TNS Astronomical Transient Report No. 300897 [ 2026TNSTR1753....1P ]
Date Received (UTC): 2026-04-21 17:37:25
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 2026kgu
Discoverer internal name: LSST-AP-DO-313972153444204567
Coordinates (J2000): RA = 04:07:49.305 (61.955438) DEC = -49:16:52.86 (-49.28135)
Discovery date: 2026-01-11 01:52:38.000 (JD=2461051.5782176)
Potential host galaxy: DES J040749.26-491652.4
Remarks: Rubin SN candidate in EDFS 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/313972153444204567/
Photometry
Discovery (first detection):
Discovery date: 2026-01-11 01:52:38.000
Flux: 23.7 ABMag
Filter: g-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/2026kgu
Date Received (UTC): 2026-04-21 17:37:25
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 2026kgu
Discoverer internal name: LSST-AP-DO-313972153444204567
Coordinates (J2000): RA = 04:07:49.305 (61.955438) DEC = -49:16:52.86 (-49.28135)
Discovery date: 2026-01-11 01:52:38.000 (JD=2461051.5782176)
Potential host galaxy: DES J040749.26-491652.4
Remarks: Rubin SN candidate in EDFS 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/313972153444204567/
Photometry
Discovery (first detection):
Discovery date: 2026-01-11 01:52:38.000
Flux: 23.7 ABMag
Filter: g-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/2026kgu