10:03:40.675 (150.919479) DEC = +02:23:35.14 (2.393094)
Discovery date: 2026-01-10 04:04:39.000 (JD=2461050.6698958)
Potential host galaxy: SDSS J100340.80+022334.9
Host redshift: 0.5572
Remarks: Rubin SN candidate in the COSMOS DDF field 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/313967766270378010/
Photometry
Discovery (first detection):
Discovery date: 2026-01-10 04:04:39.000
Flux: 23.6 ABMag
Filter: r-LSST
Instrument: LSSTCam
Telescope: Rubin Observatory - Simonyi Survey Telescope
Last non-detection:
Archival info: SDSS
Details of the new object can be viewed here: https://www.wis-tns.org/object/2026fch