TNS Astronomical Transient Report No. 302424 [ 2026TNSTR1944....1P ]
Date Received (UTC): 2026-05-05 23:05:04
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: AT 2026llp
Discoverer internal name: LSST-AP-DO-170050503194443852
Coordinates (J2000): RA = 10:00:13.680 (150.057) DEC = +03:40:20.55 (3.672375)
Discovery date: 2026-02-24 03:54:05.000 (JD=2461095.6625579)
Potential host galaxy: SDSS J100013.69+034020.8
Host redshift: 0.62694
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/170050503194443852/
Photometry
Discovery (first detection):
Discovery date: 2026-02-24 03:54:05.000
Flux: 24.21 ABMag
Filter: r-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/2026llp
Date Received (UTC): 2026-05-05 23:05:04
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: AT 2026llp
Discoverer internal name: LSST-AP-DO-170050503194443852
Coordinates (J2000): RA = 10:00:13.680 (150.057) DEC = +03:40:20.55 (3.672375)
Discovery date: 2026-02-24 03:54:05.000 (JD=2461095.6625579)
Potential host galaxy: SDSS J100013.69+034020.8
Host redshift: 0.62694
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/170050503194443852/
Photometry
Discovery (first detection):
Discovery date: 2026-02-24 03:54:05.000
Flux: 24.21 ABMag
Filter: r-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/2026llp