TNS Astronomical Transient Report No. 313380 [ 2026TNSTR2820....1F ]
Date Received (UTC): 2026-07-07 20:06:30
Date made public:
Sender: ALeRCE
Reporting Group: ALeRCE Discovery Data Source: Rubin
F. Forster, F.E. Bauer, G. Pignata, A. Munoz-Arancibia, S. Jurado, A. Mourao, A. Alvarez, F. Andrades, A. Bayo, G. Cabrera-Vives, M. Catelan, P.A. Estevez, S. Eyheramendy, B. Galindo, L. Hernandez-Garcia, H. Larranaga, K. Medina, D. Moreno-Cartagena, E. Munoz, I. Reyes, P. Sanchez-Saez, D. Rodriguez-Mancini, on behalf of the ALeRCE broker report/s the discovery of a new astronomical transient.
IAU Designation: AT 2026sqd
Discoverer internal name: LSST-AP-DO-170635504173711589
Coordinates (J2000): RA = 20:26:11.475 (306.54781403684) DEC = -21:05:59.62 (-21.099893843532)
Discovery date: 2026-07-07 07:57:26.726 (JD=2461228.8315593)
Potential host galaxy: WISEA J202611.42-210558.5
Remarks: SN candidate classified using ALeRCE's stamp classifier and the public Rubin/LSST stream. Discovery image and light curve in https://lsst.alerce.online/object/170635504173711589?survey=lsst
Photometry
Discovery (first detection):
Discovery date: 2026-07-07 07:57:26.726
Flux: 20.2909 ABMag
Filter: i-LSST
Instrument: LSSTCam
Telescope: Rubin Observatory - Simonyi Survey Telescope
Remarks: Data provided by Rubin/LSST
Last non-detection:
Archival info: Other
Remarks: LSST non-detection limits not available
Details of the new object can be viewed here: https://www.wis-tns.org/object/2026sqd
Date Received (UTC): 2026-07-07 20:06:30
Date made public:
Sender: ALeRCE
Reporting Group: ALeRCE Discovery Data Source: Rubin
F. Forster, F.E. Bauer, G. Pignata, A. Munoz-Arancibia, S. Jurado, A. Mourao, A. Alvarez, F. Andrades, A. Bayo, G. Cabrera-Vives, M. Catelan, P.A. Estevez, S. Eyheramendy, B. Galindo, L. Hernandez-Garcia, H. Larranaga, K. Medina, D. Moreno-Cartagena, E. Munoz, I. Reyes, P. Sanchez-Saez, D. Rodriguez-Mancini, on behalf of the ALeRCE broker report/s the discovery of a new astronomical transient.
IAU Designation: AT 2026sqd
Discoverer internal name: LSST-AP-DO-170635504173711589
Coordinates (J2000): RA = 20:26:11.475 (306.54781403684) DEC = -21:05:59.62 (-21.099893843532)
Discovery date: 2026-07-07 07:57:26.726 (JD=2461228.8315593)
Potential host galaxy: WISEA J202611.42-210558.5
Remarks: SN candidate classified using ALeRCE's stamp classifier and the public Rubin/LSST stream. Discovery image and light curve in https://lsst.alerce.online/object/170635504173711589?survey=lsst
Photometry
Discovery (first detection):
Discovery date: 2026-07-07 07:57:26.726
Flux: 20.2909 ABMag
Filter: i-LSST
Instrument: LSSTCam
Telescope: Rubin Observatory - Simonyi Survey Telescope
Remarks: Data provided by Rubin/LSST
Last non-detection:
Archival info: Other
Remarks: LSST non-detection limits not available
Details of the new object can be viewed here: https://www.wis-tns.org/object/2026sqd