TNS Astronomical Transient Report No. 299912 [ 2026TNSTR1574....1P ]
Date Received (UTC): 2026-04-13 02:31:01
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: SN 2026jkr
Discoverer internal name: LSST-AP-DO-170230797176406143
Coordinates (J2000): RA = 10:04:17.291 (151.072046) DEC = +03:25:22.86 (3.423017)
Discovery date: 2026-04-06 00:30:00.000 (JD=2461136.5208333)
Potential host galaxy: DESI J151.0721+3.4231
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/170230797176406143/
Photometry
Discovery (first detection):
Discovery date: 2026-04-06 00:30:00.000
Flux: 23.03 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/2026jkr
Date Received (UTC): 2026-04-13 02:31:01
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: SN 2026jkr
Discoverer internal name: LSST-AP-DO-170230797176406143
Coordinates (J2000): RA = 10:04:17.291 (151.072046) DEC = +03:25:22.86 (3.423017)
Discovery date: 2026-04-06 00:30:00.000 (JD=2461136.5208333)
Potential host galaxy: DESI J151.0721+3.4231
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/170230797176406143/
Photometry
Discovery (first detection):
Discovery date: 2026-04-06 00:30:00.000
Flux: 23.03 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/2026jkr