TNS Astronomical Transient Report No. 298656 [ 2026TNSTR1434....1P ]
Date Received (UTC): 2026-04-05 11:04:52
Date made public:
Sender: Ismael Perez-Fournon
Reporting Group: SGLF Discovery Data Source: Rubin
I. Pérez-Fournon (IAC and ULL), M. Quintana-Ansaldo, I. Correa-Plasencia, D. Cano-Morales, A.E. Hernández-Díaz, E. Lekaroz-Urriza (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 2026ikn
Discoverer internal name: LSST-AP-DO-170226393328648251
Coordinates (J2000): RA = 09:59:46.483 (149.943679) DEC = +03:46:48.87 (3.780242)
Discovery date: 2026-04-04 23:59:19.000 (JD=2461135.4995255)
Potential host galaxy: SDSS J095946.49+034648.1
Host redshift: 0.29799
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/170226393328648251/
Photometry
Discovery (first detection):
Discovery date: 2026-04-04 23:59:19.000
Flux: 22.15 ABMag
Filter: i-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/2026ikn
Date Received (UTC): 2026-04-05 11:04:52
Date made public:
Sender: Ismael Perez-Fournon
Reporting Group: SGLF Discovery Data Source: Rubin
I. Pérez-Fournon (IAC and ULL), M. Quintana-Ansaldo, I. Correa-Plasencia, D. Cano-Morales, A.E. Hernández-Díaz, E. Lekaroz-Urriza (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 2026ikn
Discoverer internal name: LSST-AP-DO-170226393328648251
Coordinates (J2000): RA = 09:59:46.483 (149.943679) DEC = +03:46:48.87 (3.780242)
Discovery date: 2026-04-04 23:59:19.000 (JD=2461135.4995255)
Potential host galaxy: SDSS J095946.49+034648.1
Host redshift: 0.29799
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/170226393328648251/
Photometry
Discovery (first detection):
Discovery date: 2026-04-04 23:59:19.000
Flux: 22.15 ABMag
Filter: i-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/2026ikn