TNS Astronomical Transient Report No. 295009 [ 2026TNSTR1181....1P ]
Date Received (UTC): 2026-03-19 02:50:16
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 2026fyn
Discoverer internal name: LSST-AP-DO-170019716309975084
Coordinates (J2000): RA = 09:56:21.328 (149.088867) DEC = +02:57:58.36 (2.966211)
Discovery date: 2026-02-17 05:05:15.000 (JD=2461088.7119792)
Potential host galaxy: DESI LIS 8000348244001654
Remarks: Rubin SN candidate in COSMOS 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/170019716309975084/
Photometry
Discovery (first detection):
Discovery date: 2026-02-17 05:05:15.000
Flux: 24.01 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/2026fyn
Date Received (UTC): 2026-03-19 02:50:16
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 2026fyn
Discoverer internal name: LSST-AP-DO-170019716309975084
Coordinates (J2000): RA = 09:56:21.328 (149.088867) DEC = +02:57:58.36 (2.966211)
Discovery date: 2026-02-17 05:05:15.000 (JD=2461088.7119792)
Potential host galaxy: DESI LIS 8000348244001654
Remarks: Rubin SN candidate in COSMOS 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/170019716309975084/
Photometry
Discovery (first detection):
Discovery date: 2026-02-17 05:05:15.000
Flux: 24.01 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/2026fyn