TNS Astronomical Transient Report No. 304318 [ 2026TNSTR2161....1P ]
Date Received (UTC): 2026-05-18 13:59:48
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 2026mza
Discoverer internal name: LSST-AP-DO-170411112000913487
Coordinates (J2000): RA = 10:04:39.248 (151.163533) DEC = +02:30:26.81 (2.507447)
Discovery date: 2026-05-16 23:41:03.000 (JD=2461177.4868403)
Potential host galaxy: SDSS J100439.08+023025.9
Host redshift: 0.12252
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/170411112000913487/
Photometry
Discovery (first detection):
Discovery date: 2026-05-16 23:41:03.000
Flux: 22.37 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://sandbox.wis-tns.org/object/2026mza
Date Received (UTC): 2026-05-18 13:59:48
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 2026mza
Discoverer internal name: LSST-AP-DO-170411112000913487
Coordinates (J2000): RA = 10:04:39.248 (151.163533) DEC = +02:30:26.81 (2.507447)
Discovery date: 2026-05-16 23:41:03.000 (JD=2461177.4868403)
Potential host galaxy: SDSS J100439.08+023025.9
Host redshift: 0.12252
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/170411112000913487/
Photometry
Discovery (first detection):
Discovery date: 2026-05-16 23:41:03.000
Flux: 22.37 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://sandbox.wis-tns.org/object/2026mza