TNS Astronomical Transient Report No. 313037 [ 2026TNSTR2825....1S ]
Date Received (UTC): 2026-07-07 08:09:13
Date made public:
Sender: LVRA
Reporting Group: Lasair Discovery Data Source: Rubin
H. F. Stevance, K. W. Smith, S. J. Smartt (Oxford/QUB), R. D. Williams, G. P. Francis (Edinburgh), D. R. Young (QUB), A. Lawrence, T. M. Sloan (Edinburgh) report/s the discovery of a new astronomical transient.
IAU Designation: AT 2026sei
Discoverer internal name: LSST-AP-DO-170591522452930772
Coordinates (J2000): RA = 21:08:46.558 (317.19399068062) DEC = -21:33:55.38 (-21.565382959665)
Discovery date: 2026-07-07 07:46:12.000 (JD=2461228.82375)
Photometry
Discovery (first detection):
Discovery date: 2026-07-07 07:46:12.000
Flux: 22.0655 ABMag
Filter: i-LSST
Instrument: LSSTCam
Telescope: Rubin Observatory - Simonyi Survey Telescope
Last non-detection:
Archival info: DSS
Details of the new object can be viewed here: https://www.wis-tns.org/object/2026sei
Date Received (UTC): 2026-07-07 08:09:13
Date made public:
Sender: LVRA
Reporting Group: Lasair Discovery Data Source: Rubin
H. F. Stevance, K. W. Smith, S. J. Smartt (Oxford/QUB), R. D. Williams, G. P. Francis (Edinburgh), D. R. Young (QUB), A. Lawrence, T. M. Sloan (Edinburgh) report/s the discovery of a new astronomical transient.
IAU Designation: AT 2026sei
Discoverer internal name: LSST-AP-DO-170591522452930772
Coordinates (J2000): RA = 21:08:46.558 (317.19399068062) DEC = -21:33:55.38 (-21.565382959665)
Discovery date: 2026-07-07 07:46:12.000 (JD=2461228.82375)
Photometry
Discovery (first detection):
Discovery date: 2026-07-07 07:46:12.000
Flux: 22.0655 ABMag
Filter: i-LSST
Instrument: LSSTCam
Telescope: Rubin Observatory - Simonyi Survey Telescope
Last non-detection:
Archival info: DSS
Details of the new object can be viewed here: https://www.wis-tns.org/object/2026sei