TNS Astronomical Transient Report No. 294142 [ 2026TNSTR1017....1P ]
Date Received (UTC): 2026-03-11 01:18:02
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 2026fgr
Discoverer internal name: LSST-AP-DO-170019696299475118
Coordinates (J2000): RA = 04:00:36.140 (60.150583) DEC = -48:25:10.72 (-48.419644)
Discovery date: 2026-02-17 02:21:11.000 (JD=2461088.598044)
Potential host galaxy: DES J040036.19-482511.1
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/170019696299475118/
Photometry
Discovery (first detection):
Discovery date: 2026-02-17 02:21:11.000
Flux: 21.49 ABMag
Filter: r-LSST
Instrument: LSSTCam
Telescope: Rubin Observatory - Simonyi Survey Telescope
Last non-detection:
Archival info: Other
Remarks: No catalogued source at this position.
Details of the new object can be viewed here: https://sandbox.wis-tns.org/object/2026fgr
Date Received (UTC): 2026-03-11 01:18:02
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 2026fgr
Discoverer internal name: LSST-AP-DO-170019696299475118
Coordinates (J2000): RA = 04:00:36.140 (60.150583) DEC = -48:25:10.72 (-48.419644)
Discovery date: 2026-02-17 02:21:11.000 (JD=2461088.598044)
Potential host galaxy: DES J040036.19-482511.1
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/170019696299475118/
Photometry
Discovery (first detection):
Discovery date: 2026-02-17 02:21:11.000
Flux: 21.49 ABMag
Filter: r-LSST
Instrument: LSSTCam
Telescope: Rubin Observatory - Simonyi Survey Telescope
Last non-detection:
Archival info: Other
Remarks: No catalogued source at this position.
Details of the new object can be viewed here: https://sandbox.wis-tns.org/object/2026fgr